---
kind: "section"
citation: "30 C.F.R. § 18.23"
title: "30"
number: "18.23"
heading: "Limitation of external surface temperatures."
url: "https://uscodex.org/cfr/30/18.23"
---

# §18.23. Limitation of external surface temperatures.


The temperature of the external surfaces of mechanical or electrical components shall not exceed 150 °C. (302 °F.) under normal operating conditions.


## Notes

### Authority

Authority: 30 U.S.C. 957, 961.

### Source

Source: 33 FR 4660, Mar. 19, 1968, unless otherwise noted.