---
kind: "unit"
title: "10"
title_heading: "Energy"
key: "chII/subchD/part431/subpartP"
level: "subpart"
label: "Subpart P"
heading: "Mercury Vapor Lamp Ballasts"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/10/chII-subchD-part431-subpartP"
sections_count: 3
---

# Subpart P — Mercury Vapor Lamp Ballasts

Title 10 C.F.R. — Energy › Chapter II — Department of Energy › Subchapter D — Energy Conservation › Part 431 — Energy Efficiency Program for Certain Commercial and Industrial Equipment

## Sections

- [§431.281. Purpose and scope.](/cfr/10/431.281.md)
- [§431.282. Definitions concerning mercury vapor lamp ballasts.](/cfr/10/431.282.md)
- [§431.286. Energy conservation standards and their effective dates.](/cfr/10/431.286.md)