CCLME.ORG - DIVISION 1. HOUSING AND COMMUNITY DEVELOPMENT

(continued)
280.806. Receptacle Outlets.
(a) All receptacle outlets shall be:
(1) Of grounding type:
(2) Installed according to Section 210-7 of the National Electrical Code (NFPA No. 70-1975) and

(3) Except when supplying specific appliances, be parallel-blade, 15-amperes, 125-volt, either single or duplex.
(b) All 120 volt single phase, 15 and 20 amperes receptacle outlets, including receptacles in light fixtures, installed outdoors and in bathrooms shall have ground-fault circuit protection for personnel. Feeders supplying branch circuits may be protected by a ground-fault circuit interrupter in lieu of the provision for such interrupters specified above.
(c) There shall be an outlet of the grounding type for each cord-connected fixed appliance installed.
(d) Receptacle outlets required. Except in the bath and hall areas, receptacle outlets shall be installed at wall spaces 2 feet wide or more, so that no point along the floor line is more than 6 feet, measured horizontally, from an outlet in that space. In addition, a receptacle outlet shall be installed:
(1) Over or adjacent to counter tops in the kitchen (at least one on each side of the sink if counter tops are on each side and 12 inches or over in width).

(2) Adjacent to the refrigerator and free-standing gas-range space.
(3) At counter top spaces for built-in vanities.
(4) At counter top spaces under wall-mounted cabinets.
(5) In the wall, at the nearest point where a bar type counter attaches to the wall.
(6) In the wall at the nearest point where a fixed room divider attaches to the wall.
(7) In the laundry area.
(8) At least one receptacle outlet shall be installed outdoors. Receptacle outlets located in compartments accessible from outdoors shall be considered outdoor receptacles and shall be protected as required in 280.806(b).
(9) Adjacent to bathroom basins or integral with the light fixture over the bathroom basin.

(10) Receptacle outlets are not required in the following locations: (i) wall space occupied by built-in kitchen or wardrobe cabinets, (ii) wall space behind doors which may be opened fully against a wall surface, (iii) room dividers of the lattice type, less than 8 feet long, not solid within 6 inches of the floor, (iv) wall space afforded by bar type counters.
(e) Receptacle outlets shall not be installed in or within reach (30 inches) of a shower or bathtib space.
(f) Receptacle outlets shall not be installed above electric baseboard heaters.
280.807. Fixtures and Appliances.
(a) Electrical materials, devices, appliances, fittings, and other equipment installed, intended for use, in, or attached to the mobile home shall be approved for the application shall shall be connected in an approved manner when in service. Facilities shall be provided to securely fasten appliances when the mobile home is in transit. (See 280.809.)
(b) Specifically listed pendant-type fixtures or pendant cords shall be permitted in mobile homes.

(c) If a lighting fixture is provided over a bathrub or in a shower stall, it shall be of the enclosed and gasketed type, listed for wet locations.
(d) The switch for shower lighting fixtures and exhaust fans located over a tub or in a shower stall shall be located outside the tub shower space. (See 280.806(e))
(e) Any combustible wall or ceiling finish exposed between the edge of a fixture, canopy, or pan and an outlet box shall be covered with noncombustible material.
(f) Every appliance shall be accessible for inspection, service, repair, or replacement without removal of permanent construction.
280.808. Wiring Methods and Materials.
(a) Except as specifically limited in this Part, the wiring methods and materials specified in the National Electrical Code (NFPA No. 70-1975) shall be used in mobile homes.

(b) Nonmetallic outlet boxes shall be acceptable only with nonmetallic cable.
(c) Nonmetallic cable located 15 inches or less above the floor, if exposed, shall be protected from physical damage by covering boards, guard strips, or conduit. Cable likely to be damaged by stowage shall be so protected in all cases.
(d) Nonmetallic sheathed cable shall be secured by staples, straps, or similar fittings so designed and installed as not to injury any cable. Cable shall be secured in place at intervals not exceeding 4-1/2 feet and within 12 inches from every cabinet, box or fitting.
(e) Metal-clad and nonmetallic cables shall be permitted to pass through the centers of the wide side of 2-inch by 4-inch studs. However, they shall be protected where they pass through 2-inch by 2-inch studs or at other studs or frames where the cable or armor would be less than 1-1/2 inches from the inside or outside surface of the studs when the wall covering materials are in contact with the studs. Steel plates on each side of the cable, or a tube, with not less than No. 16 MSG wall thickness shall be required to protect the cable. These plates or tubes shall be securely held in place.

