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Old 06-16-2010, 03:00 PM   #1
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Mechanical timer wiring?


I have attached a PDF file of the wiring schematic for a mechanical timer I purchased for my pool motor. The top circled diagram shows the configuration I am using (Timer and Load, same voltage wired as single throw). The bottom half of the picture is a sketch of how I have the timer wired as far as hot (black) and neutral (white) are concerned. The timer works fine but my question is: Do I have the timer wired properly as to the black and white wires, or should I reverse the colors, or does it make any difference? After looking at the diagram as compard to the wiring for a light switch, it seems to me that I should reverse the wiring as it relates to hot and neutral. FYI, I have the ground wires from the line and the motor wire nutted together since there is no ground screw in the timer box. The timer is the Indoor/Outdoor Time Switch, Model #59396, made by Coleman Cable, Inc. Thanks in advace for your input.
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File Type: pdf Timer wiring.pdf (37.5 KB, 986 views)

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Old 06-16-2010, 03:09 PM   #2
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Mechanical timer wiring?


You need to reverse white and black. As it is now, you are switching the neutral which can be dangerous. If the timer box is metal, there should be some type of ground attachment.

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Old 06-16-2010, 03:10 PM   #3
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Mechanical timer wiring?


You are switching the neutral wire. The white and black should be reversed so that the black wire goes through the contact on the right side.
Unless this a 240 volt line. Then it doesn't matter. Both lines are hot.
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Old 06-16-2010, 03:19 PM   #4
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Mechanical timer wiring?


Thanks guys. I thought that was probably the case. For what it's worth, the timer box (enclosure) is plastic and the instructions say the box does not have to be grounded, so I just wire nutted the ground wires together.
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Old 06-16-2010, 03:30 PM   #5
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Mechanical timer wiring?


If this is permanent, do you have it on a GFCI circuit?
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Old 06-16-2010, 09:57 PM   #6
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Mechanical timer wiring?


Yes it is on a GFCI outlet.

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