Splitting 200 amp panel feeder

Status
Not open for further replies.

sodaparis

Member
Location
Portland Oregon 97223
Occupation
Maintenance Technician
Hello, first post. I’m looking for options / opinions to feed 2 sub panels from new meter main (outside wall of detached garage). My current plan is to split (Polaris) the 200 amp feed from the meter main right before the sub panel inside the garage.

Both panels will be 200 amp main breaker panels, the new meter main is 200 amp Solar ready 12 space and 2 of the spaces will have plug on feed thru lugs that power the sub panels and are protected by the 200 meter main breaker.

Some background: The current setup has a power pole on the side of the property with a 10k transformer that serves 2 homes. The drop comes in front of the detached garage, across a patio (about 10 ft off the ground) and to a weatherhead near the back of the main level of the house. Meter socket on the siding (no disconnect) then into the house with a 35 year old GTE 200 amp main panel right behind the meter which feeds a 50 amp sub panel in the garage and a 100 amp sub panel in a mechanical room at the front of the house.

The power company is in the process of upgrading the transformer (25k), and I am planning on undergrounding the service (about 50ft) from the pole to the side of the garage (new meter main). From there I will install SER up and over from the right side of the garage to the left, splice the SER with one set of wires going to the new garage panel (also current location of the existing garage panel) the other set will switch to individual conductors to go into conduit under the patio deck and to an 200 amp outdoor panel (same location as existing meter socket. From there I will use the existing 200 main location to extend all the circuits and sub panel feed as needed keeping all the junctions accessible.

Leviton Solar ready Meter main
Leviton outdoor main breaker panel
Leviton indoor main breaker panel
All plug on neutral panels
No option with these panels fir a bolt on Feed through lug (as far as I know)
 
The feeder from the meter would need to be protected by its own 200 amp breaker, can’t rely on the 200 amp breaker in the meter base.

If you added 100 amp of solar and landed it in the meter base then your interior panels could be drawing 300 amp on a 200 amp feeder before the breaker would pop.

Edit: It might be acceptable to size the feeders for greater then 300 amps. Read the feeder and tap rules.
 
Last edited:
Thanks CW.
The panel is Leviton’s LP-120 SR.
Both grid and solar would both come in before the Main breaker. Feeder is on the bus after the main breaker, I don’t see how it could draw/feed more amps than the rating of the main breaker.
 
This site is designed for:
  • Contractors
  • Electricians
  • Engineers
  • Inspectors
  • Instructors
  • Other electrically related individuals
This NEC® Forum is for those in the electrical and related industries. Questions of a "How-To" nature by persons not involved in the electrical industry will be removed without notice.

Knowledge and the practical application of the National Electrical Code is an essential part of all electrical installations. If it's important for you to understand the National Electrical Code, then look no further.

To better help us serve you, please be sure to update your account details with your occupation field and location if you have not done so already. You can access your account details by clicking on your account name at the top right of the page when on the forums.
 
Status
Not open for further replies.
Top