2015 Fuzion, when plugged into 50 amp shore power I am not getting power to most appliances (but bedroom AC will run). When using 50/30 adapter I can power the AC and all appliances normally. When running on generator power all works normally. Any idea why I am only getting partial power on 50 amp shore power?

stro1965 wrote:2015 Fuzion, when plugged into 50 amp shore power I am not getting power to most appliances (but bedroom AC will run). When using 50/30 adapter I can power the AC and all appliances normally. When running on generator power all works normally. Any idea why I am only getting partial power on 50 amp shore power?Start at the shore power with a volt meter. Measure 240 volts L1 to L2. 120 volts L1 to neutral and L2 to neutral. Measure every connection back to the main breaker. IN THAT ORDER.

Do you have an inverter to power parts of the rig? It could have a tripped breaker.Is the rig fitted with an energy management center? It could be set to thirty amp.Are you sure the source has 120/240 output. Test as described by previous poster.

Thanks, I’ll have to get a volt meter

Working with adapter would show to me that the source is bad. Try resetting the circuit breaker at the source panel.

Sure sounds like one leg of the 50 amp is not there or your plug or somewhere back from there is open. Such as a breaker on your own AC panel.Cavie has it nailed. You need a voltmeter. Everyone that owns an RV should learn how to use a voltmeter with confidence. They really are quite simple, but very confusing with all those weird symbols.I told my brother to take pictures of his as I was teaching him. He did not nor did he mark his voltmeter to remember what position to put it on. I will be putting on a class again for him and he will take pictures.

50 amp shore power issue | Good Sam Community

enblethen
Nomad
Jun 14, 2020
Thanks for the update!
time2roll
Nomad
Jun 14, 2020
Glad to know it is fixed and your RV is just fine ;)
stro1965
Explorer
Jun 14, 2020
Against all odds, it appears that I must have had faulty power at the pedestal on 2 consecutive outings at different campgrounds. The pedestal has been repaired and all is well now. Thank you everyone. I’m glad I didn’t bet on this one, I’d have lost.
cavie
Explorer
Jun 13, 2020
dedmiston wrote:
Any difference when you run your gen?

see post #1
dedmiston
Moderator
Jun 13, 2020
Any difference when you run your gen?
bdpreece
Explorer II
Jun 13, 2020
Another possibility would be a loose wire in the power transfer switch. With the RV disconnected from power, open the power transfer box and inspect and tighten every wire connection.
enblethen
Nomad
Jun 13, 2020
System would not work with adapter fit is your rig. Although one slight possibility that there is a loose wire in shore power cord at pedestal end and by using the adapter it makes contact (doubtful)
stro1965
Explorer
Jun 13, 2020
I realize that. Like I said, I’ll have to pick up a volt meter.
cavie
Explorer
Jun 13, 2020
cavie wrote:
stro1965 wrote:
I really doubt it’s the pedestal, this happened last time out and I assumed that time it was the pedestal. I’m thinking one leg isn’t working but I’m about as far from an electrician as is possible.

It does not matter what you doubt, To diagnose electricity you must start at the source. That is the PED. It is the base line, Sit down with a volt meter and You tube. We can not measure your voltage over the internet.
cavie
Explorer
Jun 13, 2020
stro1965 wrote:
I really doubt it’s the pedestal, this happened last time out and I assumed that time it was the pedestal. I’m thinking one leg isn’t working but I’m about as far from an electrician as is possible.

sit down with a volt meter and You tube. We can not measure your voltage over the internet.

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