Bypass pressure switch pump runs. Don't bypass pump wont run. 3rd new switch

[George Byron]

Hi all.
As title says, i can bypass my pressure switch by hooking up my main power wires to the pump wires and the pump runs fine. Hook the pressure switch up and nothing. I have 120V on both legs coming in but 0 on the pump side of switch. Contacts 'appear' to be closed aswell.

After the 3rd new pressure switch i figure there might be something else going on. Any ideas?

Pump is an

Everbilt
3/4 HP Submersible 2-Wire Motor 10 GPM Deep Well Potable Water Pump

And the switch is

Square D 40/60-PSI Plastic Exterior Pressure Switch

Incase it matters.

Thanks

 

[Reach4]

I have 120V on both legs coming in but 0 on the pump side of switch. Contacts 'appear' to be closed aswell.

What is the voltage between the incoming legs? That would be between #1 and #4 in the diagram if your pump is wired this way.

If 240 volts, what voltage do you get from #1 to #2, and what voltage do you get from #3 to #4,

 

[Sponsor]

 

[George Byron]

New development :/
I checked the wires when bypassing and just running the pump and they were reading 238ish across both hots.
Re-wired up the pressure switch, turned breaker back on it tripped and fused the contacts on the incoming side of the pressure switch.

 

[Valveman]

Like Reach says, you could have 120 on both legs and not have the 240 on 1 and 4 as needed.

 

[Valveman]

New development :/
I checked the wires when bypassing and just running the pump and they were reading 238ish across both hots.
Re-wired up the pressure switch, turned breaker back on it tripped and fused the contacts on the incoming side of the pressure switch.

Then you most likely have a direct short some where.

 

[George Byron]

I am trying to understand how it runs fine without the pressure switch but not with it though. The breaker didn't trip while bypassing.

 

[Valveman]

You got a wire in the wrong place some where. Maybe post a pic of the pressure switch wiring.

 

[George Byron]

*groans* Never mind guys. Reachs picture says it all. My numbers got faded on my wires and i hooked the 2 lines from the main to 1 and 2 and the 2 wires from the pump to 3 and 4

Sorry for wasting your time BUT thanks for the help and replies....off the Lowes AGAIN

 

[George Byron]

Well, waddya know! Seems when you wire shit up the right way it doesn't go bang fizzle
Thanks again for the help guys.