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Re: [PSUBS-MAILIST] Battery Safety Issues
Joe,
I think that is a somewhat different type of issue. Remember that AC doesn't
require much to shock you. Just providing a path to ground (earth) will get
you shocked. On the other hand DC will only shock you when you provide a
path to it's opposing pole.
I can see why you wouldn't want your shore power energized when cleaning the
bottom on your boat. A/C is sometimes "leaky"(motor cases, pump cases, etc.)
and the leak would be finding it's shortest path to ground(earth). If you
got it that path......it would be a bad thing(depending on the current
present). I refrain from working with A/C as much as possible.....but there
are cases A/C is the best method.
Being in a psub filled with water (with submerged batteries) wouldn't be a
joy ride, but I don't think it would be much more than a tingling sensation.
I don't think you would be worried much about the tingling sensation anyway.
You would have more important things on your mind. But I also would try to
have my power leads pretty close to each other.....not separated on each
side of the hull. But the design requirements for most electrical systems
will have the lead close anyway.......wouldn't be much use if they were not
connected to the same system. Also...I wouldn't connect my hull to the
negative side (as most craft are...like cars).......could present a problem.
James Long
Owner/Designer
Lil Brother LLC (Instrument Division)
----- Original Message -----
From: "Joseph Perkel" <joeperkel@hotmail.com>
To: <personal_submersibles@psubs.org>
Sent: Monday, August 06, 2007 1:36 PM
Subject: Re: [PSUBS-MAILIST] Battery Safety Issues
James,
Thank you for the info. I remember reading an article once with respect to a
"zone" while cleaning your boat bottom dockside. I cannot remember the
details, or why it was an issue, something regarding stray shore power
currents.
In any case, I will look over the electrical details from a safety
perspective in great detail.
Joe
>From: "Lil Brother LLC" <lil_brother_llc@bellsouth.net>
>Reply-To: personal_submersibles@psubs.org
>To: <personal_submersibles@psubs.org>
>Subject: Re: [PSUBS-MAILIST] Battery Safety Issues
>Date: Mon, 6 Aug 2007 12:27:37 -0500
>
>Joe/Brent,
>
>Yes...you will get some shocking effect, but it will not be severe. The
>kill
>zone with the battery submerged (or breaker box) will be in-between the
>positive and negative poles of the battery/connection.
>
>Remember there are underwater welders that deal with this all the time. It
>is an uncomfortable thing to do....but is not life threatening, until you
>enter the kill zone.
>
>James Long
>Owner/Designer
>Lil Brother LLC (Instrument Division)
>----- Original Message -----
>From: "Joseph Perkel" <joeperkel@hotmail.com>
>To: <personal_submersibles@psubs.org>
>Sent: Monday, August 06, 2007 7:03 AM
>Subject: RE: [PSUBS-MAILIST] Battery Safety Issues
>
>
>Brent,
>
>This is one of those issues in the "back of my mind" as well. I figured to
>delve in further at the proper time but, perhaps someone can elaborate.
>
>Joe
>
>
> >From: Brent Hartwig <brenthartwig@hotmail.com>
> >Reply-To: personal_submersibles@psubs.org
> >To: PSUBSorg <personal_submersibles@psubs.org>
> >Subject: [PSUBS-MAILIST] Battery Safety Issues
> >Date: Sun, 5 Aug 2007 21:22:09 -0700
> >
> >
> >
> >If you have one or more batteries in the pressure hull with you, and not
>in
> >a sealed off area, how do you keep from being electrocuted, if the inner
> >hull floods? Will not the batteries short out in fresh water, and even
>more
> >so in saltwater? I would love to be enlightened. ; )' Perhaps someone
> >else wants and/or needs to know as well.
> >
> >Even if the batteries are in pods, or another hull section, will not the
> >breaker box cause and other wire cause your trouble?
> >
> >
> >Regards,
> >Brent Hartwig
> >
> > " I kind of like doing the impossible. "
> >
> > ~ Walt Disney
>
>
>
>
>
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603-529-1100
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CAN-SPAM Act of 2003. Your email address appears in our database
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