---
kind: "section"
citation: "30 C.F.R. § 7.45"
title: "30"
number: "7.45"
heading: "Critical characteristics"
url: "https://uscodex.org/cfr/30/7.45"
---

# §7.45. Critical characteristics


The following critical characteristics shall be inspected or tested on each battery assembly to which an approval marking is affixed:

- (a) **Thickness of covers and boxes.**
- (b) **Application and resistance of insulating material.**
- (c) **Size and location of ventilation openings.**
- (d) **Method of cell terminations.**
- (e) **Strain relief devices for cables leaving boxes.**
- (f) **Type, location, and physical protection of cables.**

## Notes

### Authority

Authority: 30 U.S.C. 957.

### Source

Source: 53 FR 23500, June 22, 1988, unless otherwise noted.