No Power at Irrigation Pump

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  #1  
Old 08-05-15, 07:48 PM
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No Power at Irrigation Pump

My irrigation pump was running fine until it tripped my breaker twice over the course of a few days.

Now it won't turn on at all.

The power is on a dedicated circuit, dual pole 20amp. It comes out of the box to a switch and then in the ground and to the pump.

I used a meter to test the voltage at the pump and it is zero. At the switch, it is a constant 240.

Is it possible to have power at the switch, but no power at the pump and have a happy breaker?

If their is a short in the ground, wouldn't the breaker stay popped?

Thanks in advance.
 

Last edited by Doug Gast; 08-05-15 at 08:18 PM.
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  #2  
Old 08-05-15, 08:05 PM
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It could have shorted & disconnected somewhere.
 
  #3  
Old 08-05-15, 08:17 PM
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So a short (perhaps a literal ground) would not permanently pop the breaker?
 
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Old 08-05-15, 08:24 PM
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How did you measure voltage?
 
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Old 08-05-15, 08:39 PM
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Did you check for voltage on both sides of the switch ?
 
  #6  
Old 08-05-15, 10:03 PM
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I checked the voltage with a volt meter. The switch on both sides measured 240 when on, zero on one side when off. When I checked the pump (at the connection) I got zero or nothing. At the pump I checked the wire itself as well as the connections.
 
  #7  
Old 08-06-15, 07:23 AM
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If you have 240 volts it isn't the breaker. Does it run if you bypass the switch.
 
  #8  
Old 08-06-15, 09:54 AM
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I checked the voltage with a volt meter. The switch on both sides measured 240 when on, zero on one side when off. When I checked the pump (at the connection) I got zero or nothing. At the pump I checked the wire itself as well as the connections.
I'd replace the wiring between the switch and the pump.
 
  #9  
Old 08-06-15, 03:17 PM
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Sounds like the wiring between pump and switch,is it in pipe?it could be a high resistance ground in which case it may not trip the breaker.
Geo
 
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