I have an intermatic pool timer in my garage next to the circuit breaker board. I can turn on the pump when I manually switch it on with the timer and when the timer is on, I can turn the pump on and off at the pump near the pool. But when the timer turns the pump off, the circuit breaker trips. Any suggestions?
circuit breaker trips when timer turns off
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- Last Post 20 March 2022
Service
posted this
28 June 2017
Hi Tinman,
I sent your question out to one of the engineers at one of the manufacturers and this is what he had to say...
I give it a 99.8% chance it's a Siemens / Pentair GFCI breaker that's installed. When a load such as pump, blower, salt generator or lights are turned off the older model of breaker would trip. And the load might not even be on that circuit. Siemens released their new design in 2016 the QF220A which is a solution. The way you can tell the difference between the 2 is the newer one has a LED on the white "push to test" button. Swapping the breaker for the newer model is one solution. Swapping to another breaker manufacture could be another. If the pump is a variable speed only use the Newer Siemens or the Square D Homeline HoM220GFI. They are 6mA fault sensing Vs the 5 mA models of Cutler Hammer and GE. VS pumps don't like the 5mA versions. Using an Intermatic ET-NF noise filter on that tripping breaker circuit is also a solution and most likely much less expensive.
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BoeingDriver
posted this
20 March 2022
breaking out the defibrillator on this thread...
I registered for the sole reason to publically say THANK YOU to Patrick.
I have had this problem for a few years... each time I would turn off the blower to my spa it would trip the pump GFCI. GFCIs being as tempermental as they are I just chalked it up to BS that must be endured to be safe and rarely used the blower. $127 and 2days later via Amazon Prime, this new breaker has "fixed the glitch"
Huge Thanks to you Patrick!!!
