TWL: Reverse Y Adapters & 50 Amps
Continuing to beat this subject to death I am still trying to grasp the
purpose of a Reverse Y adapter and paying $400 for it. If I tap two 30 amp
outlets from the marina somehow the adapter must know which side of the
210-240V each input is in order to get me 210-240V? And if I have 210-240V,
surely I have more amperage available on board when I split it back to the two
110V legs which my 50 amp 220 volt selector switch supplies. I have both 110
30 amp and 220 50 amp slide switch options and of course 30a and 50a inputs
for shore lines.
Ronald Barr
Lady Brookhaven
Hatteras LRC 42
Friday, January 2, 2004, 8:18:46 AM, rwhb wrote:
Continuing to beat this subject to death I am still trying to grasp the
purpose of a Reverse Y adapter and paying $400 for it. If I tap two 30 amp
outlets from the marina somehow the adapter must know which side of the
210-240V each input is in order to get me 210-240V?
The hot wires from the two 30 amp connectors (one per connector) will
go to the two hot wires on the 50 amp connector. From the description
in the West Marine catalog, it appears the adaptor has some "smarts"
in it to prevent damage from incorrectly wired outlets on the dock,
and to prevent the prongs on an unplugged 30 amp plug from becomming
hot.
And if I have 210-240V,
surely I have more amperage available on board when I split it back to the two
110V legs which my 50 amp 220 volt selector switch supplies. I have both 110
30 amp and 220 50 amp slide switch options and of course 30a and 50a inputs
for shore lines.
You can still only draw 30 amps from each 30 amp dockside outlet, for
a total of 60 amps at 120 V - but you can only use the full 60 amps if
your wiring on board splits the loads evenly between the two hot wires
in the 50 amp cord.
Ronald Barr
Lady Brookhaven
Hatteras LRC 42
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At 11:18 AM 01/02/2004 -0500, rwhb@msn.com wrote:
Continuing to beat this subject to death I am still trying to grasp the
purpose of a Reverse Y adapter and paying $400 for it. If I tap two 30 amp
outlets from the marina somehow the adapter must know which side of the
210-240V each input is in order to get me 210-240V? And if I have 210-240V,
surely I have more amperage available on board when I split it back to the
two
110V legs which my 50 amp 220 volt selector switch supplies. I have both 110
30 amp and 220 50 amp slide switch options and of course 30a and 50a inputs
for shore lines.
Ronald ,
Better to use watts to decide how much energy your getting to the boat.
30amps X 110 = 3300 watts and compare to 30 amps X 220 =6600 watts. Twice
as much. Its easier when you think watts.
For the listees: Ron and my Hat LRCs have a 30-110v input and a 50-240v
input. The boats have transformers so that 240v and 110v appliances can
work off either input. But with 3 A/C units an electric galley and water
heater, well its an electric boat and 3000 watts won't do it.
I'm not that knowledgeable on how the 220 volts get wired from two 110s.
But I can tell you that on my trip up the ICW and at my current marina I
have been faced with using only 30 amp shore power. Others on the list seem
to be luckier. But when its 95 degree 95 percent humidity Skooch needs her
6600 watts (provided by the 2X30 to 220v splitter) to keep my rum cold.
Skooch 42 Hatteras LRC
Worton Creek MD
David Stahl
Beacon Technologies Inc.
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