Heat Shrinking Wire. Teflon/Silicon Alternative?

[icecube57]

After discovering my phase wires being fused together. I decided to upgrade my wires going to the motor. The bad thing is any local wires from various stores arent up to the task. The wires that melted were the phase wires coming out of the controller which were 10G. The highest wires i can find is basically 12G automotive wire good to 70C. If i put a coating of heat shrink on the wiring will it protect the wiries from fusing to a certain degree. Surprisingly the stock 16g motor wire motor harness is fine. I plan to chop 95% of the original cable leaving only a pigtail for the phase wires. Im splicing new hall wire and run controller directly. I will crimp andersons on the motor phase wire. The phase wire extension will be heat strunk individually and together and ran through the frame. I will do the controller internal phase wires the same way.

 

[olaf-lampe]

Heatshrink wouldn't melt like pvc cables.If you can't find thicker cables I'd suggest to use 2x 12G wires parallel for each phase if possible.
Olaf

 

[BatteryMooch]

I highly recommend going to larger gauge wiring. Not only will they run cooler but your power losses will be lower. Fitting a larger gauge cable can be interesting though.

Are you saying that the motor has 16AWG wiring and that didn't overheat (melt its insulation) but your 10AWG did? Three possible causes; the insulation on the 10AWG was rated for a lot lower temperature than the 16AWG (and maybe more pressure holding them against each other?), the 16AWG had some air-cooling that controller wiring didn't, or the controller wiring was also being heated by the components in the controller (FETs?).

There are a lot of wire types out there that can easily handle over 1800 degrees F, up to 10AWG. Check out page 786 of the McMaster-Carr catalog at http://www.mcmaster.com.

 

[TMaster]

I second the motion on replaced the entire phase wires with 12AWG. Here's my post and zip file of pictures on what I did: http://endless-sphere.com/forums/viewtopic.php?p=232699#p232699 You'll find that thread full of information too, I'm sure you have seen it before I remember methods said he had lots of 12AWG teflon covered wire he would sell. I'm running 4mm Bullet connectors off the motor phase wires, good for 75amps.

 

[methods]

I found this on an odd search -

I do in fact have a good size spool of 12awg Teflon wire in white.
I am going to rewire a bunch of 9x7 9C motors to go with my 6fet Stealth boxes

If anyone needs some I have more than I need.
It is quality - silver plated mill spec.

-methods