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100 watts to amps
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0.8 A
100 watts at 120 V · 0.4 A at 240 V
100 watts to amps by voltage
| Voltage | Amps |
|---|---|
| 12 V DC | 8.3 A |
| 24 V DC | 4.2 A |
| 120 V | 0.8 A |
| 208 V | 0.5 A |
| 230 V | 0.4 A |
| 240 V | 0.4 A |
A = W ÷ V (resistive load). Breakers should carry no more than 80% of rating continuously.
FAQ
How many amps is 100 watts?
100 W ÷ 120 V = 0.8 A; at 240 V it is 0.4 A.
Can a 100 W appliance run on a 15 A or 20 A circuit?
At 120 V it draws 0.8 A: fine on a 15 A circuit (12 A continuous limit).
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