Quote:
Originally Posted by forgop
I'm attaching this sketch of how the wires go into the switch box.
3 wire sets-
Set 1 has a red/black/white/ground
Sets 2 & 3 have a black/white/ground
Light switch has red from set one and black spliced from sets 2 & 3
Fan switch has black from set one and black spliced from sets 2 & 3
Whites from wire sets 1, 2, and 3 are spliced/capped
Grounds from wire sets 1, 2, and 3 are grounded to one another.
So, when it comes to the black wire from the outlet box not accounted for in my installation instructions, the red is obviously a hot for the light, so is there any harm in tying in the hot for the fan?
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So, is the set-up thus: Two plug/outlet boxes and a one double switch box?
That's what I pick up from the drawing. It looks like the following is taking place. All blacks basically connect from outlet boxes and to fan and light common legs on the common leg on the power leg that feeds the outlet box(s). Of course, all grounds are together. The hot leg (White) is connected together between the outlet boxes, with a leg from the hot leg bundle free free in the switch box (to feed the power to the switches for fan and light - there are two switches, right?) So, there is one power leg into the switch box, and two "switched" legs out of the switch box to the fan.
Assuming this is correct, the past set-up had to have a hot leg between the two switches to bring the power from the white into both switches. When each was switched on, one sent power up the white to fan unit, other sent power to the red wire to fan unit.
I'm not sure why you have a black (common) from the outlet box unaccounted for. The commons should be all tied together, with an unswitched leg running to the common on the fan. That leaves either, or both the white and the red available to be the "switched" leg to the new fan unit. If you can separate out the two hot lines in the fan unit, then you can tie the white hot leg into the switch to two switches, then feed the fan and the light's hot legs from the red and the white leads.
Make sense? Or even answer your question?