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AssuredElectrical, Master Electrician
Category: Electrical
Satisfied Customers: 4241
Experience:  Contractor-42+ Years in the ElectricalTrade
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I need help with wiring a intermatic gm40av timer for pool

This answer was rated:

I need help with wiring a intermatic gm40av timer for pool pump. I have wiring diagram but can't make out what is says. 220 volt pump now on 220 volt switch. Want to add timer

AssuredElectrical :

Welcome. My name is XXXXX XXXXX would be glad to assist.

AssuredElectrical :

Do you have the instruction sheet? What part is it needing assistance?

Customer: Have diagram only
AssuredElectrical :

Ok, so what wires do you have for power?

Customer: Have l1 and l2 for 220 voltage
AssuredElectrical :

Ok, so connect L1 to the terminal L1, connect your L2 to the terminal L2/N

Customer: Timer has diagram as follows from left to right, l1, l2, nc,no,com, nc2, no2, com2
Customer: All with terminal screws below letters
AssuredElectrical :

I have all manuals and instructions, thanks

AssuredElectrical :

connect your L1 power to the terminal L1, connect your L2 power to the terminal L2/N

AssuredElectrical :

Is your power cable a black and white wire with 220 volts?

Customer: I understand the incoming feed goes to l1 and l2, but where does out feed off timer to pump connect
AssuredElectrical :


Customer: 2 reds
Customer: Loose wires in conduit
AssuredElectrical :

Ok, one Red to L1 and One to L2.--------------------------------------- Then, Take a short wire around 6" in length, connect it also to L1 and then to COM terminal, make another jump[er wire 6" long and connect to L2/N and then the other end to COM2.

AssuredElectrical :

Now, take your 2 wires to your pump, connect 1 to the NO terminal, then the other one to the NO2 terminal

AssuredElectrical :

That will get it going

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