sub panels

Status
Not open for further replies.
B

buckeyejs

Member
I have a bid from a contractor. They are replacing a 60amp fuse box and replacing it with a 125 amp subpanel and connecting it to the main panel in a seperate area. They want to use only 100 amp cable though. This doesn't sound right. I need opinions
 
As 480 stated there are ways to do this and still be code compliant. There's not enough info in your post to fully answer the question.

Welcome to the Forum. :)
 
buckeyejs said:
I have a bid from a contractor. They are replacing a 60amp fuse box and replacing it with a 125 amp subpanel and connecting it to the main panel in a seperate area. They want to use only 100 amp cable though. This doesn't sound right. I need opinions
Click to expand...
Hello and welcome.
If you are an Electrical contractor why are you getting bids for work you should be doing.

Are you really an electrical contractor?
 
My supply house only stocks 125A and up panels so I usually back feed the 125A panel with 100A breaker and install the required tie down kit.
 
This is not opinion its is fact. What post 2,3, and 4 said are spot on.

My opinion without the facts is your EC is not doing anything abnormal.
 
480sparky said:
As long as the cable is protected with a 100-a fuse or breaker, it's perfectly fine.
Click to expand...

Isnt there something in the code about a plug in breaker can not be over 100 amp ? Thats why people like feed the sub panels with 100 amp . I had a 125 plug in square D one time but I believe it went over the buss lugs on the left and right to cover 4 lugs.
 
Last edited:
jetlag said:
Isnt there something in the code about a plug in breaker can not be over 100 amp ? Thats why people like feed the sub panels with 100 amp . I had a 125 plug in square D one time but I believe it went over the buss lugs on the left and right to cover 4 lugs.
Click to expand...
There is nothing in the NEC that I know about however many panels esp. 200 amp panels will not allow a breaker larger than 125 amps by the manufacture spec.
 
buckeyejs said:
I have a bid from a contractor. They are replacing a 60amp fuse box and replacing it with a 125 amp subpanel and connecting it to the main panel in a seperate area. They want to use only 100 amp cable though. This doesn't sound right. I need opinions
Click to expand...

Sierrasparky said:
Hello and welcome.
If you are an Electrical contractor why are you getting bids for work you should be doing.

Are you really an electrical contractor?
Click to expand...

He said he's a Contractor. He didn't say he was an Electrical Contractor. I think the mods would allow it...
 
At least he said "contractor" not "handyman". I'd much rather a customer second guess a safe install then a not question a hazardous install. Plus you have to give him points for knowing how to squeeze by.
 
I am just out of school, and still learning the ropes. Give me credit for asking the question, even if it is a stupid one. I knew the answer but was second guessing myself. So I needed opinions. And the bid was for a job at my church. They got a bid from somebody else and asked me too take a look at it.
 
Status
Not open for further replies.
Top