Overcurrent Protection Sizing Calculator

Size overcurrent protection devices for general branch circuits per NEC 240.

Continuous load current.
A
Non-continuous load current.
A
1 if next standard size is allowed per NEC 240.4(B).

Results

Min OCPD Rating-A
Standard Size-A
Min Wire Ampacity-A
References: NEC Article 240; NEC 210.20; NEC 215.3