Hi, I have no more power from shore or from the generator. But I have power with the inverter ON. Shore power stoped while microwave was working. The microwave stopped working but TV was still going, then I flicked a couple of circuit braker and the TV quit. I started the inverter and Power was OK with inverter, tv working and all, switched back to shore or genset and no power.I have an IOTA ITS-50R transfer switch. I suspect it would be the transfer switch. Does power from the inverter goes through the transfer switch, I guess yes because there are 3 sets of wires going to the box?Power from the generator goes directly in the transfer box, but power from shore have to be pluged in.Thanks for your help. Going to Mexico this weekend with a bunch of people, need this to work quick. I am in Donna / Mission area, any good shop around here?

Large inverters have their own transfer switch.No inverter power does not go through the transfer switch.Incoming power from genset and shore power goes through transfer switch, then to a branch breaker that feeds the inverter.You could have a partially tripped circuit breaker in the 120 power distribution panel.Is your rig a 30 or 50 ampere shore power?Start by resetting all citcuit breakers. Turn them all off applying light pressure toward off, then turn main breaker on, if equipped, then each branch breaker one a t a time.

More info., I unpluged the shore cord and started the Genset, after a few second, the relays in the transfer box clicked on but there was no power in the RV. I checked the inverter and it was clicking at maybe a 3 to 5 second interval. I stoped the genset and reconnected shore power, no relay engaged and no flickers from the inverter.I have a Xantrex Freedom 458 inverter.

Definitely the Xfr switch. I had similar problem but switch clicked multiple times when energized then died. You can test the input and output lugs to verify if you are familiar and comfortable with electricity.

enblethen wrote:Large inverters have their own transfer switch.No inverter power does not go through the transfer switch.Incoming power from genset and shore power goes through transfer switch, then to a branch breaker that feeds the inverter.You could have a partially tripped circuit breaker in the 120 power distribution panel.Is your rig a 30 or 50 ampere shore power?Start by resetting all citcuit breakers. Turn them all off applying light pressure toward off, then turn main breaker on, if equipped, then each branch breaker one a t a time.Ok, thanks, I have 50 amps power. I did reset all the CB. I checked the transfer box and like you say, I saw 3 sets of wires, one from shore, one from genset and one going out, so nothing from the inverter.Now, something new, I tested the shore power post. When I test it no load, there is power, test ok for ground and earth and I can have my buffer running, but if I plug in my RV power cord, there is a very little clicking sound in the shore post box and power goes off, but the circuit breaker does not trip on the power box.I now wonder if the transfer switch is no good or the post, and / or if the post screwed the transfer switch.

First since you don't seem to be aware of it there was a recall issued for the IOTA ITS-50R transfer switch. Of course since the old Monaco is no more it does not mean much. Find your transfer switch and with the power disconnected open the cover and look for burned/melted wires. If everything looks clean, tighten all connections and try your power again.Recommendations are to replace the IOTA ITS-50R. I say this but, I am still running on mine. I do check it at least once a year though.

No power from shore or generator, ok on inverter, need help

Kidoo
Explorer
Jan 10, 2017
mvpmich wrote:
Definitely the Xfr switch. I had similar problem but switch clicked multiple times when energized then died. You can test the input and output lugs to verify if you are familiar and comfortable with electricity.

Ok, I will check the output on the transfer tomorow, getting late. It is the inverter that flicker when I get the genset running, the transfer switch did flicker once but I do not know if it cliked multiple time as I was on the other side of the MH. I will check that tomorow.
bdpreece
Explorer II
Jan 10, 2017
First since you don't seem to be aware of it there was a recall issued for the IOTA ITS-50R transfer switch. Of course since the old Monaco is no more it does not mean much.

Find your transfer switch and with the power disconnected open the cover and look for burned/melted wires. If everything looks clean, tighten all connections and try your power again.

Recommendations are to replace the IOTA ITS-50R. I say this but, I am still running on mine. I do check it at least once a year though.
Kidoo
Explorer
Jan 10, 2017
enblethen wrote:
Large inverters have their own transfer switch.
No inverter power does not go through the transfer switch.
Incoming power from genset and shore power goes through transfer switch, then to a branch breaker that feeds the inverter.
You could have a partially tripped circuit breaker in the 120 power distribution panel.
Is your rig a 30 or 50 ampere shore power?
Start by resetting all citcuit breakers. Turn them all off applying light pressure toward off, then turn main breaker on, if equipped, then each branch breaker one a t a time.

Ok, thanks, I have 50 amps power. I did reset all the CB. I checked the transfer box and like you say, I saw 3 sets of wires, one from shore, one from genset and one going out, so nothing from the inverter.

Now, something new, I tested the shore power post. When I test it no load, there is power, test ok for ground and earth and I can have my buffer running, but if I plug in my RV power cord, there is a very little clicking sound in the shore post box and power goes off, but the circuit breaker does not trip on the power box.

I now wonder if the transfer switch is no good or the post, and / or if the post screwed the transfer switch.
mvpmich
Explorer
Jan 10, 2017
Definitely the Xfr switch. I had similar problem but switch clicked multiple times when energized then died. You can test the input and output lugs to verify if you are familiar and comfortable with electricity.
Kidoo
Explorer
Jan 10, 2017
More info., I unpluged the shore cord and started the Genset, after a few second, the relays in the transfer box clicked on but there was no power in the RV. I checked the inverter and it was clicking at maybe a 3 to 5 second interval. I stoped the genset and reconnected shore power, no relay engaged and no flickers from the inverter.

I have a Xantrex Freedom 458 inverter.
enblethen
Nomad
Jan 10, 2017
Large inverters have their own transfer switch.
No inverter power does not go through the transfer switch.
Incoming power from genset and shore power goes through transfer switch, then to a branch breaker that feeds the inverter.
You could have a partially tripped circuit breaker in the 120 power distribution panel.
Is your rig a 30 or 50 ampere shore power?
Start by resetting all citcuit breakers. Turn them all off applying light pressure toward off, then turn main breaker on, if equipped, then each branch breaker one a t a time.

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No power from shore or generator, ok on inverter, need help

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