How Many Amps Does a Bathroom Exhaust Fan Use?
Bathroom Exhaust Fan draws about 0.3 amps at 120 volts (30 watts running). At 0.3 A, a bathroom exhaust fan fits comfortably on a standard 15 A or 20 A household circuit.
Amps = watts ÷ volts. Enter the wattage from your appliance's nameplate or label for an exact figure.
Current draw — a bathroom exhaust fan
0.3 A
- At 120 V
- 30 W
- Typical breaker
- 15 A
Breaker figure is guidance for a simple resistive load — confirm against the nameplate and a licensed electrician.
Bathroom Exhaust Fan amperage at 120 V and 240 V
Same 30 W load — the current halves when the voltage doubles. Bathroom Exhaust Fan is typically a 120 V appliance in US homes.
| Draw | Watts | Amps at 120 V | Amps at 240 V |
|---|---|---|---|
| Running | 30 W | 0.3 A | 0.1 A |
Breaker and circuit for a bathroom exhaust fan
At 0.3 A, a bathroom exhaust fan fits comfortably on a standard 15 A or 20 A household circuit. For a dedicated circuit, guidance is a 15 A breaker with 14 AWG copper (75°C terminations).
Guidance only — actual circuit sizing depends on your unit's nameplate, wire run length, and local code. Confirm with a licensed electrician. See the wire & breaker size chart for the full NEC ampacity table.
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