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Topic: Electrical Problem (Read 643 times) previous topic - next topic

Electrical Problem

Hello!  I have a question in my 93 U300 there is one breaker that immediately trips when you flip it on.  I had my RV tech check it out and the wires go into the manual transfer switch.  He isolated the wire removed the hot wire from the wiring block inside the transfer switch and the breaker then stays on. All the electrical outlets appliances etc work fine and always have.  The tech seems to think that when you flip the breaker on its overloading the circuit like double power to it I am guessing power through the inverter and power from the shore power?  Any Ideas?

Thanks,
Woodie
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Electrical Problem

Reply #1 –
Quote from: leejrfla –
1.  He isolated the wire removed the hot wire from the wiring block inside the transfer switch and the breaker then stays on.
2.  The tech seems to think that when you flip the breaker on its overloading the circuit like double power to it I am guessing power through the inverter and power from the shore power? 

Woodie,

1. This would lead me to think that you have a failure in the transfer switch causing a fault.
2. I don't understand what you are trying to explain, but if you have power from both the shore and inverter tied together it will cause something to let the smoke out.
Which breaker are you flipping on? Shore pedestal or one in your coach breaker panel

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Electrical Problem

Reply #2 –
Quote from: leejrfla –
Hello!  I have a question in my 93 U300 there is one breaker that immediately trips when you flip it on.  I had my RV tech check it out and the wires go into the manual transfer switch.  He isolated the wire removed the hot wire from the wiring block inside the transfer switch and the breaker then stays on. All the electrical outlets appliances etc work fine and always have.  The tech seems to think that when you flip the breaker on its overloading the circuit like double power to it I am guessing power through the inverter and power from the shore power?  Any Ideas?
Thanks,
Woodie
What breaker is tripping? If you have shore power, the inverter should not be functional. Do you have your coach schematic? We have almost the exact same coach.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)

Re: Electrical Problem

Reply #3 –
Circuit breakers protect downstream wiring.  Too much potential coming in won't make any difference until you have a load downstream that will pull more amps than the CB is rated.  I have replaced two of the skinny CB on my coach because the were tripping for no reason. They can wear (age) out.

from what you describe, maybe a transfer switch.
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Electrical Problem

Reply #4 –
Mike its breaker #5 on the coach electrical panel on the bed pedestal.

Woodie
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Electrical Problem

Reply #5 –
Roger regarding the transfer switch you are referring to the manual one right?

Thanks
Woodie
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Electrical Problem

Reply #6 –
Quote from: Pierce & Gaylie Stewart –
What breaker is tripping? If you have shore power, the inverter should not be functional. Do you have your coach schematic? We have almost the exact same coach.

Pierce

Pierce Yes I have the schematic.

Woodie
Woodie Lee Jr
93 U300. 40'
6V92ta

Re: Electrical Problem

Reply #7 –
Woodie, I am not sure what you have in your coach for a transfer switch, surely different from mine.

If the circuit breaker is on the post and it trips when the manual transfer switch is actuated then it could be the transfer switch or something downstream.. 
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Electrical Problem

Reply #8 –
Electrical trouble shooting boils down to isolating one switch/variable at a time.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake
 

Re: Electrical Problem

Reply #9 –
You might have a bad breaker.
1995 U320 40', 2013 chevy sonic toad, my real love are corvettes have owned 30