# powerline-clearance-uninsulated-over-50-kv — Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)

For powerline-clearance-uninsulated-over-50-kv, paragraph citation is 1926.451(f)(6); type of requirement is minimum clearance from uninsulated power lines; value (imperial) is 10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each 1 kv over 50 kv; applies to is More than 50 kv; regulation section heading is Use, recorded from its source on 2026-08-31; source re-checked 2026-09-14.

- **Requirement ID:** powerline-clearance-uninsulated-over-50-kv _(our reading, not quoted from the source)_
- **Paragraph citation:** 1926.451(f)(6) _(our reading, not quoted from the source)_
- **Type of requirement:** minimum clearance from uninsulated power lines _(our reading, not quoted from the source)_
- **Value (imperial):** 10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each 1 kv over 50 kv _(verified: appears in the quote below)_
- **Applies to:** More than 50 kv _(verified: appears in the quote below)_
- **Regulation section heading:** Use _(verified: appears in its own passage below)_

## What the source says

> Uninsulated lines voltage | Minimum distance | Alternatives | Less than 50 kv | 10 feet (3.1 m) | | More than 50 kv | 10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each 1 kv over 50 kv | 2 times the length of the line insulator, but never less than 10 feet (3.1 m). |

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Regulation section heading

> (f) Use.

## Source

- https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1926/subpart-L/section-1926.451

Last verified: 2026-09-14. Review by: 2027-08-31.
Part of [Every numeric dimensional tolerance and safety factor in OSHA's scaffold general requirements (29 CFR 1926.451)](https://referencesource.org/osha-scaffold-dimensional-tolerances/).