Adding a sub panel
How should I size this sub panel?
8-3 will give you 40a @240v
If either hot feed bus goes over 40a the breaker will trip
How big is your main panel..100a...200a ?
How many circuits are you figuring you need ?
Kitchen needs 2 counter circuits, DW...microwave...disposal ?
Bath needs a 20a circuit
Bedroom needs AFCI
Yeah that should do it
If a big kitchen you might add a 3rd circuit for the counter - I am
And if the bedroom is big you may want to add a 2nd circuit
IE if it will be used as a TV room
I only have 1 circuit to my Master bedroom which is big
Not sure what you have for panels at stores near you
I haven't looked in a while
But when I ran a 60a sub I used a small 100a panel & fed it with 60a
More room for circuits just in case
Now's the time to add what you may need in the future, plan it out: http://books.google.com/books?id=6KQ...age&q=&f=false
Be safe, Gary
Is there any required calculation that I have to do in order to size the panel?
We all know that this size feeder will be fine (we have been living off of a single 15A circuit for years) but will the inspector require a certain size based on the loads?
I can't see where any load you have would exceed the 40a sub
As long as you put circuit on both hot bus I think you should be fine
What a Building Dept requires can differ by area
I wasn't even required to submit a plan of where lights & outlets would be located
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