Branch & Lighting Circuits Calc.

[Kissi Asiedu]

Could anyone share an idea of how to calculate total cables needed for
branch and lighting circuits. For example; how many 14/2, 12/2 romex etc.
would one need for 3000 sq ft single level house.
Or does anyone have recommendations as to how many feet one would need for
such house?

Thanx

 

[SQLit]

Could anyone share an idea of how to calculate total cables needed for
branch and lighting circuits. For example; how many 14/2, 12/2 romex etc.
would one need for 3000 sq ft single level house.
Or does anyone have recommendations as to how many feet one would need for
such house?

Thanx

Location of the service to the heavy loads would be necessary to start
guessing at the footage needed for a given size of cable.

There is not a box answer each house is different, each region of the US is
different. Where you live there might not be a/c unit.

I have special requirements for my garage and for my computer equipment,
means more circuits.

You will have 20 or so cables at the service depending on the equipment

 

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Could anyone share an idea of how to calculate total cables needed for
branch and lighting circuits. For example; how many 14/2, 12/2 romex etc.
would one need for 3000 sq ft single level house.
Or does anyone have recommendations as to how many feet one would need for
such house?

"Feet" is going to be hard unless we know the floor plan but circuits
is a little easier. You need a minimum of 5 15a circuits for the
general lighting load. Two twenty amp minimum for the small appliance
loads in the kitchen plus any fixed in place equipment. 20a for the
bathrooms and one 20 for the laundry. Then you need all the other
fixed in place equipment.

 

[Chris]

"Feet" is going to be hard unless we know the floor plan but circuits
is a little easier. You need a minimum of 5 15a circuits for the
general lighting load. Two twenty amp minimum for the small appliance
loads in the kitchen plus any fixed in place equipment. 20a for the
bathrooms and one 20 for the laundry. Then you need all the other
fixed in place equipment.

Assuming you are looking at doing this yourself, I am thinking the price
break on a 1000' foot spool will play a large factor in it as well.

Chris