Townhome individual unit main feeder

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Sierrasparky

Senior Member
Location
USA
Occupation
Electrician ,contractor
I have a client with a electric range request. The individual townhome units are all gas powered appliances and have A/C. The weird thing is the Feeder to the unit is SER cable #2 AL w 4 grnd. on a 60 amp breaker.

What do you think about putting a 90 amp or 100 amp breaker in place of the 60 amp main breaker for the unit as the wire is rated for 100 amp dwelling service.
 

kwired

Electron manager
Location
NE Nebraska
I think it is possible the initial installer ran 2AWG knowing it could have a 100 amp breaker on it sometime down the road, but knew 60 amp breaker was plenty for the current load and cost less then 100 amp breakers. I have done that when a 40 space panel wasn't enough spaces and had to add another 20 space panel - put all the general use circuits for living rooms, bedrooms and such in the subpanel and supply with a 60 amp breaker - but run heavy enough conductor or at least big enough conduit nipple to easily convert to 100 amps if ever needed.
 

Sierrasparky

Senior Member
Location
USA
Occupation
Electrician ,contractor
Update

Update

The photos the customer gave me are were incomplete.
Apparently All the meter sockets are 100 amps
However the main switch appears to supply several more meters than was told.
It may power 12 units at 600 amps

With load diversity I would think there is no big deal. But....
 

Sierrasparky

Senior Member
Location
USA
Occupation
Electrician ,contractor
I see I should not use the word diversity in this case.
however the demand will be less than 100% won't it.
Will I need to perform a whole complex calculation then?
 

Sierrasparky

Senior Member
Location
USA
Occupation
Electrician ,contractor
Yes that is what my gut says.
My only concern is what if others do this or already have?
I like gas appliances but there are some that only want a an electric range.
 
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