6/3 or 6/4 for 50A gen


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Old 02-12-11, 10:20 PM
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6/3 or 6/4 for 50A gen

Now that I have acquired a larger gen, I need to get the juice to the inlet box.

I have the connectors, just looking for some flexible cord to terminate. Found Wesbellwireandcable and they have both 6/3 & 6/4.

Are the gen cords normally 6/4? I have viewed the specs as 4-conductors but not sure if the ground has to be a large wire in this application.
 
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Old 02-13-11, 03:24 AM
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You need 4 wire for a generator. The ground is not required to be the same gauge as the current carrying conductors, but in most SJOW cords it will be the same.
 
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Old 02-13-11, 07:31 AM
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Flexible cords count the ground as a conductor in the labeling. For example 6-3 would have a black, whaite and a green; 6-4 would add a red to the B/W/G.
 
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Old 02-13-11, 07:57 AM
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This is where i'm confused...I used this 6/3 to connect the inlet to the breaker....and has a red conductor.


I wouldn't use this for a wet location gen cord but that's what i'm referring to.

 
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Old 02-13-11, 11:47 AM
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As pcboss said, FLEXIBLE cords count the ground in the labeling. Romex does not. So 6/3 Romex and 6/4 flexible (SJOW) both have 3 conductors plus ground.
 
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Old 02-13-11, 06:45 PM
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I forgot to mention they have both wires in a flexible setup....I guess the 6/4 just has the 6ga ground as opposed to a smaller wire with less insulation.

This is the chart I was looking at, need to scroll down to the #6.

Will need to call them anyway, the pricing isn't listed for UL rated wire.

Portable power cord cable SO 10 5 SOOW 12 4 16 3 10 2
 
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Old 02-13-11, 08:32 PM
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You are confusing 6/3 Romex, which has stranded conductors (since 6/3 solid would be a total b!tch to work with), with 6/4 SJOW, which has much finer strands, softer insulation, and is much more flexible because it is designed to be used as a non-permanent 'cord'. Even though the Romex has stranded conductors and is somewhat flexible, it is NOT rated as a flexible cable and can not be used as a 'cord'.

Does that help you understand a little better?
 
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Old 02-14-11, 06:56 PM
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I understand the flexible part...I guess I was considering the term "flexible" to be anything that's just easier to bend than romex.

However "flexible" used in this form is just fine strand wire that's like an extension cord flexible which is what i'm after. Seems it can be labeled flexible and may be romex that's just easier to bend but I need the SJOW like you mentioned.

The 6/4 SJOW came out to roughly $5.70/ft and that's for UL rated..about $1/ft less if it's not UL rated.
 
 

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