T-Pain Is On A Boat: Re: [Electric Boats] Rewiring DC electric system and Grounding

Tuesday, March 1, 2011

Re: [Electric Boats] Rewiring DC electric system and Grounding

Shhhhhh.

Sent from my iPhone

On Mar 1, 2011, at 6:10 PM, "luv2bsailin" <luv2bsailin@yahoo.com> wrote:

Here's a question, how do they draw the line, is it 50V "nominal" or 50V "Max". Most 48V systems charge at 56V or more. I've always assumed that a 48V "nominal" system fell in the under 50V category, even though charging voltage can be higher, but I'm not sure if it's explicitly stated in the standards though. Can someone with a current copy verify that?
Jim

--- In electricboats@yahoogroups.com, John Raynes <johncraynes@...> wrote:
>
> Eric,
>
> Thanks Eric......point well made.
>
> John Raynes
>
> On Tue, Mar 1, 2011 at 6:50 PM, Eric <ewdysar@...> wrote:
>
> >
> >
> > John,
> >
> > You are correct. ABYC published TE-30 (ANS) — Electric Propulsion Systems
> > in 2009. Here's the link to the ABYC website for this standard.
> > http://www.abycinc.org/standards/purpose.cfm#TE30
> >
> > You'll notice that this standard deals with "System voltages over 50 VDC
> > and 300 VAC". Alternatively, "ABYC E-11, AC and DC Electrical Systems on
> > Boats, is limited to the design, construction and installation of direct
> > current systems that operate at a potential of 50V or less and alternating
> > current electrical systems operating at frequencies of 50 or 60 Hz and less
> > than 300 V ("extra low voltage")". Here's the link to the regular standard
> > which was revised in 2009 -
> > http://www.abycinc.org/standards/purpose.cfm#E11
> >
> > I would not advise anyone to re-publish those standards in this forum, ABYC
> > takes their copyrights very seriously. For electric drive professionals,
> > like yourself, I would recommend purchasing the relevant portions for your
> > personal reference.
> >
> > Fair winds,
> > Eric
> > Marina del Rey, CA
> >
> >
> > --- In electricboats@yahoogroups.com, John Raynes <johncraynes@> wrote:
> > >
> > > Tom,
> > >
> > > I believe in 2009 the ABYC was writing new standards specifically to
> > address
> > > wiring and electrical systems for electric propulsion in boats. This
> > would
> > > include any new standards for grounding systems. Does anyone know if the
> > > ABYC has published these new standards and can someone bring them here to
> > > this forum?
> > >
> > > John Raynes
> > >
> >
> >
> >
>