NEC 2026 Compatible
What is the minimum size copper grounding electrode conductor required for an ungrounded system with 250 kcmil copper ungrounded conductors, connected to a metal underground water pipe electrode?
Journeyman Level📋 NEC Table 250.66Grounding Electrode Conductor Sizing
A
No. 4 AWG copper
B
No. 6 AWG copper
C
No. 2 AWG copper
D
No. 1/0 AWG copper
Explanation & Direct Citation
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