Sources & standards
The technical guidance on this page reflects these published codes and standards, which your local authority (AHJ) adopts, amends, and enforces. It is educational, not engineering or legal advice — confirm the current requirements for your jurisdiction.
Commercial kitchen wiring is governed by the National Electrical Code (NEC) as adopted and
amended by your local authority. This is a plain-English overview — the actual design and permit must come from a
licensed electrician.
Rule of thumb: gather every appliance's nameplate voltage, phase
and amps, hand the list to a licensed electrician, and pull a permit. Guessing here fails inspection and trips breakers on
opening day.
Frequently asked
Does commercial kitchen equipment need special outlets?
Often yes. Many commercial appliances need a dedicated circuit and may run on 208V or 240V, single- or three-phase — not a standard 120V wall outlet. Match the building's electrical service to each unit's nameplate before buying.
What's the difference between single-phase and three-phase?
Single-phase power is typical of smaller spaces; three-phase delivers more power efficiently to large equipment and is common in bigger commercial buildings. Some heavy equipment is offered in both — order the version that matches your service.
Do commercial kitchens need GFCI outlets?
Yes — GFCI protection is required for receptacles near sinks and other wet locations. Your electrician will place them per the NEC as adopted locally.
How many amps does a commercial refrigerator use?
It depends on the model — read the amperage off the unit's nameplate/data plate and size the circuit to that. Don't estimate; the plate is the number your electrician needs.