# OSHA: 29 CFR 1910.303

> US workplace electrical marking provisions with applicability limits and exceptions; official indexed text checked September 12, 2026.

Canonical page: https://datacenterlabeling.com/references/s11

Original source: [OSHA: 29 CFR 1910.303](https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.303)

## Scope of this source

US workplace electrical marking provisions with applicability limits and exceptions; official indexed text checked September 12, 2026.



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## Related guidance

- [The supplying circuit or disconnect is unclear](https://datacenterlabeling.com/problems/panel-circuit-disconnect-marking)