FIG. 00 — IN PROGRESS
GROUNDING CONDUCTOR CALCULATOR
Size the Equipment Grounding Conductor (EGC) for a given branch circuit or feeder per NEC Table 250.122. Different from the Grounding Electrode Conductor (GEC), which is sized per NEC Table 250.66.
⚠ STATUS · TOOL UNDER FINAL VALIDATION
We're finalizing this calculator's NEC validation. In the meantime, use the conduit fill calculator and the wire fill chart on the homepage.
FIG. 01
WHAT THIS TOOL WILL CALCULATE
- 01Input: rating of overcurrent protection device protecting the circuit (15A, 20A, 30A, 60A, 100A, 200A, 400A, …)
- 02Output: minimum EGC size in AWG for copper and aluminum, per NEC Table 250.122
- 03Applies NEC 250.122(B) upsizing rule when conductors are run in parallel or upsized for voltage drop
- 04Distinguishes EGC (250.122) from GEC (250.66) — separate tools for the two distinct conductors