Rating Service Amperage

[scosta]

Question.

When you have service entrance cable rated for 100 amps, a main circuit panel rated for 100 amps, and 2 50 amp circuits, one range and one lighting, is the service rated at 100 amps or 50 amps? There was no main breaker.

Thanks, Steve

[Marc D. Shunk]

That would be a 100 amp panel, then. Common on the old fuse boxes. A range pullout, a lighting pullout that served 4 Edison based fuseholders below. That sort of panel typically also features subfeed lugs that are often doubled or tripled up.

[Gerry Beaumont]

Originally Posted by Marc D. Shunk

That would be a 100 amp panel, then. Common on the old fuse boxes. A range pullout, a lighting pullout that served 4 Edison based fuseholders below. That sort of panel typically also features subfeed lugs that are often doubled or tripled up.

Mark as usual is totaly correct, I know these as "mains and range" panels like the one pictured below

Regards

Gerry

[Jae Williams]

Very common in houses built in the 40's and 50's. Especially the double tapping of the sub feeds. Right on, Mark.