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voltage in back of breaker panel in coach
there are buss bars at the back of the breaker panel that the breakers are getting the AC from for power they are like solid copper bars. there are also some solid copper buss bars that are some type of ground bars that are in the same area. when i test accross the hot buss to the ground i only get like 91 to 92 volts when i get ground from the pile of grounds at the floor and power from the hot buss bar i get 125volts. there is one nice size green wire that goes from one ground buss bar to the other but i cant see any ground wire that might come from another place down under like from the charger inverter bay or the transfer box. some of the green ligts beside the breakers are dim but one crusair will sometimes go off with AC LO flashing. Has anyone had this happen ?
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2 Replies
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Never had the condition you describe. Some electrical testers will read low because they are not true RMS testers.
On a previous coach I had a circuit go bad and when I accessed the rear of the panel I found some screws needed tightening and I noticed some loose ones had some evedence of heat due to the lack of tighness.
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I had one of our Cruisairs frequently shut off with AC LO despite having good voltage. Turns out the circuit that Cruisair uses to check voltage can be calibrated by the user. I don’t have the manual handy, but you enter setup mode on the panel and adjust the voltage it sees until it matches what your meter is showing. Mine no longer trips.
Gerald
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