Circuit naming

There are two panels at the main service entrance, designated A and B, and two sub-panels in the garage.

Circuit names trace the path from the main panels, giving the position in each panel in the path by breaker number, with each level of the hierarchy separated by a slash. A double pole breaker using positions N and M is designated N+M or (older) N-M).

Thus the circuit on breaker 3 of panel A is A/3, one of the subpanels is A/6+8, and a double pole circuit in panel A/6+8 might be A/6+8/1+3.

Breaker assignments

Panel A/6-8 (left garage panel)

100A panel fed from positions 6 and 8 of main panel A