<div>While i was building my sub, i had quite a nasty electrical incident.</div>
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<div>I was completing the final wiring on the batteries and i attached a locking spanner inside the sub to the negative terminal while i tightened the other end. I did that no problem but unknown to me, the spanner had turned around and come up against the vbt linkage. Effectivly making the entire sub negative earth, like you would for a car as alec says.</div>
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<div>When i tightened the positive terminal, on my final turn, the spanner i had contacted the inside of the pod and knocking the paint off, effectivly introduced a massive short. A huge pile of sparks and molten spanner blasted out of the pod right into my face and continued for about 4 seconds (which felt like forever) until the spanner melted through and dropped off. That was very unpleasant and i definitly wouldnt like that inside. I was very careful to ensure all wiring is completely isolated after that.<br>
regards</div>
<div>James<br></div>
<div class="gmail_quote">On 9 December 2013 13:37, Smyth, Alec <span dir="ltr"><<a href="mailto:Alec.Smyth@covisint.com" target="_blank">Alec.Smyth@covisint.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Hi Scott,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">If I understand you correctly, it sounds like you might have wired her as you would a car, with cables for the positive and using the chassis for the negative. This is a steel boat, so instead of that, what one does is two cables, one for positive and one for negative, but both of them equally isolated from the hull. Else, you are inviting a case of accelerated corrosion. <u></u><u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt">Best,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><br>Alec <u></u><u></u></span></p>
<p class="MsoNormal"><span style="FONT-FAMILY:'Calibri','sans-serif';COLOR:#1f497d;FONT-SIZE:11pt"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt">From:</span></b><span style="FONT-FAMILY:'Tahoma','sans-serif';FONT-SIZE:10pt"> Personal_Submersibles [mailto:<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank">personal_submersibles-bounces@psubs.org</a>] <b>On Behalf Of </b>swaters<br>
<b>Sent:</b> Monday, December 09, 2013 12:57 AM
<div class="im"><br><b>To:</b> Personal Submersibles General Discussion<br></div>
<div class="im"><b>Subject:</b> Re: [PSUBS-MAILIST] grounding question<u></u><u></u></div></span>
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<p class="MsoNormal">I connected mine to the electrical pannel through the body of the sub<u></u><u></u></p></div>
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<p class="MsoNormal">Thanks,<u></u><u></u></p></div>
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<p class="MsoNormal">Scott Waters<u></u><u></u></p></div>
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<p class="MsoNormal"><u></u> <u></u></p></div>
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<p class="MsoNormal"><u></u> <u></u></p></div>
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<p class="MsoNormal"><u></u> <u></u></p></div>
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<p class="MsoNormal"><u></u> <u></u></p></div>
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<p class="MsoNormal"><span style="COLOR:#575757;FONT-SIZE:9pt">Sent from my U.S. Cellular© Smartphone<u></u><u></u></span></p></div></div>
<p class="MsoNormal"><br>brian <<a href="mailto:brian@ojaivalleybeefarm.com" target="_blank">brian@ojaivalleybeefarm.com</a>> wrote:<br>Hi All,<br> On the K boats where does one normally connect the ground to the sub? <br>
<br>Brian<u></u><u></u></p></div></div></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br></blockquote></div><br>