Main Device / Incoming Lug Configuration
Main Breaker
Select the main breaker amp independently from bus amps. Main breaker cannot exceed bus rating.
Select Main Breaker Features+
None selected
Main Lugs / Incomers
Configure phase, neutral, and ground lugs plus number of incoming cables. The app checks NEC-style install rules: ampacity, parallel conductor minimum size, lug cable count, neutral, ground, OCP, and bus rating.
Auto Sizing Recommendation
Select bus/main/lug data to calculate recommendation.
One-Line Diagram Preview
Diagram is preliminary for RFQ and submittal coordination. Final conductor sizing must be reviewed against project conditions, temperature, conduit, derating, terminal ratings, utility/AHJ requirements, and manufacturer data.