Firebrick43
Well-known member
If I read everything right I am good with 2 hots and a neutral in 1 gage thhn and a ground in bare 8 gage for 125 amp sub in 1 1/2 emt?
Thanks.
Thanks.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
125 sub panel wire.
- Thread starter Firebrick43
- Start date
wyliesdiesels
Well-known member
Attached or detached?
wire length?
#1 is correct for 125a but #8 is too small for the EGC. Need #6.
Aluminum will be cheaper
What are you feeding that needs 125a?
wire length?
#1 is correct for 125a but #8 is too small for the EGC. Need #6.
Aluminum will be cheaper
What are you feeding that needs 125a?
pattenp
Well-known member
Use a green stranded #6 THHN/THWN for equipment ground, not bare solid.
OP
Firebrick43
Well-known member
Attached or detached?
wire length?
#1 is correct for 125a but #8 is too small for the EGC. Need #6.
Aluminum will be cheaper
What are you feeding that needs 125a?
This is for an attached addition and garage. Basically a mother in law suite and a good size double garage. LP gas heat/stove. 12k mini split and an electric drier are the major loads.
This should have been done months ago but I am running behind.
OP
Firebrick43
Well-known member
Use a green stranded #6 THHN/THWN for equipment ground, not bare solid.
Just checked the big electrical supply house (local). They do not carry any form of 6 gauge wire in green. They carry 5 other colors and bare solid but no green.
mike93lx
ALLIANCE MEMBER
This is for an attached addition and garage. Basically a mother in law suite and a good size double garage. LP gas heat/stove. 12k mini split and an electric drier are the major loads.
This should have been done months ago but I am running behind.
Why 125a? My house is 100a with elec dryer, 2 ton a/c, 2 fridges, a freezer and all the other ancillary ****. From what you listed, 60a would be fine.
The emt can act as the egc. If you still want to run an egc, then you can use #6 stranded bare. Does not have to be green.
Do a load calc to be certain of the minimum feeder/panel size required.
Always provide more breaker space than you think you need. Panels are cheap. Main lug or main disconnect is optional since attached.
Do a load calc to be certain of the minimum feeder/panel size required.
Always provide more breaker space than you think you need. Panels are cheap. Main lug or main disconnect is optional since attached.
pattenp
Well-known member
Just checked the big electrical supply house (local). They do not carry any form of 6 gauge wire in green. They carry 5 other colors and bare solid but no green.
The reverse is here. I can get #6 stranded in green, but not #6 stranded bare at the supply house, they have to order the stranded bare. I can get #6 solid bare almost anywhere. As said by mm08822 you can use the emt as the ground.
OP
Firebrick43
Well-known member
Thank you everyone.
have done a load calc and wont be over 80 amps, but 125 allows for a welder in the garage if i ever want to or electeic cars become mandatory. The sub panel is a 200 amp 42 space square D QO. If I have to ever dig up/upgrade the service entrance it will become the main panel. (I shouldn't call it the main panel as that is out in the pole barn by the meter base and transformer)
Had my mother stop at home cheepo on her way out to see if they had #6 green and they did as well as the number 1. Even talked to the guy on the phone and confirmed exactly what I want.
Mom gets here and it green thhn 6 and black thhn 1/0. Those idiots can't do anything right!
I am sure he tells people he was a master electrician or something like that. Probably use it as they charged for #1 and it was 70 cents cheaper a foot than #1 at the electrical supply house.
It going to be a pain to deal with in the panel but no worse than aluminum. At least it has the simpull style jacket.
Sorry for the vent
have done a load calc and wont be over 80 amps, but 125 allows for a welder in the garage if i ever want to or electeic cars become mandatory. The sub panel is a 200 amp 42 space square D QO. If I have to ever dig up/upgrade the service entrance it will become the main panel. (I shouldn't call it the main panel as that is out in the pole barn by the meter base and transformer)
Had my mother stop at home cheepo on her way out to see if they had #6 green and they did as well as the number 1. Even talked to the guy on the phone and confirmed exactly what I want.
Mom gets here and it green thhn 6 and black thhn 1/0. Those idiots can't do anything right!
I am sure he tells people he was a master electrician or something like that. Probably use it as they charged for #1 and it was 70 cents cheaper a foot than #1 at the electrical supply house.
It going to be a pain to deal with in the panel but no worse than aluminum. At least it has the simpull style jacket.
Sorry for the vent
Last edited: