Lighting Power Density

Target watts from area and occupancy class using public engineering benchmarks.

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Formula and source

Total lighting power = area × W/ft² benchmark; benchmarks compared to NEC 220.12 unit loads and IECC C405 / ASHRAE 90.1 LPDs.

NEC 2023 (NFPA 70). Section 220.12; IECC 2021 Table C405; ASHRAE 90.1-2022 by name.

Audience

This tile is built for electricians and the adjacent professions in the Electrical group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.

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