Section 4389 - Fuel-Fired Engine Driven Generator Units(a) All fuel-fired engine driven generators shall be tested, listed and labeled in accordance with nationally recognized standards by an approved testing agency.(b) Fuel-fired engine driven generators shall be installed in accordance with the equipment manufacturer's installation instructions and this subarticle. A copy of the installation instructions shall be provided in the commercial modular.(c) Generator units shall be mounted in a manner so that adequate structural support from the commercial modular frame is provided for the equipment. The equipment shall be secured in place by a method that will preclude displacement from vibration and road shock.(d) Generator unit compartments shall be designed and installed to provide a vapor-tight separation between the compartment and the interior areas of the commercial modular.(e) Generator unit compartments shall be constructed of galvanized steel, not less than 0.0299 inch (0.759 mm) thick. Seams and joints shall be lapped, mechanically secured and made airtight to the interior of the commercial modular. Alternate materials and methods of construction may be used if they provide equivalent quality, strength, effectiveness, fire resistance, durability and safety and are approved pursuant to this section.(f) Fuel-fired engine exhaust systems, fuel-supplies, electrical conduit, cables, conductors and equipment shall not penetrate any area of the compartment that separates the compartment from the interior of the commercial modular. Electrical conduit, cables and conductors penetrating the compartment in areas other than those that separate the compartment from the interior of the commercial modular, shall be protected by the use of tight fitting grommets.(g) Compartments shall be provided with ventilation. The type, amount and location of compartment ventilation shall be provided in accordance with the equipment manufacturer's installation instructions.(h) Except as provided by the equipment manufacturer's installation instructions, fuel-fired engine exhaust systems shall be separated by a minimum of 1 1/2 inches from any combustible material or shall be insulated or shielded so that the exhaust system does not raise the temperature of any combustible material to more than 194 degrees F (90 degrees C). Each exhaust system shall be provided with an effective spark arrester and shall not terminate adjacent to the commercial modular gasoline filler spout. Exhausts shall terminate beyond the periphery of the commercial modular.(i) Any generator shall be mounted in a manner to provide an effective bond to the commercial modular chassis. Listed equipment shall be installed to ensure that the current-carrying conductors from the generator and from an outside source are not connected to the commercial modular circuits at the same time.(j) Supply conductors from a generator to a junction box or distribution panelboard shall be of the stranded type installed in flexible metal conduit or equivalent mechanical protection.Cal. Code Regs. Tit. 25, § 4389
1. Amendment filed 9-7-73; effective thirtieth day thereafter (Register 73, No. 36).
2. Amendment filed 12-7-79; effective thirtieth day thereafter (Register 79, No. 49).
3. Amendment of section and NOTE filed 9-19-2011; operative 10-19-2011 (Register 2011, No. 38). Note: Authority cited: Section 18015, Health and Safety Code. Reference: Sections 18025, 18028 and 18029.5, Health and Safety Code.
1. Amendment filed 9-7-73; effective thirtieth day thereafter (Register 73, No. 36).
2. Amendment filed 12-7-79; effective thirtieth day thereafter (Register 79, No. 49).
3. Amendment of section and Note filed 9-19-2011; operative 10-19-2011 (Register 2011, No. 38).