(f) Where metallic faceplates are used they shall be effectively grounded.
(g) If the range, clothes dryer, or similar appliance is connected by metal-clad cable of flexible conduit, a length of not less than three feet or free cable or conduit shall be provided to permit moving the appliance. Type NM or Type SE cable shall not be used to connect a range ore a dryer. This shall not prohibit the use of Type NM or Type SE cable between the branch circuit overcurrent protective device and a junction box or range or dryer receptacle.
(h) Threaded rigid metal conduit shall be provided with a locknut inside and outside the box, and a conduit bushing shall be used on the inside. Rigid nonmetallic conduit shall be permitted. Inside ends of the conduit shall be reamed.
(i) Switches shall be rated as follows:
(1) For lighting conduits, switches shall have a 10-ampere, 120-125 volt rating; or higher if needed for the connected load.
(2) For motors or other loads, switches have ampere or horsepower ratings, or both, adequate for loads controlled. (An 'AC general-use' snap switch shall be permitted to control a motor 2 horsepower or less with full-load current not over 80 percent of the switch ampere rating).
(j) At least 4 inches of free conductor shall be left at each outlet box except where conductors are intended to loop without joints.
(k) When outdoor or under-chassis line-voltage wiring is exposed to moisture or physical damage, it shall be protected by rigid metal conduit. The conductors shall be suitable for wet locations. Electrical metallic tubing may be used when closely routed against frames and equipment enclosures.
(l) The cables or conductors shall be Type NMC, TW, or equivalent.
(m) Outlet boxes of dimensions less than those required in Table 370-6(a) of the National Electrical Code (NFPA No. 70-1975), shall be permitted provided the box has been tested and approved for the purpose.
(n) Boxes, fittings and cabinets shall be securely fastened in place, and shall be supported from a structural member of the home, either directly or by using a substantial race. Snap-in type boxes provided with special wall or ceiling brackets that securely fasten boxes in walls or ceilings shall be permitted.

(o) Outlet boxes shall fit closely to openings in combustible walls and ceilings, and they shall be flush with such surfaces.
(p) Appliances having branch-circuit terminal connections which operate at temperatures higher than 60° C (140° F) shall have circuit conductors as described in paragraph (p)(1) and (2) of this section:
(1) Branch-circuit conductors having an insulation suitable for the temperature encountered shall be permitted to run directly to the appliance.
(2) Conductors having an insulation suitable for the temperature encountered shall be run from the appliance terminal connections to a readily accessible outlet box placed at least one foot from the appliance. These conductors shall be in a suitable raceway which shall extend for at least 4 feet.
280.809. Grounding.
(a) General. Grounding of both electrical and nonelectrical metal parts in a mobile home shall be through connection to a grounding bus in the mobile home distribution panelboard. The grounding bus shall be grounded through the green-colored conductor in the supply cord or the feeder wiring to the service ground in the service-entrance equipment located adjacent to the mobile home location. Neither the frame of the mobilehome nor the frame of any appliance shall be connected to the neutral conductor in the mobile home.
(b) Insulated neutral.
(1) The grounded circuit conductor (neutral) shall be insulated from the grounding conductors and from equipment enclosures and other grounded parts. The grounded (neutral) circuit terminals in the distribution panelboard and in ranges, clothes dryers, counter-mounted cooking units, and wall-mounted ovens shall be insulated from the equipment enclosure. Bending screws, straps, or buses in the distribution panelboard or in appliance shall be removed and discarded.
(2) Connection of ranges and clothes dryers with 115/230-volt, 3-wire ratings shall be made with 4-conductor cord and 3-pole, 4-wire grounding type plugs, or by Type AC metal-clad cable or conductors enclosed in flexible metal conduit. For 115-volt rated devices, a 3-conductor cord and a 2-pole, 3-wire grounding-type plug shall be permitted.

(c) Equipment grounding means.
(1) The green-colored grounding wire in the supply cord or permanent feeder wiring shall be connected to the grounding bus in the distribution panelboard or disconnecting means.
(2) In the electrical system, all exposed metal parts, enclosures, frames, lamp fixture caopies, etc., shall be effectively bonded to the grounding terminal or enclosure of the distribution panelboard.
(3) Cord-connected appliances, such as washing maachines, clothes dryers, refrigerators, and the electrical system of gas ranges, etc., shall be grounded by means of an approved cord with grounding conductor and grounding-type attachment plug.
(d) Bonding of noncurrent-carrying metal parts.
(1) All exposed noncurrent carrying metal parts that may become energized shall be effectively bonded to the grounding terminal or enclosure of the distribution panelboard. A bonding conductor shall be connected between each distribution panelboard and an accessible terminal on the chassis.

