Electrician Interview Question:

What does "14-2" mean?

Submitted by: Administrator

This is used to describe the size and quantity of conductors
in a cable. The first number specifies the gauge. The second
the number of current carrying conductors in the wire - but
remember there's usually an extra ground wire. "14-2" means
14 gauge, two insulated current carrying wires, plus bare ground.

-2 wire usually has a black, white and bare ground wire. Sometimes
the white is red instead for 220V circuits without neutral. In
the latter case, the sheath is usually red too.

-3 wire usually has a black, red, white and bare ground wire.
Usually carrying 220V with neutral.
Submitted by: Administrator