I am currently using a turn knob switch for light bulbs to enable and disable a buzzer. I think the buzzer runs at 12 volts and draws a few amps. Is this safe?

Unless I'm told otherwise my basic understanding is that at that voltage and current I am within the wattage range of typical bulbs. I'm open to being told I'm wrong.

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    Is the buzzer running on AC or DC? Most switches must be greatly derated in current for DC as there is no zero-crossing to stop the arc. If AC then OK; DC maybe not. – DoxyLover Apr 12 '15 at 3:57

Perfectly safe. Lower wattage can always be put thru a switch capable of handling higher wattage.

| improve this answer | |
  • +1 Safe, but not always functional. Some switches rely upon higher wattages running through them to function... which is why some timers fail on high efficiency led bulbs. – Matthew Apr 12 '15 at 3:05
  • True, but since that wasn't the question being asked I decided to keep things simple. – keshlam Apr 12 '15 at 3:08

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