(2) Grounding terminals shall be of the solderless type and approved as pressure-terminal connectors recognized for the wire size used. Star washers or other approved paint-penetrating fitting shall be used to bond terminals to chassis or other coated areas. The bonding conductor shall be solid or stranded, insulated or bare, and shall be No. 8 copper minimum or equal. The bonding conductor shall be routed so as not to be exposed to physical damage. Protection can be afforded by the configuration of the chassis.
(3) Metallic gas, water and waste pipes and metallic air-circulating ducts shall be considered bonded if they are connected to the terminal on the chassis (see 280.809) by clamps, solderless connectors, or by suitable grounding-type straps.
(4) Any metallic roof and exterior covering shall be considered bonded if (i) the metal panels overlap one another and are securely attached to the wood or metal frame parts by metallic fasteners, and (ii) if the lower panel of the metallic exterior covering is secured by metallic fasteners at a cross member of the chassis by two metal straps per mobile home unit or section at opposite ends. The bonding strap material shall be a minimum of 4 inches in width of material equivalent to the skin or a material of equal or better electrical conductivity. The straps shall be fastened with paint-penetrating fittings (such as screws and star washers or equivalent).
280.810. Electrical Testing.
(a) Dialetric Strength Test. The wiring of each mobile home shall be subjected to a 1-minute, 900-volt dieletric strength test (with all switches closed) between live parts (including neutral) and the mobile home ground. Alternatively, the test may be performed at 1,080 volts for 1 second. This test shall be performed after branch circuits are complete and after fixtures or appliances are installed. Fixtures or appliances which are listed shall not be required to withstand the dielectric strength test.
(b) Each mobile home shall be subjected to: (1) A continuity test to assure that metallic parts are properly bonded. (2) Operational test to demonstrate that all equipment is connected and in working order and (3) Polarity checks to determine that connection have been properly made.
280.811. Calculations.
(a) The following method shall be employed in computing the supply-cord and distribution-panelboard load for each feeder assembly for each mobile home and shall be based on a 3-wire, 115/230-volt supply with 115-volt loads balanced between the two legs of the 3-wire system. The total load for determining power supply by this method is the summation of:
(1) Lighting and small appliance land as calculated below:
(i) Lighting Watts: Length times width of mobile home (outside dimensions exclusive of coupler) times 3 watts per square foot; e.g. Length x width x 3 = lighting watts.
(ii) Small Appliance Watts: Number of circuits times 1,500 watts for each 20- ampere appliance receptacle circuit (See definition of 'Appliance Portable' with note): e.g. Number of circuits x 1,500 = small appliance watts.
(iii) Total Watts: Lighting watts plus small appliance = total watts.
(iv) First 3,000 total watts at 100 percent plus remainder at 35 percent=watts to be divided by 230 volts to obtain current (amperes) per leg.
(2) Nameplate amperes for motion and heater loads (exhaust fans, air conditioners, electric, gas, or oil heating). Omit smaller of air conditioning and heating except include blower motor if used as air conditioner evaporator motor. When an air conditioner is not installed and a 40-ampere power supply cord is provided, allow 15 amperes per leg for air conditioning.
(3) 25 percent of current of largest motor in (2).
(4) Total of nameplate amperes for: Disposal, dishwasher, water heater, clothes dryer, wall-mounted oven, cooking units. Where number of these apliances exceeds three, use 75 percent of total.
(5) Derive amperes for free-standing range (as distinguished from separate ovens and cooking units) by dividing values below by 230 volts.

Name plate rating
(in watts) Use (in watts)
10,000 or less 80 percent of rating
10,001 to 12,500 8,000
12,501 to 13,500 8,400
13,501 to 14,500 8,800

14,501 to 15,500 9,200
15,501 to 16,500 9,600
16,501 to 17,500 10,000

(6) If outlets or circuits are provided for other than factory-installed appliances include the anticipated load. The following example is given to illustrate the application of this Method of Calculation:
Example: A mobile home is 70 x 100 feet and has two portable appliance circuits, a 100 watts 230 volt heater, a 200 watt 115 volt exhaust fan, a 400 watt 115 volt dishwasher and a 7000 watt electric range.

Lighting and small appliance load: Watts
Lighting 70 x 10 x 3 2,100
Small appliance 1,500 x 2 3,000
_____
Total 5,100
_____

1st 3,000 W at 100 pct 3,000
_____
Remainder (5,100 - 3,000 = 2,100) at
35 pct 735
Total 3,735

3,735
------ = 16 A per leg
230
1,000 W (heater) 230 = 4.4 A.
200 W (fan) 115 = 1.7 A.
400 W (dishwasher) 115 = 3.5 A.
7,000 W (range) x 0.8 230 = 24.0 A.
_______________________________________________________________

Amperes
per leg
A B
Lighting and Appliances 16 16
Heater (230V) 4 4
Fan (115V) 2 -
Dishwasher (115V) - 4
Range 24 24
____ ____
Totals 46 48

Note: Based on the higher current calculated for either leg, use on 50-A supply cord.
(b) The following is an optional method of calculation for lighting and appliance loads for mobile homes served by a single 3-wire 115/230 volt set of feeder conductors with an ampacity of 100 or greater. The total load for determining the feeder ampacity may be computed in accordance with the following Table instead of the method previously specified. Feeder conductors whose demand load is determined by this optional calculation shall be permitted to have the neutral load determined by Section 220-22 of the National Electrical Code. The loads identified in the Table as 'otherload' and as 'Remainder of other load' shall include the following:
(1) 1500 watts for each 2-wire, 20-ampere small appliance branch circuit and each laundry branch circuit specified.
(2) 3 watts per square foot for general lighting and general-use receptacles.
(3) The nameplate rating of all fixed appliances, ranges, wall-mounted ovens, counter-mounted cooking units, and including 4 or more separately controlled space heating loads.
(4) The nameplate ampere or kVA rating of all motors and of all low-power-factor loads.
(5) The largest of the following: (i) air conditioning load; (ii) the 65 percent diversified demand of the central electric space heating load; (iii) the 65 percent diversified demand of the load of less than four separately-controlled electric-space heating units; (iv) the connected load of four or more separately-controlled electric space heating units.

