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-   -   running wire for 50A subpanel in a detached shed (http://www.diychatroom.com/f18/running-wire-50a-subpanel-detached-shed-98507/)

amakarevic 03-15-2011 04:52 PM

running wire for 50A subpanel in a detached shed
 
i am about to run wire for a 50A subpanel in a detached shed. i will have a circuit to connect to once i convert from an electric to a gas stove. but i first want to run the wire. i have about 30 ft of conduit buried already from the basement to the shed.

Q1: do i just need to run 3 exterior grade gauge 6 wires and can the ground wire be the same (insulated) as the hot and neutral ?

Q2: when setting the subpanel, does the ground bus connect to the ground wire coming in, in addition to the grounding rod, which i have driven into the ground about a foot away from the shed?

jbfan 03-15-2011 05:44 PM

Q1- The ground wire can be smaller, a #10 would work here.

Q2-The ground from the house and the rod connect to the ground bus in the garage.

You are going to run 4 wires to the garage right?

amakarevic 03-16-2011 12:37 AM

Quote:

Originally Posted by jbfan (Post 610053)
You are going to run 4 wires to the garage right?

what's the 4th wire for ?

SD515 03-16-2011 06:29 AM

4 wires are used to install a sub-panel. 2 hots, 1 neutral & 1 ground. If you're installing a sub-panel in an outbuilding, you might as well take full advantage of its capabilities.

J. V. 03-16-2011 11:56 AM

Quote:

Originally Posted by amakarevic (Post 610336)
what's the 4th wire for ?

Its the grounding conductor (EGC) and is required. It connects to the panel ground bar and to the rod. You need a disconnect out there too. 60 amp is the smallest you can go. The feeder can be 50 amp though.

amakarevic 03-16-2011 03:27 PM

Quote:

Originally Posted by SD515 (Post 610402)
4 wires are used to install a sub-panel. 2 hots, 1 neutral & 1 ground. If you're installing a sub-panel in an outbuilding, you might as well take full advantage of its capabilities.

so the 2 hots and the neutral should be gauge 6 and the ground can be smaller (gauge 10). does it matter if the ground is insulated?

jbfan 03-16-2011 03:37 PM

Quote:

Originally Posted by amakarevic (Post 610741)
so the 2 hots and the neutral should be gauge 6 and the ground can be smaller (gauge 10). does it matter if the ground is insulated?

No, but it will be an easier pull with an insulated wire.

LyonsElecSupply 03-17-2011 12:23 AM

Quote:

Originally Posted by jbfan (Post 610747)
No, but it will be an easier pull with an insulated wire.

For future reference, I thought all wire inside conduit had to be insulated.....

amakarevic 03-17-2011 01:29 PM

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Jackofall1 03-17-2011 01:42 PM

Quote:

Originally Posted by amakarevic (Post 611349)
hey y'all, please check out my new inquiry:

http://www.diychatroom.com/f18/thhn-...93/#post611347

much appreciated :thumbsup:

Did and answered

Saturday Cowboy 03-17-2011 06:04 PM

Quote:

Originally Posted by LyonsElecSupply (Post 611064)
For future reference, I thought all wire inside conduit had to be insulated.....

This I have not heard. I agree that it almost always would be a good idea, but where a code reference for that statement? I am not sure but I believe that a bare ground is ok in pipe?


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