subpanel

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Old 01-08-07, 02:13 PM
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subpanel

I'm finishing my basement and I'm installing a subpanel. I am feeding the sub with a double pole 100 amp breaker. I have a double 40 amp for a/c and a double 50 amp for a stove. Now it looks like there is 100 amp on either side of the box. So is the double 50 on one side gonna be all the feeder breaker can hold? And does this mean I am running 180 with only these two appliances. I have seven 15s and four 20s I still need to install. Is this feeder breaker going to be large enough?
 
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Old 01-08-07, 02:50 PM
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> I have a double 40 amp for a/c and a double 50 amp for a stove.

In the main panel or the new subpanel?

> And does this mean I am running 180 with only these two appliances.

No; the most you could use with the range and A/C is 90A (40+50). However, the A/C probably uses quite a bit less than 40A and the range would only approach 50A if all four burners were on while the oven was in self-clean cycle. The A/C only draws maximum current for a few seconds when the compressor first starts.

> I have seven 15s and four 20s I still need to install. Is this feeder
> breaker going to be large enough?

The breaker ratings are unimportant. You need to calculate the actual load -- what are the ratings on the appliances, how many watts of lighting, how many square feet is the remodel, etc?

What is your main service size?
 
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