Split service

[JoeNorm]

I'm wiring an addition. It's a garage, bedroom and storage area. For various reasons the easiest way to feed the new garage is to split the 200 amp service in the crawlspace and feed a new 200 amp panel in the garage.

But it just occurred to me that maybe this won't work because the two panels would have to be grouped since they are within the same building........is this true?

There is a main disconnect exterior of the building so we're talking feeders not service wires.

thanks

 

[augie47]

If the addition in attached and the feeders are protected by a common disconnect the panels do not have to be grouped.

 

[kwired]

Presuming the exterior disconnect is a proper "service disconnect" then what leaves it is a feeder. There is no limit other than the ampacity of the feeder circuit of what you could supply from this. If you wanted you could run the feeder all the way across the building and make several taps to it with either 200 amp conductor or make sure you comply with the tap rules in 240.21 should you tap less than 200 amp conductors from it, vs running all your circuits back to one main panel.