OPTIONAL CALCULATION FOR MOBILE HOMES WITH
100-AMPERE OR LARGER SERVICE.
Load (in kilowatt or Demand factor
kilovoltampere) (percent)
Air conditioning and cooling included
heat pump compressors 100
Central electric space heating 65
Less than 4 separately controlled
electric space heating units 65
1st 10 kW of all other load 100
Remainder of other load 40

280.812. Wiring of Expandable Units and Dual Units.
(a) Expandable or dual unit mobile homes shall use fixed-type wiring methods and materials for connecting such units to each other.
(b) Expandable or multiple unit mobile homes not having permanently installed feeders and which are to be moved from one location to another, shall be permitted to have disconnecting means with branch circuit protective equipment in each unit when so located that after assembly or joining together of units the requirements of 280.803 will be met.
280.813. Outdoor Outlets, Fixtures, Air-Conditioning Equipment, etc.
(a) Outdoor fixtures and equipment shall be listed or approved for outdoor use. Outdoor receptacles or convenience outlets shall be of a gasket-cover type.
(b) A mobile home provided with an outlet designed to energize heating and/or air conditioning equipment located outside the mobile home, shall have permanently affixed, adjacent to the outlet, a metal tag which reads:
This Connection Is for Air Conditioning Equipment Rated at Not More Than _____ Amperres, at _______ Volts, 60 Hertz. A disconnect shall be located within sight of the appliance.

The correct voltage and ampere ratings shall be given. The tag shall be not less than 0.020 inch, etched brass, stainless steel, anodized or alclad aluminum or equivalent. The tag shall be not less than 3 inches or 1-3/4 inches minimum size.
280.814. Painting of Wiring.
During painting or staining of the mobile home, it shall be permitted to paint metal raceways (except where grounding continuity would be reduced) or the sheath of the nonmetallic cable. Some arrangement, however, shall be made so that no paint shall be applied to the individual wires, as the color coding may be obliterated by the paint.
280.815. Polarization.
(a) The identified (white) conductor shall be employed for grounding circuit conductors only and shall be connected to the identified (white) terminal or lead on receptacle outlets and fixtures. It shall be the unswitched wire in switched circuits, except that a cable containing an identified conductor (white) shall be permitted for single-pole three-way or four-way switch loops where the connections are made so that the unidentified conductor is the return conductor from the switch to the outlet. Painting of the terminal end of the wire shall not be required.
(b) If the identified (white) conductor of a cable is used for other than grounded conductors or for other than switch loops as explained above (for a 230-volt circuit, for example), the conductor shall be finished in a color other than white at each outlet where the conductors are visible and accessible.
(c) Green-colored wires or green with yellow stripe shall be used for grounding conductors only.
280.816. Examination of Equipment for Safety.
The examination or inspection of equipment for safety, according to this standard, shall be conducted under uniform conditions and by organization properly equipped and qualified for experimental testing, inspections of the run of goods at factories, and service-value determinations through field examinations.
Subpart J. Transportation

