60 amp feeder to 150 amp main breaker panel
- Thread starter yired29
- Start date
- Status
- Location
- Massachusetts
Looks good to me.
Thats the way I see it as well. The 60 amp OCPD provides the protection. The only problem I could see is if the 150 amp OCPD in the panel was not listed for #6 wire.
ceb58
Senior Member
- Location
- Raeford, NC
Lug listing would be the only hold back. Other than the lug wire rating you could feed a 400amp panel with #12 on a 20amp DP breaker.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
408.36 permits the installation the way you have explained it in your post.
408.36. Overcurrent Protection.
In addition to the requirement of 408.30, a panelboard shall be protected by an overcurrent protective device having a rating not greater than that of the panelboard.
408.36. Overcurrent Protection.
In addition to the requirement of 408.30, a panelboard shall be protected by an overcurrent protective device having a rating not greater than that of the panelboard.
Cow
Senior Member
- Location
- Eastern Oregon
- Occupation
- Electrician
I routinely feed oversized panels with smaller feeds just to get the extra spaces....
lakee911
Senior Member
- Location
- Columbus, OH
Would be nice if everything was coordinated such that you're tripping the breaker you expect to, but its code compliant.
Buck Parrish
Senior Member
- Location
- NC & IN
I agree it's allowed . An other way to do it . Take the main 150 out of the panel. Fill the space with a listed method.
Then install a 60 with a breaker clamp on the bus bar. Bring your service wires to it. Mark it MAIN.
Then you have a 150 breaker available for an emergency call some day.
Then install a 60 with a breaker clamp on the bus bar. Bring your service wires to it. Mark it MAIN.
Then you have a 150 breaker available for an emergency call some day.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
I agree it's allowed . An other way to do it . Take the main 150 out of the panel. Fill the space with a listed method.
Then install a 60 with a breaker clamp on the bus bar. Bring your service wires to it. Mark it MAIN.
Then you have a 150 breaker available for an emergency call some day.
They are not 'service wires', they are feeder conductors. I do not believe you would call it a "MAIN" either.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Pierre if you leave the 150 main breaker in the panel it is probably marked main. I don't see where marking the breaker that turns off the entire panel a main is an issue-- please explain.
lakee911
Senior Member
- Location
- Columbus, OH
I agree it's allowed . An other way to do it . Take the main 150 out of the panel. Fill the space with a listed method.
Then install a 60 with a breaker clamp on the bus bar. Bring your service wires to it. Mark it MAIN.
Then you have a 150 breaker available for an emergency call some day.
That's another way to do it, but I don't know that its any better. If you have a fault after the second 60A, but before a branch, you don't know which 60A will trip.
Most panels that I've seen come with a sticker labeled "MAIN" and a bunch labeled "SERVICE DISCONNECT." I've never been absolutely sure where they are to go...
Cow
Senior Member
- Location
- Eastern Oregon
- Occupation
- Electrician
I don't see any problem calling it a "main." What else would you call it?
If he was labeling it "service disconnect" then that would be a different story.
If he was labeling it "service disconnect" then that would be a different story.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
- Status