Controls Energy

Single-phase Lighting Load Calculator

Estimate diversified single-phase lighting watts and current against an entered circuit rating.

Lighting calculator Controls Energy Updated August 26, 2026

Inputs

Results

Connected load -- W
Diversified load -- W
Estimated current -- A
Within entered circuit rating --
Load status --
Calculation details
Connected load
-- W
Diversified load
-- W
Estimated current
-- A
Within entered circuit rating
--
Load status
--
Important notes
  • Use actual product wattage, measured power factor, demand assumptions, protective device data, and installation design constraints.
  • This calculator provides planning support only and is not an installation approval or certification.

Formulas

  • \(\displaystyle P_{\mathrm{connected}} = n \times P_{\mathrm{fixture}}\)
  • \(\displaystyle P_{\mathrm{diversified}} = P_{\mathrm{connected}} \times d\)
  • \(\displaystyle I = P_{\mathrm{diversified}} / (V \times PF)\)

Estimate diversified single-phase lighting watts and current against an entered circuit rating.

Single-phase Lighting Load Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.