---
kind: "section"
citation: "30 C.F.R. § 77.503"
title: "30"
number: "77.503"
heading: "Electric conductors; capacity and insulation."
url: "https://uscodex.org/cfr/30/77.503"
---

# §77.503. Electric conductors; capacity and insulation.


Electric conductors shall be sufficient in size and have adequate current carrying capacity and be of such construction that a rise in temperature resulting from normal operation will not damage the insulating materials.


## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

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