Electric Wall heater programmable thermostat

SOURCE: installing timer on existing electrical outlet

Are the wires different colors or is there too many of one and not enough of the other. Your bathroom switch should have black which is hot, white which is neutral, and green or bare which is ground. It should be the same on the timer, but may differ. The instructions should tell which wire or terminal is hot, neutral and ground.

SOURCE: Re: wiring the FV-08VKS1

The black and white in the fan box are the main power and neutral for normal (low speed) of the fan. The two reds are the signal wires. It is basically a switch loop. You will actually need a total of 4 conductors (plus a ground) in order to run the high and low speed of the fan. The four conductors consist of 1) power from one switch to power up the fan, 2) neutral, 3) signal going to second switch, 4) signal going back to fan from second switch in order to run high speed. Without four conductors you can still run the high speed only by tying the two red wires in the fan together. This would be like always having the second swith in the on position. Hope this helps.

SOURCE: Trying to replace Intermatic with Utilitech inwall

The wires on your new switch are intended for black = power .. white = neutral . and red = lights .. with two black wires on the old switch I am assuming that there is a bundle of white wires in that wall box, the white timer needs to join that bundle ... then you need to determine which black wire is the power from the electrical panel ( voltage tester) and connect to the black timer wire .. the red timer wire connects to the other black wire in the wall..

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SOURCE: I bought a Utilitech 7 day digital in wall timer,

HI .. if the switch has only a black and white wire attached, and there are no other wires in the wall box, then you cannot use this timer switch. You need to return it and get a timer that does not use a neutral connection. The wires you have are a switch leg from the light and there is a white wire but it is not a neutral.
If there are other wires in that wall box , tell me and we can chat more about how to remedy this .

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SOURCE: GE digital timer. Instructions say to: 1)

Find the Hot wire:
Your switch has 2 wires. One of these wires is Hot, and one goes to load. Disconnect wires from switch. Turn on power. Do not stand on wet surface. Test each wire to bare copper wire. When tester lights up, that is Hot wire. The other wire goes to load.

Connect wires:
Hot wire goes to Black timer wire
Wire to load goes to Red timer wire
White wire connects to white wires that are twisted together
Bare copper wire connects to Green wire from timer

How to connect white wire to white wires that are twisted together.
a) Strip white timer wire so you have 1-1/2 " of bare wire. Stranded wire will wrap around other wires easily.
b) Remove wire nut. DO NOT UNTWIST wires.
c) Hold all whites together so bare copper lines up. Wrap stranded copper around the twisted wire.
d) Replace wire nut, or use larger wire nut. Twist real tight. Do not use tape. You can solder the connection.
e) When done, pull on white time wire to make sure it is held tight. Push whites back into box.