ECN Forum Forums Code Related Discussion NEC & other Code issues 200 amp panel downstream of 90 amp breaker

I agree with John. It is perfectly acceptable to use a panel with that has a buss rating higher than the feeder. One thing to be careful about is the lug rating of 200 amp loadcenters since the minimum wire size for many of them is #1. I believe the lugs on 200 and 225 amp Square D loadcenters are rated down to #6.

Curt


[This message has been edited by caselec (edited 08-06-2005).]

BobH, I don't know if you're asking about the 200-amp main, or the 200-amp minimum service. I've done the setup that Steve describes, and consider it an additional disconnect. Personally I LIKE having an additional disconnect within sight in that situation.

The 200-amp minimum isn't an NEC requirement, but a local amendment. One town will allow 100-amp if you provide load calculations. I prefer to go with the 200-amp service than to do calculations. It's more time involved to make less money and I'd look like a fool if the additional service were needed in the future.

Dave

ShockMe77, you have shocked me.


I think that is a major stretch.


Notice it says "considerations such as"

Most reasonable people IMO would consider a 200 amp panel to be safe fed with a 90 amp breaker.


Would you require a 200 amp disconnect feeding a 125 amp load to be fed at 200 amps?

Bob

A similar situation IMO is running a 60-amp AC disconnect at 30-amps.

Dave

ever thought of just useing a main-lug 200A?