Power cord question

[JLR]

I have been running into a dead short on my 50 amp 125/250 v shore power connection. It trips the breaker on the pedestal immediately. I am 99% certain the problem lies in one of the plugs involved. My setup is as follows: glendinning cable master 50 amp line which I only extend out about two feet. From there, I attach a permanent dock cord with the female end going into my glendinning cord and the male end going into the pedestal. I have swapped out dock cords with the same result. I have swapped out outlets on the pedestal with the same results. That leads me to the Glenndinning cord. Since I have owned the boat, I was curious why the male end of the Glendinning cord only had two metal prongs rather than the three I am used to seeing. Nevertheless, for the past 8 years, I have had no problems. I am going to replace the male end of the Glendinning with the traditional three prong male end. Just curious, has anyone ever heard of a properly setup 50 amp 125/250v power cord with only two prongs on the male side?

 

[Andy B]

If you have an isolation transformer no neutral is needed, the transformer takes care of that, a lot of times the extra prong is removed .

 

[Luckyducky]

Maybe use a friends power cord to rule out if yours has a short

 

[JLR]

I have already ruled out that the shore power cord has a short. I am now trying to determine if the Glendinning cord has a short on the male end. The female end is hard wired as part of the Glendinning setup. I guess another possibility is a short in the isolation transformer. But, doesn't the 30 amp cord now in use go through the same transformer. If so, it is working fine.

 

[Genesis]

It's probably the plug, and a 250V line that goes into the transformer only requires two hots and the ground; the neutral is not connected at the transformer end anyway.

 

[JLR]

Thanks Karl. Much appreciated.

 

[JLR]

It was, in fact, the male end of the Glendinning cord that was bad. Replaced it with a new plug and all is fine. It was bit exciting since the new plug had the wire color coding mislabeled but all went well in the end. Thanks all for the help.

 

[Tim Powell]

I have the same set up om my 52c. Just a small word. The cord has or is suppose to stop when it is goes in the holder mine did not and kept pulling on the maile end till it shorted out . I guess what I am saying if your cord does not stop automatically may want to fix it or let it go in slowly . The glen denning will pull the end off.

 

[krush]

If you have an isolation transformer no neutral is needed, the transformer takes care of that, a lot of times the extra prong is removed .

.....

It's probably the plug, and a 250V line that goes into the transformer only requires two hots and the ground; the neutral is not connected at the transformer end anyway.

 

[JLR]

Not sure what the acronym means