Planning result
Planning only. An electrician must verify code, conductors, breaker type, connectors, inrush, voltage drop, phase balance, and nameplates.
Why it matters
Small mistakes in fixture watts, voltage, power factor, or available circuit load multiply when several fixtures share a circuit.
How to use it
- Enter fixture wall power, operating voltage, and power factor.
- If the exact fixture lists input amps, use that as the override.
- Enter breaker size, the allowed circuit load, and any other amps already on the circuit.
- Optionally enter the fixture count you want to check.
Cannabis best practices
- Do not assume the default 80% is correct for every installation; use the electrician’s approved value.
- Use the specifications for the exact fixture and driver configuration.
- Have an electrician check wiring, connectors, inrush current, voltage drop, and phase balance.
Limits and sources
This is single-phase planning math. It does not determine code compliance, wire size, breaker type, panel capacity, or three-phase design.
Sources
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