- Main Breaker
Main Lug Only
Convertible
- Answer should basically say “A double pole breaker is plugged onto two adjacent bus stabs. The circuit is made across both ungrounded legs of the transformer. A single pole breaker is plugged onto a single bus stab. The circuit is made from an ungrounded leg of the transformer to the transformer’s grounded leg.”
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- Any four of the following:
Indoor or outdoor installation?
If indoor, flush-mount or surface-mount?
Service entrance panel or a distribution panel?
Single-phase, three-wire system or a three-phase, four-wire system?
What type of main, Main Lugs Only or Main Circuit Breaker?
Main ampere rating?
What type and rating main breaker is required? (if applicable)
How many branch breakers required, and the rating of each?
How many spaces are required?
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