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Code of Federal Regulations Title 30. Mineral Resources § 30.18.24 Electrical clearances

Current as of January 02, 2025 | Updated by Findlaw Staff

Minimum clearances between uninsulated electrical conductor surfaces, or between uninsulated conductor surfaces and grounded metal surfaces, within the enclosure shall be as follows:

Minimum Clearances Between Uninsulated Surfaces

Phase-to-Phase Voltage (rms)

Clearances (inches)

Phase-to-Phase

Phase-to-Ground or Control Circuit

0 to 250

0.25

0.25

251 to 600

0.28

0.25

601 to 1000

0.61

0.25

1001 to 2400

1.4

0.6

2401 to 4160

3.0

1.4
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Cite this article: FindLaw.com - Code of Federal Regulations Title 30. Mineral Resources § 30.18.24 Electrical clearances - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-30-mineral-resources/cfr-sect-30-18-24/

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