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(A) Circuits of 120 Volts or 120/240 Volts
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Each park trailer designed with a 120-volt or a 120/240-volt electrical system shall withstand the applied voltage without electrical breakdown of a 1 minute, 900-volt dielectric strength test, or a 1 second, 1080-volt dielectric strength test, with all switches closed, between ungrounded and grounded conductors and the park trailer ground. During the test, all switches and other controls shall be in the "on" position. Fixtures, including luminaires, and permanently installed appliances shall not be required to withstand this test.
Each park trailer shall be subjected to the following:
- A continuity test to ensure that all metal parts are properly bonded
- Operational tests to demonstrate that all equipment is properly connected and in working order
- Polarity checks to determine that connections have been properly made
- Receptacles requiring GFCI protection shall be tested for correct function by the use of a GFCI testing device
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