I made a shorter wire of 18 inches just like this years ago and it has worked fine.
For that one I used the strands from an 8 gauge multistrand DC wire.
This one uses thicker strands of 14 to 12 gauge from old romex.
I Plan to run this from a battery
terminal to a battery
selector switch as I am adding another battery to my battery switch. So I will now have three 12vdc batteries, two on number 1, this new one just on number 2.
Strip off insulation
burn etc... however you do it the insulation
I used a combination of 12 and 14 gauge. Wires I had leftover from several years of electrical
work. All of it cost me nothing but my time.
Steps to reproduce
Get the wire
Get two 3/4 to 1/2 copper pipe reducer couplers.
Cram the wire ends into the small end of the coupler, so big end faces outward.
You can get about 45 of these wires in there.
Get ends all even
Smash the broad end flat with hammer.
Work it till it is about 1/4 thick and flat
The space will be completely copper filled.
Grind off excess wire from swedged end of coupler
Slide a black rubber heater hose onto the copper strands, either 5/8 or 3/4.
Rubber heater hose is very nice heat and chemical resistant thick take abuse hose.
Put the other coupler on the other end
Drill a 3/8 hole in broad flattened copper end
Solder seal the copper coupler ends
The wire you get is slightly greater than a 4/0 wire. More like a 250 to 300 mcm electric
wire as the outside of a copper pipe is a nominal 5/8 inch
Close up of an end
shows the scale of wire compared to a rug
I have not shown all the steps yet in my federal crime illegal wire spree and other accused and alleged federal infractions from another post and I dont expect you will make this.
If you want to save money
, recycle old wires and you do it properly it works.
If you panic about what the critical guy in the slip next to you says who has more money
than dirt or the surveyor
gasps and beats you on the head
then dont bother.
here are shots of the other project
wire and buss bar. Bar is 3/8 thick copper plate.
Wire Gauge Comparison Table
Notes on Pipe