280.901. Scope.
Subpart J of this Standard covers the general requirement for designating the structure of the mobile home to fully withstand the adverse effects of transportation shock and vibration without degradation of the integrated structure or of its component parts and the specific requirements pertaining to the transportation system and its relationship to the structure.
280.902. Definitions.
(a) 'Chassis' means the entire transportation system composing the following sybsystems: drawbar and coupling mechanism, frame, running gear assembly, and lights.
(b) 'Drawbar and Coupling Mechanism' means the rigid assembly, (usually an 'A' frame) upon which is mounted a coupling mechanism, which connects the mobile home's frame to the towing vehicle.
(c) 'Frame' means the fabricated rigid substructure which provides considerable support to the affixed mobile home structure both during transport and on-site; and also provides a platform for securement of the running gear assembly, the drawbar and coupling mechanism.
(d) 'Running Gear Assembly' means the subsystem consisting of suspension springs, axles, bearings, wheels, hubs, tires, and brakes, with their related hardware.
(e) 'Lights' means those safety lights and associated wiring required by applicable U.S. Department of Transportation regulations.
(f) 'Transportation System.' (Same as Chassis, above).
(g) 'Highway,' includes all roads and streets to be legally used in transporting the mobile home.
(h) 'Length' for purposes of transportation only, means the distance from the extreme front of the mobile home to the extremes rear, including the drawbar and coupling mechanism, but not including expandable features that do not project from the body during transportation.
280.903. General Requirements for Designing the Structure to Withstand Transportation Shock and Vibration.
(a) The cumulative effect of highway transportation shock and vibration upon a mobile home structure may result in incremental degradation of its designed performance in terms of providing a safe healthy, and durable dwelling. Therefore, the mobile home shall be designed, in terms of its structural, plumbing mechanical and electrical systems, to fully withstand such transportation forces during its intended life. (See 280.303(c) and 280.305(a))
(b) Particular attention shall be given to maintaining watertight integrity and conserving energy by assuring that structural components in the roof and walls (and their interferences with vents, windows, doors, etc.) are capable of resisting highway shock and vibration forces during primary and subsequent secondary transportation moves.
(c) In place of an engineering analysis, either of the following may be accepted: (i) Documented technical data of suitable highway tests which were conducted to simulate transportation loads and conditions: or (2) acceptable documented evidence of actual transportation experience which meets the intent of this subpart.
280.904. Specific Requirements for Designing the Transportation System.
(a) General. The entire system (frame, drawbar and coupling mechanism, running gear assembly, and lights) shall be designed and constructed as an integrated, balanced and durable unit which is safe and suitable for its specified use during the intended life of the mobile home. In operation, the transportation system (supporting the mobile home structure and its contents) shall effectively respond to the control of the towing vehicle in terms of tracking and braking, while traveling at applicable highway speeds and in normal highway traffic conditions.
(Note: While the majority of mobile homes utilize a fabricated steel frame assembly, upon which the mobile home structure is constructed, it is not the intent of this standard to limit innovation. Therefore, other concepts, such as integrating the frame function into the mobile home structure, are acceptable provided that such design meets the intent and requirements of this part).
(b) Specific requirements.
(1) Drawbar. The drawbar shall be constructed of sufficient strength, rigidity and durability to safely withstand those dynamic forces experienced during highway transportation. It shall be securely fastened to the mobile home frame by either a continuous weld or by bolting.
(2) Coupling mechanism. The coupling mechanism (which is usually of the socket type) shall be securely fastened to the drawbar in such a manner as to assure safe and effective transfer of the maximum loads, including dynamic loads, between the mobile home structure and the hitch-assembly by the towing vehicle. The coupling shall be equipped with a manually operated mechanism so adapted as to prevent disengagement of the unit while in operation. The coupling shall be so designed that it can be disconnected regardless of the angle of the mobile home to the towing vehicle. With the mobile home parked on level ground, the center of the socket of the coupler shall not be less than 20 inches nor more than 26 inches from ground level.
(3) Chassis. The chassis, in conjection with the mobile home structure, shall be designed and constructed to effectively sustain the designed loads consisting of the dead load plus a minimum of 3 pounds per square foot floor load, (example: free-standing range, refrigerator, and loose furniture) and the superimposed dynamic load resulting from highway movement but shall not be required to exceed twice the dead load. The integrated design shall be capable of insuring rigidity and structural integrity of the complete mobile home structure and to insure against deformation of structural or finish members during the intended life of the home.
(4) Running gear assembly.
(i) The running gear assembly, as part of the chassis, shall be designed to perform, as a balanced system, in order to effectively sustain the designed loads set forth in 280.904(b)(3) and to provide for durable dependable safe mobility of the mobile home. It shall be designed to accept shock and vibration, both from the highway and the towing vehicle and effectively dampen these forces so as to protect the mobile home structure from damage and fatigue. Its components shall be designed to facilitate routine maintenance, inspection and replacement.
(ii) Location of the running gear assembly shall be determined by documented engineering analysis, taking into account the gross weight (including all contents), total length of the mobile home, the necessary coupling hitch weight, span distance, and turning radius. The coupling weight shall be not less than 12 percent nor more than 25 percent of the gross weight.
(5) Spring assemblies. Spring assemblies (springs, hangers, shackles, bushings and mounting bolts) shall be capable of withstanding all of the design loads as outlined in 280.904(b)(3) without exceeding maximum allowable stresses for design spring assembly life as recommended by the spring assembly manufacturer. The capacity of the spring system shall assure, that under maximum operating load conditions, sufficient clearance shall be maintained between the tire and mobile home frame or structure to permit unimpeded wheel movement and for changing tires.
(6) Axles. Axles, and their connecting hardware, shall be capable of withstanding all of the design loads outlined in 280.904(b)(3) without exceeding maximum allowable stresses for design axle life as recommended by the axle manufacturer. The number of axles required to provide a safe tow and good ride characteristics shall be determined and documented by engineering analysis. Those alternatives listed in 280.903(c) may be accepted in place of such an analysis.
(7) Hubs and bearings. Hubs and bearings shall meet the requirements of 280.904(b)(3) and good engineering practice. Both of these components shall be accessible for inspection, routine maintenance and replacement of parts.
(8) Tires, wheels, and rims. Tires, wheels and rims shall meet the requirements of 280.9094(b)(3). Tires shall be selected for anticipated usage.
(9) Brake assemblies.
(i) The number, type, size and design of brake assemblies required to assist the towing vehicle in providing effective control and stopping of the mobile home shall be determined and documented by engineering analysis. These alternatives listed in 280.90(c) may be accepted in place of such an analysis.
(ii) Brakes on the towing vehicle and the mobile home shall be capable of assuring that the maximum stopping distance from an initial velocity of 20 miles per hour does not exceed 40 feet (U.S. Department of Transportation Regulations).
(1) Lights and associated wiring. Highway safety electrical lights and associated wiring shall conform to applicable federal requirements in terms of location and performance. The manufacturer shall have the option of meeting this requirement by utilizing a temporary light/wiring harness provided by the mobile home transportation carrier.

