UL CERTIFIED TEST
The generator and all related electrical systems are independently tested and certified in writing by Underwriters Laboratories (UL). The testing conforms to NFPA 1901, Chapter 23.16.2 requirements. The wiring and permanently connected devices and equipment are subjected to a dielectric voltage withstand test of 900 volts for 1 minute.

The dielectric tester (shown in photo) has a 500 volt-amperes (VA) or larger transformer, with a sinusoidal output voltage that can be verified.

The test is conducted as follows:
1. Isolate the power source from the panel board and disconnect any solid state low voltage components.
2. Connect one lead of the dielectric tester to all the hot and neutral busses tied together.
3. Connect the other lead to the fire apparatus frame or body.
4. Close any switches and circuit breakers in the circuits.
5. Apply the dielectric voltage for 1 minute in accordance with the testing equipment manufacturer's instructions.

Electrical light towers, floodlights, motors, fixed appliances, and portable generators (as applicable) are operated at their full rating or capacity for two hours to ensure proper operation.

Testing procedures are conducted as outlined in NFPA 1901, Chapter 23.16.5.3. The results of each test are recorded on an appropriate form and provided with the delivery documentation.