Re: Potting horror...

On Feb 13, 1:05 pm, cs_post...@xxxxxxxxxxx wrote:
Interesting.  Do you get any leakage through wires?

A friend who was working on one of the university robot sub challenge
projects said that after they sealed around the insulation of wires
piercing the hull, they were still getting water leaking in around the
conductors inside the insulation though the length of the wires (I
believe they had a wetted drive motor outside the hull).   There was
some talk of pumping the hull up with positive air pressure to
counteract this (depths involved were not too high) but that was also
undesirable - have to remember to do it, leave a trail of bubbles,
etc...

Where was the water penetrating into the wires?
You seemed to imply that the plastic coating on the wires was porous
or the other end of the (tube) of insulation was exposed to water.
.

Relevant Pages

  • Re: Not-too-conductive material
    ... you could consider dipping a pair of insulated wires (with ... thin insulation) into the water, each of them looped so that both ends ... of the water will cause the capacitance between the wires to vary. ...
    (sci.electronics.design)
  • Re: Not-too-conductive material
    ... you could consider dipping a pair of insulated wires (with ... thin insulation) into the water, each of them looped so that both ends ... of the water will cause the capacitance between the wires to vary. ...
    (sci.electronics.design)
  • Re: Not-too-conductive material
    ... you could consider dipping a pair of insulated wires (with ... thin insulation) into the water, each of them looped so that both ends ... of the water will cause the capacitance between the wires to vary. ...
    (sci.electronics.design)
  • Re: Not-too-conductive material
    ... you could consider dipping a pair of insulated wires (with ... thin insulation) into the water, each of them looped so that both ends ... of the water will cause the capacitance between the wires to vary. ...
    (sci.electronics.design)
  • Re: Harbor Freight insulation?
    ... On 2/18/11 11:30 AM, MMC wrote: ... I'd keep them out of the hull. ... If I come up with a need for insulation, ... My wife and I work at avoiding goods made in the PRC. ...
    (rec.boats)