A high-amperage circuit originating from a breaker or fused disconnect in a primary service panel that supplies a downstream subpanel. It carries the full capacity for the secondary enclosure and must include a separate equipment grounding conductor. Sizing this feed requires calculating the total connected load of the downstream branch circuits.
Heard on the job
We need to pull a 100-amp subfeed through the crawlspace to power the new garage panel.
Also heard as
- feeder
Related terms
Tub
Empty panel enclosure, the steel back box that goes in at rough-in before the interior and cover arrive.
MLO
Main lugs only: a panel with no main breaker, fed through lugs from a breaker or fuse somewhere upstream.
Home run
Part of a circuit running from the first box back to the panel, or the arrow on a drawing that shows it.