Mostelectrical code requirementsfor homes are based on theNEC (National Electrical Code).
It is revised every three years (2014, 2017, 2020, etc.
Some homeowners are startled to learn that their existing bathroom wiring does not meet the current code requirements.
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This usually is no cause for worry.
The latest code provides requirements for new construction ormajor remodelingjobs where the bathroom footprint is being expanded.
If you are doing the wiring yourself, consult your local building inspection office for advice.
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Anytime you are remodeling, keep an eye on the current code requirements for new construction.
Bathroom Lighting
The NEC requires at least one permanently mounted light fixture in a bathroom.
This can be a ceiling light, a combination vent fan/light fixture unit, or a vanity area light.
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If you add a light to the shower stall, don’t forget the required protective waterproof lens.
Some communities may require a vent fan even if there is a window in the bathroom.
Abathroom vent fanmust be powerful enough to remove and displace moisture from the room outdoors.
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Vent fans aremeasured in CFM (cubic feet per minute).
Combination and all-in-one fixtures integrate lighting, the vent fan, and a heat lamp or blower-heater.
Depending on the amperage draw of the unit, this fixture may require a dedicated circuit.
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If you have amakeup tableincorporated into the bathroom plan, that’s a great place for an outlet.
Tip
There is no maximum number of outlets for an average-sized bathroom.
The minimum requirement for outlet receptacles in a bathroom is one GFCI-protected receptacle served by a 20-amp circuit.
Most bathrooms have two to five receptacles.
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Browse NEC Adoptions and Electrician Continuing Education Requirements by State.
International Association of Electrical Inspectors.
Explore the NEC 2020.
National Fire Protection Association.
A Brief Guide to Mold, Moisture, and your Home.
United States Environmental Protection Agency.
