Modifying a Breaker Box for a temp Office Trailer


Old 10-05-18, 08:02 AM
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Modifying a Breaker Box for a temp Office Trailer

The company I work for has a temporary office trailer installed at an outdoor venue that we operate. The trailer is supplied with electricity from a Breaker Box that currently is being fed by a 240V line into a double pull breaker.

We have no major electrical needs and have decided to stop renting a mega expensive generator on a monthly bases and have purchased a 3500 watt Inverter Generator. Given that this new generator will not push 240 Volts my question is can I wire a standard 120V line into the currently existing double pull 240V breaker or should I replace that main breaker with an appropriate 120 V 20A breaker?

Thanks a bunch.
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Old 10-05-18, 08:35 AM
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You can feed the hot line from the generator into both sides of the 240V panel main breaker. It will work for any 120V loads in the trailer, but if you have any 240V loads they will not work. The generator will have a 20A breaker on it so an additional 20A breaker in the trailer panel is not required.
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