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Home Portable Generator Sub-Panel Installation Copyright-GeneratorPanel-ARROWS-460x613-IMG_6575

Copyright-GeneratorPanel-ARROWS-460×613-IMG_6575

The arrow indicates the change from two single pole circuit breakers to one, two pole, 30 amp circuit breaker to feed the new generator sub-panel.

The upper arrow points to the 10/3 Romex cable that is coming from the generator inlet mounted outside which will supply power to the generator sub-panel from the generator when needed.

The lower arrow points to the 10/3 Romex cable that is coming from the main panel to feed the Square D generator sub-panel on street power.

Here is the Square D generator sub-panelcompleted and labeled.
This Square D generator sub-panel is different in several ways from a regular sub-panel. It comes with two main breakers, one for street power and one for generator power. They are interlocked together to prevent both from being on at the same time. In addition each main breaker has a clamp on it holding it to the busbar as is required by article 408.36(D) in the National Electrical Code