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Double check my timer switch install please

famous187

Active member
Joined
Nov 22, 2014
Messages
29
Location
Evansville, IN
So basically I removed a dimmer switch that controls my porch lighting with a timer switch. There are two other switches in this same box, all for other exterior lights. There is alot going on in there! Here is a pic:



The dimmer switch I removed is on the right hand side. It had a black wire connected from the previous switch which was also pigtailed from the first switch on one connection and the other side had another black wire going out. There is a set of white neutral wires twisted together behind all of this.

Here are the timer instructions:



So i assumed that the LINE wire was the black wire pigtailed from the other switches and I connected it to the black wire of the switch. The LOAD I assumed was the other black wire so I connected it to the blue wire. The white wire I connected to the other set of neutral white wires. I switched the breaker back on and everything works perfect. My only question is, could I have accidentally hooked the black wires up backwards and it still work?

Thanks
 
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n8n

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Joined
Mar 11, 2014
Messages
3,607
Location
Curtis Bay, MD
probably not, and if the wires were pigtailed from the other switches unless there's something really hinky going on there you got it right anyway.

If you want to be 100% sure of your wiring, disconnect the "load" side and measure the "line" side to ground, should read ~120VAC. If so, then you for 100% sure got it right.
 
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_Dock_

Well-known member
Joined
Jan 10, 2011
Messages
169
Location
Ky
I don't see a wire on the timer's neutral terminal. That's interesting...

I think that's still the dimmer in the switch box, I think this is before he put the timer switch in?

You have it correct, the line (from the breaker) comes in on the first switch. Make sure you wire nut the neutral in the box.

The ground wires (bare copper) should be pushed back in the box further or cleaned up. If they touch any of the line sides of your switches the breaker will trip or if they touch the load side with the switch on the breaker should trip.

If you are using a metal face plate then i THINK by NEC the switches need to be grounded, I don't do much residential other then my own house so im not exactly sure on that one
 
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famous187

Active member
Joined
Nov 22, 2014
Messages
29
Location
Evansville, IN
thanks guys , that was a before pic so that is the dimmer switch. the neutrals have a nut on them , i just snapped a pic after i removed it.
 
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