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From: Greg Bradley (no email)
Date: Mon Jul 16 2007 - 15:53:14 EDT
UPDATE -
I realize people are probably tired of hearing about my electrical
issue and I've pretty much just come to accept it. But after being on
the boat again this last weekend, there are a couple more variables to
throw into the mix. I'm convinced this is a problem with the dockbox,
but I can't prove it.
If you recall, I originally posted this as a problem with the stove not
getting hot when on dock power, but it is fine under generator power.
When I measured it at the "Ship/Shore" switch on the boat it appeared
to be proper under load or not. (240V H-H, 115V H-N)
This weekend I learned that the hot water heater does not work and the
hand-held hair dryer does not work (well). I also noticed that the
Heart Interface display reads Incoming Amps as 30A, even though I'm
plugged into a 240V/50A service.
I don't know much, but I would have expected a voltage drop when
turning the stove on if it wasn't getting the proper amperage. I saw
no such drop.
I'm confused, but I'm come to just accept it. We will be leaving this
slip in October, so I'll just have to put up with it until then I
guess...
Thanks...
Greg...
--- Pascal Gademer <> wrote:
> possible but there coudl be more to his problem.
>
> I have measured 120 each H to N AND 220 H to H either on genset or
> shore
> and my oven doens't work on genset even though when measured with
> meter the
> readings are indentical, thru out the system... off the genset, at
> the
> panel, at the stove plug.
>
> pascal
> miami, fl
>
>
>
> ----- Original Message -----
> From: "Richard P Blake" <>
>
> . I would bet that the two
> > 120 VAC lines that are feeding your 50 A socket on the dock are of
> the
> > same phase. If you measure the plug at the dock there should be
> 120VAC
> > between phase #1 and ground and phase #2 and ground. You should
> measure
> > 240VAC between phase #1 and phase #2 which would mean that phase#1
> and
> > phase#2 are 180 degrees out of phase which is the correct why to
> wire the
> > plug.
> > The genny is supplying the two lines out of phase so all 240VAC and
> > 120VAC
> > will work correctly. The dock is only supplying two 120VAC in
> phase so
> > all
> > 120VAC work fine but all the 240VAC devices do not work properly as
> > they are only getting half the voltage required.
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