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Old 12-19-2008, 02:41 PM   #16
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Meter base and sub-panel wiring

Ok so I need to read the first post...... I'm not sure where I got the garage from.....

You have a 200 amp service to your workshop with a 200 amp main panel and you want to have a 150 amp sub-panel. Why the sub-panel? Are you out of spaces in the 200? If the demand from the branch circuits of the 200 amp main is for example 100 amps then you only have 100 amps available for the sub technically speaking. There is nothing wrong with using the 150 panel but it really will never be utilized properly. To feed it 150 amps would IMO be costly overkill. Have you already purchased the wire and breaker for the feeder? You can feed it less than 150 amps you know. So I guess what I'm saying is why are you choosing a 150 amp sub to add to a 200 amp main panel when the workshop has a 200 amp service? It would be more reasonable from a cost stand point and design to have a 100 amp sub.

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