Oversized Subpanel Breaker Question

Old 08-17-09, 01:58 PM
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Oversized Subpanel Breaker Question

I have a concern over whether this setup is to code.

I have 150A service to my house into the main panel. I have a 50A breaker, run through #6 wire, to a subpanel in my workshop. The subpanel is a 100A panel with a 100A breaker in it.

The subpanel should never see more than 50A since it is protected by a 50A breaker on the main panel.

Would this be considered a code violation?
Old 08-17-09, 02:21 PM
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No it's not a code violation, that is a pretty standard way of doing it.
The 50 amp breaker is your overcurrent and short circuit protection of that circuit so, as long as everything is at least rated 50 amps then your fine.

The 100 amp breaker is just a "means of disconnect".
Old 08-17-09, 03:08 PM
Tolyn Ironhand's Avatar
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The 50 amp breaker is protecting your #6 wire and the sub panel. The sub panel is rated for a max of 100 amps. You are under that. As Wirenut posted, you are just fine.

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