---
kind: "section"
citation: "30 C.F.R. § 77.902-1"
title: "30"
number: "77.902-1"
heading: "Fail safe ground check circuits; maximum voltage."
url: "https://uscodex.org/cfr/30/77.902-1"
---

# §77.902-1. Fail safe ground check circuits; maximum voltage.


The maximum voltage used for ground check circuits under [§ 77.902](/cfr/30/77.902.md) shall not exceed 40 volts.


## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 36 FR 9364, May 22, 1971, unless otherwise noted.