[PSUBS-MAILIST] grounding question

[brian]

Should there be a ground connection to the electric motor housing then?
-----Original Message-----
From: "Alec Smyth" <alecsmyth at gmail.com>
Sent 12/8/2013 8:02:59 PM
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] grounding questionYep, the K boats are just like any others in this regard... one does NOT connect either battery terminal to the hull. In addition to what Sean mentioned, I believe the main reason hulls are never grounded, not just in subs but in any metal hulled vessel, is to prevent corrosion due to stray currents. 
Best,
AlecOn Sun, Dec 8, 2013 at 10:51 PM, Sean T. Stevenson <cast55 at telus.net> wrote:I don't know anything about the K-boats specifically, but the ABS rules specifically state that all subs are to use isolated electrical systems (battery negative not connected to hull). Safety grounds (component chasses, connector shells, cable screens, etc.) may be safety grounded to the hull, but there should be no electrical continuity between any battery or power supply terminal and the hull. The idea is that this significantly reduces the risk of electrical fire, as a loose wire contacting the hull (or any other short circuit, such as a carelessly handled wrench) - even your positive battery cable, will exhibit no potential to arc.Seanbrian <brian at ojaivalleybeefarm.com> wrote:
Hi All,
              On the K boats where does one normally connect the ground to the sub?  
Brian
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