---
kind: "section"
citation: "30 C.F.R. § 75.706"
title: "30"
number: "75.706"
heading: "Deenergized underground power circuits; idle days—idle shifts."
url: "https://uscodex.org/cfr/30/75.706"
---

# §75.706. Deenergized underground power circuits; idle days—idle shifts.


When not in use, power circuits underground shall be deenergized on idle days and idle shifts, except that rectifiers and transformers may remain energized.


## Notes

### Authority

Authority: 30 U.S.C. 811, 813(h), 957.

### Source

Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.