Note: Authority cited: Section 18020, Health and Safety Code. Reference: Sections 18055, 18055.5. Health and Safety Code.

s 4300. Application of Design and InstallationRequirements; Preemption of Local Designand Installation Requirements.
(a) The requirements of this article apply to the design and installationof a fire sprinkler system -
(1) in a new or used manufactured home that is used or intended foruse as a dwelling, and

(2) in new or used multi-unit manufactured housing with two dwellingunits.
(b) The requirements of this article preempt all other requirements, including those of any ordinance or rule adopted by any city, county, cityand county, or special district, as well as a fire district, that establish standards for the design and installation of a fire sprinkler system -
(1) in a new or used manufactured home that is used or intended foruse as a dwelling, and
(2) in new or used multi-unit manufactured housing with two dwellingunits.
(c) These regulations do not require the installation of a fire sprinklersystem in a manufactured home or in multi-unit manufactured housingwith two dwelling units.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029.5 and 18030.5, Health andSafety Code.

s 4302. Adoption by Reference of the Provisions of NFPA13D, "Standard for the Installation of SprinklerSystems in One- and Two- Family Dwellingsand Manufactured Homes."
(a) The design and installation of a fire sprinkler system must comply -
(1) with the requirements of NFPA 13D, "Standard for the Installationof Sprinkler Systems in One- and Two- Family Dwellings and Manufactured Homes," 1999 edition, as published by the National Fire ProtectionAssociation; hereby incorporated by reference; and amended by subsection (c), and
(2) with the provisions of Title 25, California Code of Regulations,sections 4300, 4302, 4304, 4306, 4308, 4310, 4312, 4314, 4316, 4318,4320, 4322, and 4324.
(b) References to the nationally recognized standard incorporated atsubsection (a) will appear throughout Article 2.5 as NFPA 13D.
(c) The following provisions of NFPA 13D are not adopted:
(1) the "exception" provided at section 1-5.2,
(2) subsection (d) of section 2-3,
(3) section A-1.3. Approved.,
(4) section A-1.3. Authority Having Jurisdiction. and
(5) section A-1.3. Listed.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code.

s 4304. Definitions.
(a) The definitions contained in section 4004 and the definitions contained in chapter 1 of NFPA 13D apply to sections 4300 through 4324,with the exception of those definitions listed in subsection (b).
(b) The following definitions contained in chapter 1 of NFPA 13D aresuperseded by the provisions of 18001, 18003.3, 18007, and 18015 of theHealth and Safety Code and subsections ( l ), (w), and (y) of section 4004and do not apply to sections 4300 through 4324:
(1) Approved.
(2) Authority Having Jurisdiction
(3) Dwelling.
(4) Dwelling Unit.
(5) Labeled.
(6) Listed.
(7) Manufactured Home.
(8) Shall.
(9) Sprinkler System.
(10) Standard.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18001, 18003.3, 18007, 18015, 18025, 18029,18029.5 and 18030.5, Health and Safety Code.

s 4306. Restrictions on the Sale of a SprinkleredManufactured Home or of SprinkleredMulti-unit Manufactured Housing with TwoDwelling Units.
It is unlawful for any person to sell, offer for sale, rent, or lease withinthis state any manufactured home or multi-unit manufactured housingwith two dwelling units, if a fire sprinkler system already installed or intended to be installed in the manufactured home or in multi-unitmanufactured housing with two dwelling units will not operate properlygiven the water pressure available at the proposed installation site.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18035, 18035.2, 18046 18046.1 and 18060.5,Health and Safety Code.

s 4308. Requirements for the Approval of the Plans for aFire Sprinkler System Requirements for theInspection of the Installation of a Fire SprinklerSystem.
(a) The following requirements apply to the installation of a fire sprinkler system during the manufacture of a manufactured home or of multi-unit manufactured housing with two dwelling units:
(1) A Design Approval Agency must review and approve the plans forthe fire sprinkler system, including the residential sprinkler installationinstructions, before the fire sprinkler system is installed.
(2) A Quality Assurance Agency must inspect and approve the installation of the fire sprinkler system.
(A) The manufacturer must make the approved plans available to theQuality Assurance Agency at the manufacturing site prior to andthroughout the installation of the fire sprinkler system.
(B) The Quality Assurance Agency must inspect the installation of thefire sprinkler system during the manufacturing process. The inspectionmust occur prior to the point in the manufacturing process when any portion of the fire sprinkler system is concealed by wall or ceiling materials.
(b) The following requirements apply to the installation of a fire sprinkler system after the manufactured home or the multi-unit manufacturedhousing with two dwelling units is shipped from the manufacturing facility:
(1) The department must approve the plans for the installation, whichis an alteration.

