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Question about Wire between Meter Base/Disconnect and Panel

Samh

Well-known member
Joined
Aug 16, 2006
Messages
482
Location
Canton GA
I can't seem to find anything actually specifying what is acceptable between the meter base/disconnect to the panel. Was wondering if THHN is acceptable, or if I need to use SER. I'd prefer to run 3/0 THHN, but can't find anything saying it is acceptable.

Some more info.
  • 200A meter base/Disconnect
  • 200A panel
  • 200A panel will literally be on the inside of the wall where the Meter base/Disconnect is.
 
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TuxThePenguin

Well-known member
Joined
Jul 8, 2020
Messages
633
Location
MA
THHN or TWHN? I was asking about THHN, as that is what is available near me. I read about the conduit, and that was going to be the plan regardless.

THWN is THHN that is wet-rated, and cable sold as THHN may also be THWN.

If he says to use THWN, then you can look at cable being sold as "THHN" but double check it's wet rated.
 

Norcal

Well-known member
Joined
Mar 16, 2008
Messages
13,795
THHN is for dry locations only, needs to be THWN to be used outdoors or in a underground conduit which are considered wet locations. Most THHN is dual rated as THHN/THWN but have to read the cable jacket to be sure.
 

wyliesdiesels

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Joined
Aug 14, 2012
Messages
20,257
Location
Modesto, CA
THHN or TWHN? I was asking about THHN, as that is what is available near me. I read about the conduit, and that was going to be the plan regardless.

Needs to be THWN but almost all THHN is dual rated. Ive actually never seen single rated THHN around here at any of the stores..
 
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rlitman

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Joined
Oct 18, 2010
Messages
24,778
Location
Long Island
Needs to be THWN but almost all THHN is dual rated. Ive actually never seen single rated THHN around here at any of the stores..

I keep reading about this unicorn THHN single-rated wire, and have yet to ever encounter it. That's because both THHN and THWN are WAY outdated standards (just like NM, which is currently NM-B), but as with many conventions, these names never seem to disappear.

If you're buying new wire, it should be THHN/THWN-2.
 

mike93lx

ALLIANCE MEMBER
Joined
Dec 9, 2013
Messages
38,398
Location
Richmond, VA
I keep reading about this unicorn THHN single-rated wire, and have yet to ever encounter it. That's because both THHN and THWN are WAY outdated standards (just like NM, which is currently NM-B), but as with many conventions, these names never seem to disappear.

If you're buying new wire, it should be THHN/THWN-2.

How do you feel about 220v?
 

wyliesdiesels

Well-known member
Joined
Aug 14, 2012
Messages
20,257
Location
Modesto, CA
I keep reading about this unicorn THHN single-rated wire, and have yet to ever encounter it. That's because both THHN and THWN are WAY outdated standards (just like NM, which is currently NM-B), but as with many conventions, these names never seem to disappear.

If you're buying new wire, it should be THHN/THWN-2.

You are correct. :thumbup:

Im just too lazy to type -2 :lol: :lol_hitti

How do you feel about 220v?

Lmao :lol: :lol_hitti :bounce:
 
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