StacksVerified U.S. regulatory reference

30 CFR §77.803-2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Ground check systems not employing pilot check wires shall be approved by the Secretary only if it is determined that the system includes a fail safe design which will cause the circuit interrupter to open when ground continuity is broken.