New Booster Pump and Tank. Booster won't start??

I just installed a storage tank and booster pump at my house. The booster pump won't run. I need some wiring help. I am using a standard pressure switch to control the booster. There is no pressure on the system so the contacts on the switch are closed. I have a 20amp double pole breaker that I am using to power the pump. The pressure switch is connected to the breaker with a red and black wire and ground. The pump is wired to the pressure switch with a red and black wire and ground. The terminals on the switch are wired so that the contacts complete the red/red and black/black connections. The booster pump is a Goulds GB. It is wired for high voltage from the factory. I connected the red and black wires to terminals 1 and 4 as shown on the motor's diagram. The ground is connected to the green terminal. Why won't my pump start?

Thanks,

Do you own a multi meter? Measure the voltage at the places you've mentioned.

High voltage, you mean 240 vac?

Rancher

I checked the voltage from ground to the terminals and I get 125V on each terminal. I have a feeling one of the Legs is not working, but I thought that maybe each would add together to make 250V. Am I wrong?

Tom

Only if they are on different phases. If you selected two breakers and took 115 from each one, you could be using the same source for both. But I think you said you have a double pole breaker.

Does the pump humm or buzz or is it just quiet when power is applied?

bob...

Wiring was all good. It was a bad breaker. One of the legs was dead. Thanks for the tips.

Tom