theColonel26
Lifetime Supporting Member
How do you guys size supplementary breakers? Do you do it based on wire ampacity rating or based on what the max load of a circuit may be?
For example, if you have an 18AWG wire you may size the breaker for 7.5 Amps based on wire ampacity, but if it the devices it is supplying have a max load of 2 Amps you could size it for 2 Amps.
So how do you guys do it?
Yes, I know derating needs to be taken into account for wire rating, but that is not what I am asking about.
For example, if you have an 18AWG wire you may size the breaker for 7.5 Amps based on wire ampacity, but if it the devices it is supplying have a max load of 2 Amps you could size it for 2 Amps.
So how do you guys do it?
Yes, I know derating needs to be taken into account for wire rating, but that is not what I am asking about.