Equi=Core Hum & Other Issues

@ lowrider57

I agree with testpilot and lak , send the unit in for repair.


As for measuring DC on the mains. You cannot measure DC on the mains by connecting a regular DVM directly across the AC mains at the wall outlet. You would need to connect a low pass filter between the DVM leads and the wall outlet.
The Klien tester you bought is not a DVM by the way.

I know this is becoming a long thread, but I must mention that the Equi=Core now trips the breaker at the panel when powered on. It trips several times in a row, eventually allowing power-up. This is a 20A dedicated line from a subpanel which I’ve had for years.

Stop using the Equi=Core..... Get it repaired.

You need to hire an electrician to have the 20 amp breaker in the electrical panel replaced. That is a must!... Repeated tripping and resetting of the breaker has damaged the thermomagnetic trip unit in the breaker. In many cases the breaker just gets weaker, will trip with less of a connected load than the 20 amps it is rated for and or will not be able to handle inrush current that the breaker used to be able to handle before the repeated tripping and resetting of the breaker.

Worse case that could, can, happen now if it trips due to a high inrush current or a short circuit event of the Equi=Core unit the 20 amp breaker in the electrical panel will not trip when you try to reset it again and the breaker may explode causing major damage to the electrical panel but may also explode outward through the front of the breaker casing burning your fingers, hand, arm, and possibly your face and eyes.
Yes a defective 20 amp breaker could, can, do that........

You should never face,look, at a circuit breaker when resetting a tripped breaker. Always turn your face away from the breaker and electrical panel when pushing the breaker handle back to the ON position. In fact your body should not be in front of the electrical panel. You should be off to the side with your arm and hand extended. 

Jim

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Thanks @lak  for that valuable information.

@almarg , I've been reading that thread.
The Klein device does register 120VAC, but the Overload LED is lit. The polarity LED's indicate normal AC, maybe the overload is due to high DC. Overload is >25vDC.
And I know not to use a multimeter, that's why I bought this device. Thanks.

@jea48 , I think I should call the electrician to address the breaker situation. The 20A breaker being tripped at every powerup has never happened before this week.
Would he be able to measure DC offset?

I should mention that this unit is one year old and was purchased used. It was manufactured by Core Power Technologies.

I'm thinking that I should start with a call to my electrician before sending the unit for service. 
I wonder if a DC blocker can be installed in this conditioner as it is in my amp.
Thanks everybody.

Equi=Core and Core Power Technologies are the same company.

@testpilot , true, but not anymore. Core Power Technologies is out of business and has been purchased by Underwood. All new sales and R&D are done at a new facility.