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Alan,<br>
<br>
The best approach is to use threaded rod with the potting, if
possible. My question is probably better stated in the context of
whether air trapped between a multi-wire cable and the surrounding
sheath is an issue to be concerned about. Some cables have a good
tight sheath but others such as CAT-5 is pretty sloppy.<br>
<br>
A potential concern of the blue globe gland since it seals around
the cable sheath is what happens if the sheath gets damaged and
cut underwater. Water pressure will allow creep to flow between
the wires and sheath bypassing the gland. However the same would
be true of a home-made potted penetrator as well. What type of
inflow should we expect from such a breach? Minor?<br>
<br>
Jon<br>
<br>
<br>
<br>
On 4/16/2015 4:46 PM, Alan James via Personal_Submersibles wrote:<br>
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<blockquote
cite="mid:129513374.5691768.1429217212309.JavaMail.yahoo@mail.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff;
font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial,
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<div dir="ltr" id="yui_3_16_0_1_1429213666446_4548"><span>Jon,</span></div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550"><span
id="yui_3_16_0_1_1429213666446_4549">I noted that the lights
on "I think" a dual DW at Nuytco</span></div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550"><span
id="yui_3_16_0_1_1429213666446_4592">had oil in the wiring
tubes to the lights, which were a clear plastic.</span></div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">I
compensated a linear actuator & didn't strip the wires
inside the potting.</div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">I filled it
with WD40, & it just ran out between the epoxy & the
wires when</div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">I tipped it
upside down. No pressure applied. </div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">I think it
was Hank that suggested untwisting the wires so the potting
mix </div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">can get
around them. On the through hulls, Carsten & Emile are
using</div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">blue globe
cable glands with one outside the hull & another inside
for</div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">double
security.</div>
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4550">Alan</div>
<br>
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Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"
id="yui_3_16_0_1_1429213666446_4568">
<div style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
16px;" id="yui_3_16_0_1_1429213666446_4567">
<div dir="ltr" id="yui_3_16_0_1_1429213666446_4566">
<hr id="yui_3_16_0_1_1429213666446_4565" size="1"> <font
id="yui_3_16_0_1_1429213666446_4688" face="Arial"
size="2"> <b id="yui_3_16_0_1_1429213666446_4770"><span
style="font-weight:bold;"
id="yui_3_16_0_1_1429213666446_4769">From:</span></b>
Jon Wallace via Personal_Submersibles
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a><br>
<b><span style="font-weight: bold;">To:</span></b>
Personal Submersibles General Discussion
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> <br>
<b id="yui_3_16_0_1_1429213666446_4768"><span
style="font-weight: bold;"
id="yui_3_16_0_1_1429213666446_4767">Sent:</span></b>
Friday, April 17, 2015 12:06 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
[PSUBS-MAILIST] minn-kota cabling to hull<br>
</font> </div>
<div class="y_msg_container"
id="yui_3_16_0_1_1429213666446_4687"><br>
<br>
I think Emile had details of potting the minn-kota.
Anyone know where <br>
this might be located?<br>
<br>
Anyone waterproofing their cabling by oil-compensation
through a poly <br>
tube? If I remember correctly, Aquarius uses this method
for the <br>
electrical wires to the lights and vacuum.<br>
<br>
Jon<br>
<br>
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