1. LawStack
  2. Title 30 - Mineral Resources
  3. Chapter I - Mine Safety and Health Administration, Department of Labor
  4. Subchapter O - Coal Mine Safety and Health
  5. Part 77 - Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines
  6. Subpart J - Low- and Medium-Voltage Alternating Current Circuits
  7. 30 CFR § 77.901-1
30 CFR § 77.901-1
Grounding resistor; continuous current rating
May 28, 2026
CFR

§ 77.901-1 Grounding resistor; continuous current rating.

The ground fault current rating of grounding resistors shall meet the “extended time rating” set forth in American Institute of Electrical Engineers Standard No. 32.

Previous
§ 77.901 Protection of low- and medium-voltage three-phase circuits
Next
§ 77.904 Identification of circuit breakers

Tried the LawStack mobile app?

Join thousands and try LawStack mobile for FREE today.

  • Carry the law offline, wherever you go.
  • Download CFR, USC, rules, and state law to your mobile device.

Designed and built by Tekk Innovations LLC, the makers of the LawStack iPhone app or Android app.

© 2020 Tekk Innovations LLC