Federal regulations · Through 2026-08-25 · Newer source version available

30 CFR 75.601-3: -3 Short circuit protection; dual element fuses; current ratings; maximum values.

Where this section sits in the code

Title 30—Mineral Resources
CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
SUBCHAPTER O—COAL MINE SAFETY AND HEALTH
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart G—Trailing Cables

Dual element fuses having adequate current-interrupting capacity shall meet the requirements for short circuit protection of trailing cables as provided in § 75.601, however, the current ratings of such devices shall not exceed the maximum values specified in this section:

Conductor size (AWG or MGM) Single conductor cable Two conductor cable

Ampacity Max. fuse rating Ampacity Max. fuse rating

14 15 15

12 20 20

10 25 25

8 60 60 50 50

6 85 90 65 70

4 110 110 90 90

3 130 150 105 110

2 150 150 120 125

1 170 175 140 150

1/0 200 200 170 175

2/0 235 250 195 200

3/0 275 300 225 225

4/0 315 350 260 300

250 350 350 285 300

300 395 400 310 350

350 445 450 335 350

400 480 500 360 400

450 515 600 385 400

500 545 600 415 450

Collected 2026-08-27T02:25:24Z. Source file · JSON

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