Hatteras Re-using 3 conductor Hardwired Cablemaster Cord as Manual Shore Power Cord

[coop]

I wanted a longer glenndinning cable master cord and had the old one removed and replaced (the old one was still working fine). The old one is 74 feet long and I put a new Marinco 50A 220 V three pin + ground shroud connector on the former hard wired "boat" end. The cable seems to be working fine for the last 24 hours. Some more details and then my question:

The boat is a 1998 Hatteras Euro Sport Deck MY (50A 220V service on each side). Source 1 is for a manual deploy cord which I use at home port. Source 2 is a hardwired glenndining cable master cord which uses a 3 wire cord, not a 4 wire cord. The hardwired cord has one terminal in the connector (the straight one) which is not connected. The boat also has 30A 120V inputs for basic service which I have never used.

I assumed re-using the "old" hardwired 3 conductor cable and not connecting the straight terminal to a new four terminal connector would be ok. I wired the "Black" and "White" to the "hot legs"- the bent terminals and the "green" to the outside shroud "ground". This exactly matched the "Old" install for the dockside end of the cable and I verified connections using an Ohm meter. The old Glenndining cable (which is a Hubbell cord) had a red rubber warning label on it, that said. "Connect Black and White conductors to the two line terminals. WHITE IS NOT NEUTRAL in this configuration".

I plugged the cord into the manual deploy Source 1 and the power pedestal and everything seems to be working ok for the last 24 hours including running all 4 AC units in hot weather. The wife also did some laundry and used the dryer. The panels say I'm getting 220Volts on board.

The "store" bought manual cords have 4 conductors and this through me off for a while. Of course those work fine but I have to use two of them (100 ft). With the 74 ft cord I have 25ft less voltage drop issues. The Hatteras manual says that the boat is basically a three wire 220V system and uses isolation transformers to handle polarity.

Anything to be concerned about or something I didn't think about?

P.S. I put one hand in the water at the stern of the boat and didn't get shocked......

Thanks,
Tony

[SKYCHENEY]

You did it correctly. No neutral wire comes aboard. The isolation transformer makes its own neutral. You only need the two hots and the ground.