(A) The person proposing to install the fire sprinkler system must apply for the department's approval as required by section 4042.
(B) The application for the department's approval must include plansfor the proposed fire sprinkler system and a copy of the residential sprinkler installation instructions.
(2) The person installing a fire sprinkler system in a manufacturedhome or in a multi-unit manufactured housing dwelling unit with twodwelling units must be either the homeowner functioning as an owner-builder under the conditions of Business and Professions Code section7026.12 or a fire protection contractor holding a valid C-16 license issued by the California Contractors Licensing Board.
(3) The person installing the fire sprinkler system must obtain an inspection of the installation by a representative of the department prior toconcealing any portion of the system with wall or ceiling material.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code; and Section 7026.12, Business and Professions Code.

s 4310. Resolution of Disputes About the Requirements ofNFPA 13D.
The department, in consultation with the Office of the State Fire Marshal, will resolve any dispute about the application of the requirementsof NFPA 13D to manufactured homes and to multi-unit manufacturedhousing with two dwelling units.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code.

s 4312. Types of Materials; Standards for Materials;Listing and Labeling of Materials andEquipment Standard for Residential Sprinklers;Listing Criteria for Sprinklers Used in a LimitedArea Dwelling Manufacturer's InstallationInstructions.
(a) All piping, fittings, hangers, braces and supports, automatic sprinklers, valves, gauges and other materials or devices necessary to assemble a fire sprinkler system must conform to the requirements ofNFPA 13D for the types of materials, for the standards with which thematerials comply, and for the listing and labeling with which the materials and equipment must comply.
(b) Residential sprinklers must be listed as complying with UL 1626, "Residential Sprinklers for Fire Protection Service," 1994 edition, withrevisions dated through October 8, 1997, as published by Underwriter'sLaboratories and hereby incorporated by reference.
(c) The listing for residential sprinklers used in a limited area dwellingmust include the criteria specified at section A-5-3.1 of Appendix A ofNFPA 13D.
(d) The person installing the fire sprinkler system must obtain any applicable manufacturer's installation instructions, when such instructionsare issued by the manufacturer.
(1) The person installing the fire sprinkler system must install all materials and devices as required by the manufacturer's installation instructions.
(2) The person installing the fire sprinkler system must make themanufacturer's installation instructions available to the inspector fromthe Quality Assurance Agency or to the inspector from the departmentfor use during the inspection required by section 4308.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code.

s 4314. Construction Methods and Workmanship.
(a) Construction methods and workmanship requirements of the national Manufactured Home Construction and Safety Standards at 24 CFRPart 3280 apply to the installation of a fire sprinkler system during themanufacture of a manufactured home or of multi-unit manufacturedhousing with two dwelling units.
(b) The following requirements apply to the installation of a fire sprinkler system after the manufactured home or multi-unit manufacturedhousing with two dwelling units is shipped from the manufacturing facility.
(1) The person installing the fire sprinkler system -
A. must perform all work in a manner suitable for the purpose and
B. must maintain the integrity of both the components under installation and the components of other systems.
(2) The person installing the fire sprinkler system must bore holes inor notch structural framing members for the passage of piping as requiredby section 4316.
A. Alternate sizing and placement of holes and notches requires evidence provided by the installer with the plans for the fire sprinkler systemproving that the alternate boring or notching maintains the integrity of thestructural system.
B. The evidence must consist of engineering analysis or testing conducted and certified by a California licensed architect or professional engineer.

(3) If any insulation, vapor barriers, underfloor bottom board, or anyother materials are cut or moved in order to install a fire sprinkler system,the person installing the fire sprinkler system shall repair, replace, or reposition the materials in a workmanlike manner that maintains the integrity of the materials and system,

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health andSafety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code.

s 4316. Placement and Size of Holes and Notches in Joists, Beams, Plates, and Studs.
(a) Joist.
(1) A notch on the end of a joist must not be deeper than one-fourth(1/4) the depth of the joist.
(2) The edge of a hole bored in a joist must be at least two (2) inchesfrom the top and at least two (2) inches from the bottom of the joist. Thediameter of the hole must not exceed one-third (1/3) the depth of the joist.
(3) A notch in the top or bottom of a joist must not be deeper than one-sixth (1/6) the depth of the joist. The notch must not be located in the middle one-third (1/3) of the span of the joist.
(b) A hole in a ridge beam must not be more than 2" in diameter andmust be located in the middle one-third (1/3) of the depth of the beam.
(c) Top or bottom wall plate or a sill plate -
(1) A hole must not exceed 40% of the width of the plate,
(2) The edge of a hole must be at least 5/8 inch from any edge of theplate.
(3) The edge of a hole must be separated by at least 12 inches from thenearest edge of other holes or notches in the same plate.
(d) Wall studs.

(1) A hole in a wall stud must not exceed 40% of the width of the stud,
(2) The edge of a hole in a wall stud must be at least 5/8 inch from anyedge of the stud.
(3) A hole in a wall stud must not be located in the middle one-third(1/3) of the length of the stud.
(4) Only one hole is allowed in the upper or lower one-third (1/3) length of a wall stud.

