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Author Topic:   Insulating Unused Electrical Wires
stefan posted 06-21-2008 01:34 PM ET (US)   Profile for stefan   Send Email to stefan  
My Rule pump seems to have died, only 2 + yrs old, so doing some checking. Fuses are ok, and power is going to the switch.

If it is in fact the pump, my thoughts are not to bother replacing it. I know the boat is self bailing, but I put it in because I'd leave at the dock for up to 2wks at a time, and felt leary in having water in the bilge.

After reading the threads, I'm still conflicted with the "leave plug in/out" opinions. Since the pump has quit, obviously I've had to leave plug out, and it's not bothering me like I thought it would. Especially since it's rainy season here in Fl.

If I decide not to replace the pump, can I disconnect the wires, then with electrical tape, seal them up, and keep them out of the way?

jimh posted 06-21-2008 04:31 PM ET (US)     Profile for jimh  Send Email to jimh     
If you disconnect an electrical circuit that was used to power a sump pump, pull back the wiring for it until it is above the usual waterline. Insulate the wires with 3M Scotch 33+ electrical tape. Secure the wiring with some nylon cable ties.
davej14 posted 06-23-2008 10:58 PM ET (US)     Profile for davej14  Send Email to davej14     
To be clear on your meaning of "disconnect", it would be best to disconnect the circuit at the power source, not just at the pump.
jimh posted 06-25-2008 09:53 AM ET (US)     Profile for jimh  Send Email to jimh     
A better technique for sealing the ends of electrical wires which are not connected is:

--cut a length of heat-shrink tubing and slip it over the end of the wire, leaving about 0.5-inch of tubing extending beyond the end of the wire;

--heat the tubing which will cause it to shrink;

--after the tubing has shrunk, remove the heat source;

--using a pair of needle nose pliers, immediately press flat the tubing that extends beyond the wire.

The heat shrink will tend to bond to itself, closing off the end of the wire. You can trim the end to a nice square cut.

If the wire has plenty of extra length available, cut off any exposed wire before adding the heat shrink.

Chuck Tribolet posted 06-25-2008 08:08 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
A variation on the heat shrink is to put a small rubber cap
(auto parts stores have them for sealing vacuum fittings) over
the wire, and heat shrink over that.


Chuck

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