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-   -   Type of wire to run to sub panel (http://www.diychatroom.com/f18/type-wire-run-sub-panel-159739/)

MrAngles 10-11-2012 09:22 AM

Type of wire to run to sub panel
 
I'm finishing my basement, and decided to add a subpanel for power down there. I'd like to use a 50 or 60 amp breaker in the main panel, but I'm not clear on what wire to use to run to the subpanel. I can't seem to find any romex in 6 gauge or bigger at the big big stores, but I did find this online: http://www.wesbellwireandcable.com/R...mexnmb6-2.html Should I be using romex, or should I be using individual wires in a conduit? Will I need higher than 6 gauge to support 60 amps?

J. V. 10-11-2012 10:36 AM

The wire in the link can be purchased from a local electrical supply house. But, you need 6/3 NM. Not 6/2 NM. You must run four wires to the sub. H-H-N-G.

MrAngles 10-11-2012 11:23 AM

Quote:

Originally Posted by J. V. (Post 1028827)
The wire in the link can be purchased from a local electrical supply house. But, you need 6/3 NM. Not 6/2 NM. You must run four wires to the sub. H-H-N-G.

Thank you, what's the additional wire for?

kbc 10-11-2012 11:56 AM

the additional wire is for the ground, in a main panel nuetrals and grounds can be together but in a sub panel they hav to be isolated

MrAngles 10-11-2012 01:29 PM

Isn't 6/2 three wires, hot, neutral and ground? 6/3 is four leads, right?

BrandonD 10-11-2012 01:33 PM

Correct... 6/3 with ground contains two hots, a neutral, and a ground. One hot would be connected to each pole of your 2-pole feeder breaker in the main panel to run 240V and then connect to the buses in your subpanel (lugs or breaker).

MrAngles 10-11-2012 06:07 PM

Gotcha, cool, thank you.

sublime2 10-11-2012 07:02 PM

Quote:

Originally Posted by MrAngles
Isn't 6/2 three wires, hot, neutral and ground? 6/3 is four leads, right?

Generally speaking the first # in wire description refers to the gauge (thickness) of the wire.
The second # refers to the amount of wires within the sheathing. The ground is almost never referenced in that # but is almost always there.

k_buz 10-11-2012 07:06 PM

Quote:

Originally Posted by sublime2 (Post 1029122)
Generally speaking the first # in wire description refers to the gauge (thickness) of the wire.
The second # refers to the amount of wires within the sheathing. The ground is almost never referenced in that # but is almost always there.

You are correct on the gauge, but the second number refers to then number of insulated conductors.

sublime2 10-11-2012 07:20 PM

Quote:

Originally Posted by k_buz

You are correct on the gauge, but the second number refers to then number of insulated conductors.

Tomato, tomAto.
Terminology.
No?

MrAngles 12-29-2012 06:22 PM

Okay I have my 50A breaker, my sub panel and my 6-3 NM wire, with three 6-gauge conductors and a ground.

My sub panel has three lugs, two for hot and one for negative? Where do I hook up the ground? Do I just screw it in anywhere on the negative bar? Also since this is just going from the attached garage to the basement (it doesn't go outside anywhere), do I take the green screw out?
http://imageshack.us/a/img689/9201/subpanel.jpg
(sorry for the poor picture)
http://img543.imageshack.us/i/20121229154254.jpg

rrolleston 12-29-2012 06:46 PM

You will have to add a ground bar.

rrolleston 12-29-2012 06:47 PM

Quote:

Originally Posted by sublime2 (Post 1029129)
Tomato, tomAto.
Terminology.
No?

Yes it is.

MrAngles 12-29-2012 07:39 PM

Quote:

Originally Posted by rrolleston
You will have to add a ground bar.

Ok I see where the ground bar will pop in on the left side. Do I need to actually ground it to something in the basement, or is it just a spot for the ground wires to all connect to the 6-3 supply wire's ground?

And how about that green screw?

brric 12-29-2012 07:49 PM

Quote:

Originally Posted by MrAngles (Post 1082131)
Ok I see where the ground bar will pop in on the left side. Do I need to actually ground it to something in the basement, or is it just a spot for the ground wires to all connect to the 6-3 supply wire's ground?

And how about that green screw?

Remove the green screw.


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