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health and Safety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5,Health and Safety Code.

s 4318. Fire Sprinkler System Information and Installer Certification Label Reference Tag.
(a) The installer of the fire sprinkler system must complete and affix:
(1) a "Fire Sprinkler System Information and Installer Certification" label, and
(2) a Reference Tag.
(b) A "Fire Sprinkler System Information and Installer Certification" label,
(1) must be either printed on paper or scribed, etched or engraved inmetal, plastic or other equivalent material, with lettering at least 10 pointfont size;
(2) must be at least 8.5 inches by 11 inches in size;
(3) must be located on a wall or door surface inside the water heatercompartment;
(4) must be positioned in a manner that allows a person to easily readthe label; and
(5) must be affixed with adhesive or fasteners that discourage the removal of the label.
(c) A "Fire Sprinkler System Information and Installer Certification" label must include all the statements and requested information arranged in substantially the same layout, as shown on the following example:

Fire Sprinkler System Information and Installer Certification

Attention: Do not remove or cover this label.

This dwelling unit contains a residential fire sprinkler system. The system installer certifies that the system complies with the requirements of Title 25, California Code of Regulations, sections 4300 through 4324 and NFPA 13D, Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 1999 Edition. Do not change (alter) the fire sprinkler system without approval of the California Department of Housing and Community Development, Division of Codes and Standards. A homeowner may perform repairs without the Department'sapproval, if all materials and devices installed are the same type or characteristics as the materials and devices replaced. Please refer to section 4324 of the above noted regulations. Only the homeowner may change (alter) or repair the fire sprinkler system as an owner-builder without violatingthe State Contractors Licensing Board requirements. Any other person making changes (alterations) or repairs to the system must hold a valid C-16contractor's license. Future additions of heat sources, such as a wood burning stove or fireplace, may adversely affect the performance of sprinklers and may activate one or more sprinklers. You may obtain permits and information about fire sprinkler systems from the California Department ofHousing & Community Development, Division of Codes and Standards.
_____________________________ ______ ___________ ___________
Signature of System Installer Date County State
_____________________________ ______ ___________ ___________
Installation, Design Approval, and Inspection Agency Information
_______________________________________________________________
Name and Address of System Installer:
_______________________________________________________________
Manufactured Home Sereial Number(s)::
_______________________________________________________________
Date System Installed:
_______________________________________________________________
Name and Address of Agency Approving Design:
_______________________________________________________________
Name and Address of Agency Inspecting Installation:
_______________________________________________________________
System Design Basis and Tests
_______________________________________________________________
Number of Design Sprinklers:
1 head 2 head
Design Coverage: _________ ft. X _________ ft.

Flow rate one sprinkler _________ gpm @ _________ psi
Flow rate two sprinkler _________ gmp @ _________ psi
_______________________________________________________________
System installer must test this system as required by Title 25, California Code of Regulations, sectoin 4320. Homeowner or installer must hydrostatically test system for two hours at 50 psi minimum; 100 psi maximum.
_______________________________________________________________
Sprinkler Information
_______________________________________________________________
Manufacturer: ________________________________________________
Model: _______________________________________________________

Year of Manufacturer: _________________________________________
Temperature rating: _______ degrees F
Orifice Size: _____________ inches
Special Heads:
sidewall(s)
intermediate temperature
not applicable
_______________________________________________________________
Water Supply Requirements
_______________________________________________________________
In order for the fire sprinkler system to operate properly, the follow minimum water supply must be available at the base of the fire sprinker system riser:
__________ GPM @ not less than ______ psi for not less than minutes.
_______________________________________________________________
(d) A Reference Tag,
(1) must be made of paper, or at least the equivalent;
(2) must be at least 2 inches by 4 inches in size;
(3) must contain lettering of at least 10 point font size;
(4) must be covered in a permanent manner with a material that willprotect the tag from damage or deterioration without obscuring the information;
(5) must be permanently affixed to the fire sprinkler system riser by adhesive, or by plastic or wire tie, or the equivalent in a manner that prevents damage or loss; and

(6) must be positioned in a manner that is conspicuous to the representative of the enforcement agency that appears at the installation site forthe manufactured home or multi-unit manufactured housing with twodwelling units.
(e) A Reference Tag must include all the statements and requested information arranged in substantially the same layout as shown in the following example:

________________________________________________________________
NOTICE TO ENFORCEMENT AGENCY AND REPAIR PERSONS

Information pertaining to the fire sprinkler system design,inspections, and water supply needs are provided on theFire Sprinkler Information label located in the water heater compartment of this dwelling unit.
________________________________________________________________

Note: Authority cited: Sections 18015, 18025, 18029 and 18029.5, Health and Safety Code. Reference: Sections 18015, 18025, 18029, 18029.5 and 18030.5, Health and Safety Code.

s 4320. Requirements for Testing the System.
(a) A fire sprinkler system installed during the manufacture of themanufactured home or multi-unit manufactured housing with two dwelling units must be hydrostatically tested both at the manufacturing facilityand at the home's installation site. (continued)