Trojan Boat Forum

i show this on my power supply....red light on the left with reading pegged to the right...on right gauge shows working...i unplug shore power and red light goes off..but gauges stay the same...could i have a polarity problem?

i asume shore power ? Are you using bothe cables ? Check the voltage to make sure you not getting 220 on one side and check the polarity .

using both cables and all outlets are on and working..headers, hot water,etc no sign of 220

Did you check with a volt meter on the boat and on the dock ? That should be the first thing . You can get a polarity test at a hardware store and check polarity of the outlets . Have you tried swaping the cords at the dock ? Does the issue change sides ?

heres a cube style polarity tester

Should be 1 on every boat


cost $10

RWS

https://www.amazon.com/Receptacle-Teste ... NrPXRydWU=

RWS wrote: ↑Wed Mar 17, 2021 6:41 am heres a cube style polarity tester

Should be 1 on every boat


cost $10

RWS

https://www.amazon.com/Receptacle-Teste ... NrPXRydWU=

Exactly !

I'll see your polarity tester and raise you a volt meter. Also serves to trip GFCIs, if you're into that kind of thing....

https://smile.amazon.com/gp/product/B08 ... UTF8&psc=1

lasker wrote: ↑Tue Mar 16, 2021 12:29 pm.....i unplug shore power....but gauges stay the same..

At minimum you need new gauges.

It was new gauges...

Do you have the cross tie switch and if so is it in the right position for both cables connected ?

cross tie switch?

lasker wrote: ↑Mon Mar 29, 2021 11:21 am cross tie switch?

There was an option that allowed you to power up both sides of the panel when only one shore power cord was connected. The breaker /switch was one of those lower ones on your 120 panel.The switch had to be in the correct orientation when both cords were used. Just a thought as it used to throw me if I wasn't watching. As I remember those polarity indicators were a bit on and off on our boat and I replaced the volt meters a few times.