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South Bend Fire Department <br />CommanderChassis <br />centers will be located strategically throughout the vehicle to minimize wire length. Forease of <br />maintenance,all electrical distribution centers will be easily accessible. Alldistribution centers <br />containing fuses, circuit breakers and/or relays will be easily accessible. <br />Circuit protection devices, which conform to SAE standards, will be utilized to protect electrical <br />circuits. All circuit protection devices will be rated per NFPA requirements to prevent wireand <br />component damagewhen subjected to extreme current overload. <br />General protection circuit breakers will be a combination of automatic andmanual reset <br />breakers. This will provide a durability and capacity maximization of the electrical system. <br />When required, automotive type fuses will be utilized to protectelectronicequipment. Control <br />relays and solenoid willhave a direct currentrating of 125 percent of themaximum current for <br />which the circuit is protected per NFPA. <br />EMI/RFI PROTECTION <br />To prevent erroneous signals from crosstalk contamination and interference, the electrical system <br />will meet, at a minimum, SAE J551/2, thus reducing undesired electromagnetic and radio <br />frequency emissions. Anadvanced electrical system will be used to ensureradiated and <br />conducted electromagnetic interference (EMI) or radio frequency interference (RFI) emissions <br />are suppressed at their source. <br />The apparatus will have the ability to operate in the electromagnetic environment typically found <br />in fire ground operations to ensure clean operations. The electrical systemwill meet, without <br />exceptions, electromagnetic susceptibility conforming to SAE J1113/25 Region 1, Class C EMR <br />for 10KHz-1GHz to 100 Volts/Meter. The vehicle OEM, upon request, will provide EMC testing <br />reports from testing conducted on an entire apparatus and will certify that the vehicle meets SAE <br />J551/2 and SAE J1113/25 Region 1, Class C EMR for 10KHz-1GHz to 100 Volts/Meter <br />requirements. Component and partial (incomplete) vehicle testing is not adequate as overall <br />vehicle design can impact test results and thus is not acceptable by itself. <br />EMI/RFI susceptibility will be controlled by applying appropriatecircuit designs and shielding. <br />The electrical system will be designed forfull compatibility withlow-level control signals and <br />high-powered two-way radio communication systems. Harnessand cablerouting will be given <br />careful attention to minimize the potential for conducting and radiated EMI/RFI susceptibility. <br />ELECTRICAL HARNESSING INSTALLATION <br />To ensure rugged dependability, all wiring harnesses installed by the apparatus manufacturer will <br />conform to the following specifications: <br />SAE J1128 - Low tension primary cable <br />SAE J1292 - Automobile, truck, truck-tractor, trailer and motor coach wiring <br />SAE J163 - Low tension wiring and cable terminals and splice clips <br />10039-001609/02/20 <br />72 <br />PDF created with pdfFactory Pro trial version www.pdffactory.com <br /> <br />