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Old 24-05-2021, 16:16   #1
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Join Date: May 2021
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AC Voltage Readings- Isoboost Transformer?
Recently noticed at times my AC voltage will spike up as high as 130-134 volts showing on panel and stay there for a while, I confirmed the voltage at an outlet with a meter. It will also go back to 121-126 for long periods of time.

I believe the high voltage is occurring when the Charles ISOboost transformer is showing it is in Boost mode.

Question is how high is too high and should be concerned? I haven't had any issues with any systems onboard yet.

- I've checked the power on the dock and showing 238-240

- My cord only has two prongs on the male end, and is hard wired in at the boat end. From what I understand this is because of the transformer.

Boat is a Viking Convertible

Thanks!
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