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Old 06-09-2018, 06:56 PM   #1
wiredgeorge
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Parallax 6345 power converter

We have had our 2002 Keystone Cougar 5ver (27 ft) for about a year. No issues with the Parallax 6345 power converter till the last time out. It is the original and is 16 years old.



Camping this last weekend, temps were in the triple digits for the four days at the RV park. We have a 30A shore power service and the power converter is 45A.



During the hottest times of the day, the main and A/C fuses tripped often. No bueno. Feeling these breakers, they were HOT. I did some research and found some guy camping in Arizona under similar temps had the same problem and when he directed a small fan at the open power converter in his trailer, the circuit breaker popping issue stopped. I directed a small fan at our power converter and the breaker issue also stopped.



I suspect either the fan is dead OR there is a 140 degree thermostat that kicks the fan on may have died. In any case, when I get the time, I will check the fan and probably replace the thermostat; might even put a small 110V muffin fan in to supplement cooling. The Parallax company seems to have morphed into Magnetek but they are selling the same units (6300 series) under both names.



If yours breakers pop under higher temps, this note may be of some use.
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Old 06-09-2018, 07:18 PM   #2
JRTJH
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If the circuit breakers are hot, I'd suspect a low voltage condition which causes increased amperage flow. With triple digit temperatures, chances are that everyone in the campground is running as many air conditioners as they have on their roof, making an even greater demand on the campground grid.

While there may be some problems with old circuit breakers and cooling fans, my first suspicion would be low voltage input to the trailer.
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Old 06-09-2018, 07:29 PM   #3
chuckster57
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Quote:
Originally Posted by JRTJH View Post
If the circuit breakers are hot, I'd suspect a low voltage condition which causes increased amperage flow. With triple digit temperatures, chances are that everyone in the campground is running as many air conditioners as they have on their roof, making an even greater demand on the campground grid.



While there may be some problems with old circuit breakers and cooling fans, my first suspicion would be low voltage input to the trailer.
I am thinking the same thing. Without any kind of EMS you’ll never know what the voltage is coming into the trailer.
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Old 06-10-2018, 05:26 AM   #4
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If you have a Volt/Ohm Meter (multi-meter), you can check your RV voltage.

If you want more capability, a "P3 International P4460 Kill A Watt EZ Electricity Usage Monitor" (without getting into a full blown EMS) plugged into any of the RV's AC outlets will allow you to continually monitor the Voltage coming into your RV...~$18 on ebay.

Yes I agree, low voltage equates to higher current (amps). Higher current equates to HEAT (not good)!

Mike
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