Subpanels

[lopro]

A home has a 200 amp main panel with a 100 amp subpanel in the basement. The owner desires to install another 100 amp panel in a detached garage. Is it possible to do this or do I installed a 50 amp for the detached garage?

 

[iwire]

A home has a 200 amp main panel with a 100 amp subpanel in the basement. The owner desires to install another 100 amp panel in a detached garage. Is it possible to do this or do I installed a 50 amp for the detached garage?

As long as the total calculated load remains under 200 amps you could add 600 amp sub panels in every room of the home.

 

[JohnJ0906]

A home has a 200 amp main panel with a 100 amp subpanel in the basement. The owner desires to install another 100 amp panel in a detached garage. Is it possible to do this or do I installed a 50 amp for the detached garage?

What is the calculated load for the service?
What is the calculated load for the garage?

How much does he what to put in the garage? Unless he is going to have a serious workshop, then a 50 or 60 amp might well be enough.

 

[frizbeedog]

lopro,

Welcome to the forum. :smile:

 

[Sparky555]

A home has a 200 amp main panel with a 100 amp subpanel in the basement. The owner desires to install another 100 amp panel in a detached garage. Is it possible to do this or do I installed a 50 amp for the detached garage?

I have a 200A main panel and two 100A subpanels, so I guess it is possible. I didn't do a load calculation because the local AHJ wouldn't know what to do with it, but it's probably around 75A total. It should get higher with some heaters & a welder.

Dave

 

[powerslave]

If they do decide to use a welder and heaters in the future which will put the entire load over 200-amps then they can put in a 400 amp service. Your 100-amp subpanels will be already in place and ready for use.

 

[LarryFine]

A home has a 200 amp main panel with a 100 amp subpanel in the basement. The owner desires to install another 100 amp panel in a detached garage. Is it possible to do this or do I installed a 50 amp for the detached garage?

The main breaker need not exceed the total of individual breakers. But don't waste money on more ampacity than you'll need. (The panel's rating may exceed it's used ampacity, but its feeder must be protected.)


"lopro" - Where do I know that name from?

 

[360Youth]

I have a 200A main panel and two 100A subpanels, so I guess it is possible. I didn't do a load calculation because the local AHJ wouldn't know what to do with it, but it's probably around 75A total. It should get higher with some heaters & a welder.

Dave

I did a home with 200 amp service and ended up with 200 amp panel and 100 amp subpanel because as i went there just wasn't enough breaker spaces. The load was not a problem, but I like extra circuits so as to to run the risk of overload down the road.