Panel Load & Sub-Panel Sizer

Tally a panel's connected load and pick the next standard bus rating.

Loads: name, VA (one per line)

Result

Total VA

20300

Demand VA

14120

Recommended bus (A)

About this tool

Plug every breaker load into a panel schedule, apply NEC demand factors, and see whether the next available bus rating fits. Built around r/electricians recurring questions about sub-panel bus ratings and 'is this 100A panel enough?'

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