On Fri, 03 Nov 2006 15:04:43 GMT, Pason wrote:

I'm wondering about putting a subpanel in my garage.

Right now there's only 1/2" EMT under about a 10 ft run of concrete and
one 15 amp circuit.

Question 1. Would it be legal to run three #10 wires for a subpanel fed
from a 30 amp breaker and leave the #14 for the 15 amp circuit? If that
conduit is continuous will that be fairly easy to pull through? Can I
ground through the EMT? I've heard this might lower the allowable
number of wires in the conduit.

Question 2. Once I have that subpanel, is there any limit to the number
of circuits that can be split from it if none of them are over 30 amps?
eg. could I have a 30 amp 220V and a 20 amp 110V?

Thanks for any help you can provide.


IMHO, since I am not your electrician, and you need to follow local
codes.

#1

The 2006 NEC allows for 5 #10 THHN conductors. From experience, I
typically on do half of the allowed number/size of conductors to
prevent damage in pulling wire, and save on labor costs.

EMT can be used for your grounding method, per 2006 NEC 358.60. From
experience, I learned to pull green for everything. Too common is it
hearing stories about the ground path being broken, by a loose/broken
connection, resulting in someone dying. So I pull a green/ground for
everything.

#2 I think you need to plan this out. Figure out what you want to
power, it's demand, etc.

later,

tom @ www.FindMeShelter.com