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prout35 on Fri, 01/25/2013 - 12:28 (updated 01/25/13 - 01:44)
Replacing dimmer. Old dimmer has two black wires attached to two white wires in box. There are two black wires in box not attached to dimmer but wire-nutted together. Is it ok to wire the new dimmer switch the same way?
Both the black wires, which are nutted together, are hot all the time. If the switch is on (light turned on), neither of the white wires is hot. If the switch is off (light turned off) one white wire is hot, the other white wire is not hot. (to repeat: the two white wires are nutted to the two black wires from the dimmer switch.)
Old dimmer works. New one has higher capacity.