Hello. Occasionally, the breaker inside the house (in the garage) trips. I have not yet found a 100% reproducible cause, but I believe that most of the time it happens right when the Polaris Halcyon PB4-60Q Booster Pump is set to turn on. However, it has happened in other situations, such as while the Polaris had already been running for some time, or right when it was set to turn off. I believe I also saw it happen when the Polaris was not running at all (I had turned off the Polaris breaker in the subpanel), but I think that's rare.
I'm fairly certain this issue started happening after we installed the CircuPool SWG, so I'm wondering if the breaker is being overloaded.
I've attached photos of the subpanel and inside panel. The booster pump is running at 115V, and the manual says that the starting current may exceed 15 amps, so they recommend a 20A service breaker for the pump. According to the subpanel, it is hooked up to a 20A breaker. What I'm not sure of is whether those 2 breakers in the inside panel that both say 20A means the total load is 40A or is it still 20A for all the equipment? Either way, it seems like something is not right because the total in the subpanel is 55A (two 20A breakers and one 15A breaker), or is that not the right math? The 15A breaker is for the light in the pool, but I think it might be hooked up to another box that's beside the pool, and maybe not to the inside panel?
Another theory I had was that it was due to a malfunctioning Intermatic T101R timer that's connected to the Polaris pump. I removed the tripper pins and noticed the ON pin was bent out of shape, and there was melted grease on the mechanism. I thought that perhaps it was getting stuck and couldn't turn the pump on, and it was overheating, and tripped the breaker.
I removed the pins, and after running for some time, it tripped the breaker, which I thought meant the mechanism was getting stuck even without the pins. However, I recently had a brand new mechanism installed, and the problem happened again. The same day the mechanism was replaced, it didn't trip the breaker, but next day, it did. But today it's been fine. It was set to turn on about 45 minutes ago and it's still running.
Any ideas?
I'm fairly certain this issue started happening after we installed the CircuPool SWG, so I'm wondering if the breaker is being overloaded.
I've attached photos of the subpanel and inside panel. The booster pump is running at 115V, and the manual says that the starting current may exceed 15 amps, so they recommend a 20A service breaker for the pump. According to the subpanel, it is hooked up to a 20A breaker. What I'm not sure of is whether those 2 breakers in the inside panel that both say 20A means the total load is 40A or is it still 20A for all the equipment? Either way, it seems like something is not right because the total in the subpanel is 55A (two 20A breakers and one 15A breaker), or is that not the right math? The 15A breaker is for the light in the pool, but I think it might be hooked up to another box that's beside the pool, and maybe not to the inside panel?
Another theory I had was that it was due to a malfunctioning Intermatic T101R timer that's connected to the Polaris pump. I removed the tripper pins and noticed the ON pin was bent out of shape, and there was melted grease on the mechanism. I thought that perhaps it was getting stuck and couldn't turn the pump on, and it was overheating, and tripped the breaker.
I removed the pins, and after running for some time, it tripped the breaker, which I thought meant the mechanism was getting stuck even without the pins. However, I recently had a brand new mechanism installed, and the problem happened again. The same day the mechanism was replaced, it didn't trip the breaker, but next day, it did. But today it's been fine. It was set to turn on about 45 minutes ago and it's still running.
Any ideas?
