Shore power not working

[F Farkel]

2013 R29, New to me in July.
Promariner 2500 inverter, no generator.

Hi,
The shore power (SP) worked when I got the boat but stopped working 2 weeks ago. The inverter works. I no longer hear the transfer switch “bump” when I toggle inverter/SP selector switch. I found the ELCI. When I test voltage I get 125v line side when the switch open but it drops to 45v on both line and load when the ELCI is closed. I pulled the SP inlet and I have 123v and all connections are good. But it appears it is not a direct line from Inlet to ELCI. The inlet cable is labeled “shore power jumper” and the cable on the load side of the ELCI is labeled “shore power plug #2”. This has me stumped. I spent 42 years as an electrician so I know how to troubleshoot.
Could you please answer the following questions?
1. Was there at one time more than one SP plug.
2. Is there a separate transfer switch or does the inverter make the transfer. If separate Xfer switch where is it?
3. Can you provide a schematic of the 120v shore power wiring?
Thanks for any help you can provide.

 

[BB marine]

download/file.php?id=731

 

[baz]

Thanks Brian. 🙂

 

[Thorolson]

On my 2012 there is a breaker reset in the port aft cabinet near where power comes in. Reach up high.

 

[fishheadbarandgrill]

2011 R29. Same problem. Was intermittent for 6 months. Promariner tech support suggested a bad transfer switch, which is internal to the unit. I replaced the unit and that solved the problem. When turning on shore power with the new unit, I can barely hear the transfer switch where as with the old unit it was a loud “thunk”

 

[Irish Mist]

I had the same issue a few years ago and replaced the inverter.. 2011 R29 I kinda wish I had gone for the pure sine one but the un pure one is doing ok for most things.

Good Luck

 

[F Farkel]

Well, it turns out the marina power had an open neutral. When I tested with no load it would read 124v but under load it would drop to 45v. The inverter wouldn’t transfer. When I connected to a different power pedestal it still wouldn’t transfer but maintained 124v. A couple whacks on the inverter did the trick. It has been working fine for a couple of days.It appears that my inverter is ok for now.
Thanks for all the the responses. This forum is a great resource for Ranger newbys like myself.
PS. I am writing this while hanging on a mooring bouy at Sucia State Park, Washington state.

 

[scross]

I think this is the second thread this season of mysterious shore power issues being eventually traced to a problem In the marina’s wiring and or power pedestal. My suggestion is if you are experiencing a shore power problem is to assume it is a marina issue before checking components in the boat. We have found a surprising number of bad pedestal outlets in the PNW having issues in a number of marinas.