Subpanel- Lugs or Breaker???
Here’s my situation:
Service entrance enters the detached garage (Combo. meter/main panel) and the new house will be powered with a subpanel located in the house. The question is, does this subpanel have to have its own main disconect even if one already exists on the main (meaning the tandem breaker that feeds the sub)? So, can I use a main lugs or main breaker subpanel? Somewhere I remember reading that the equipment being turned on and off (in this case the house) needs to be in plain sight when isolating it. In my case the house is in plain view from the main panel on the garage.
I haven't run wire in years and then I wasn't really an electrician, just a grunt, but as far as I know, you're never harmed putting a main in a subpanel, and I think there's a maximum distance from main to subpanel beyond which you must install a breaker in the subpanel.
whether it is in plain view will ultimately depend upon the inspector.
BTW..... the two... panels ...would need to be within sight of each other ..... if your AHJ requires that ! perhaps that is what you meant
the sub-panel must not have a lower rating than the breaker feeding it,
if you use Main Lugs then the wire to the sub must be the same ampacity as the service feeders
Now ...I don't like handing out too much info, I don't know you or your quality. So I must say that you should have your work checked . Electricity is nothing to play with
May I ask who did the orig electric ?
Being in plain view or "in sight of" generally refers to motor disconnects and is interpreted to mean 50 feet.
You start by determining your load which in this case is an Article 220 thing. Then you size your wire for the load. Then you select the breaker size. There is a lot of slop in the Code at this point and you can go up to the next largest size available fuse or breaker to protect the wire. [I hope I have this right].
You do not need to use a main breaker in the subpanel. [See the tap rules.] But considering that it's for a house, it would bbe a good idea; at least it saves you a trip out to the barn in your mukluks on a snowy summer's night when the main blows.
Don't believe everything you read on the Internet.
As of 2002 NEC, all buildings must have a disconnecting means. So you have to put one in the sub that is in the house.
If you haven't drawn blood today, you haven't done anything.