580 Sedan Bridge 250V/50A shore power

F

flaod

New Member
Sep 20, 2017
7
Boat Info
1997 58 Sedan Bridge
Engines
TTD
Hello,
My grandfather's 1997 580 Sedan Bridge has two power cables for shore power on-board. On the boat where the cables retract one is labeled 240V/50A. The other is labeled 120V/50A. The female end of the power cord on the 240V side has 125/250 on it. I can plug this one into the 50A outlet on the dock no problem. The power cord under on the 120V side is marked 125V and it will not fit any of the plugs on the dock. On the main breaker panel on-board, there is a section that is labeled 240V and it has the switches for the air conditioners, the fresh water pump, the stove. If I have only the 125/250V cord plugged in, I can power everything on-board except the air conditioners and water pump. When I turn on the generator, I am able to run everything.

My question is, if I get the adapter that will allow me plug the 125V cable into a 125/250 outlet on the dock, will this allow me to run everything using the shore power? Or should I be able to run everything with just the one 125/250 cable plugged in?
Thanks,
Brian
 
If you leave the gen breaker on the 240 50 amp cord will power the entire boat. We only use the one cord on our 58 to power everything.

ken
 
Brian, you need to have the marina management put the proper receptacle in the pedestal on the 120VAC side. I ran into the same thing when I brought my boat back to my new marina.
 
Thanks for the quick responses! My concern is, if I need 220V to power the air conditioner, will getting an adapter to plug in the cord on the 120V side provide this? Or does it require 220V from the cord that I currently have plugged in? Is there a way to tell if the 50Amp outlets on the dock are 110V or 220V? Sorry I am a novice at this stuff.
Brian
 
The 110 50 amp plug is different, and cannot plug into a 220 50 amp outlet. We have never used our 110 50 amp plug. I have never seen an outlet at any marina's that has one. You would need a converter to reduce 220 to 110. However, check your breakers. We have four main breakers in our electrical panel. 2 for 220 and 2 for 110. As I said earlier, if you leave the 110 v gen breaker on, the 220 will cross over and feed the 110 side. I have been doing this for 10 years. I am not sure if yours is the same, but this method works perfectly.

Ken
 
Thanks Ken,
Yes it has the 4 breakers on the main panel and I have it set up the way you describe. Everything on the 120 side works, inverters are working, all lights and outlets work. The only things not working are the air conditioners and the fresh water pump. I am thinking the outlet on the dock that I have the 240V cable connected to is 110V not 220.
 
I suspect you have a shore power issue and you are only getting one leg in. Assuming you are using the 50 amp 220 cable, you should check the shore power pedestal to see that you are getting power on both legs. Then check your cable end connections. We use a glendenning system and twice now I have caught the cable plug when rewinding the cable. It disconnected the wires from the cable plug. It is very easy to reattach those wires once you take the boot off.

Ken
 
I have a similar set up.

When I use the 240V/50A from shore or generator I can power the entire boat (240V & 120V portions).
When I use the 125V/50A from shore (or another boat) via adapter (15A or 30A) I can power the entire boat (120V portion) but need to manage Amp draw base on what's available.

This is common for the larger Sea Rays that only have 120V refrigerators etc. Clearly the 240V air conditioning won't work in this case.
 
I have a 1996 55 Have never used the 120V, if you leave the gen. breaker on it will power everything. My understanding is the 120 was there if you are somewhere and the 50 keeps popping you can reconfigure the breakers plug in the 125 to take some load from the 240/50.
 
I have a 48 SB .at the stern on the starboard is a Glendining 240 volt hookup. On the port is a 240v plug-in. I recently plugged it in when thr glendining was out. Nothing. On the panel, nothing. I traced the wires to where they both connect to terminals in a “transfer box”. Could this be the problem?
 
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