DIY Home Improvement Forum banner

upgrade or sub panel

1675 Views 3 Replies 4 Participants Last post by  J. V.
I am buying a home with a 100amp entrance. I am putting in an electric hot water heater, but already have an electric range and dryer. Do I need a subpanel for the water heater or do I have to change the whole entrance??
1 - 1 of 4 Posts
How many spare breaker slots do you have. If you have 2 you can install a 2 pole 30 amp breaker and run #10/3 cable for the WH. If you have the spare slots don't concern yourself with a load calculation. Your panel is designed to hold as many breakers that it will accept.
If you do not have any spare breakers you can use tandem breakers to free up some space. You must be sure your panel will accept tandems and how many! 100 amp services are not always to small. In fact it may be just right for your house.
1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.