How to hook up internal balanced signal and power cable

[itsikhefez]

Hey all.
When I connect internal DC power or SE input/output I use a drill to twist 2 wires which creates a twisted pair.

What is the best technique for balanced signal (3 wires), or bi-polar PS (3 wires)?
Straightforward options seem like:
1) Twist 2 of the 3 and have the 3rd by alongside independently.
2) Twist all 3 together with same drill technique
3) Braid the 3 ?

What is the best option?
Thanks in advance

 

[JonSnell Electronic]

Balanced signal is two wire, twisted pair, not three.
The third is a ground that may or may not be used and it is usually used as a screen or separate wire for want of another way to connect or keep it tidy.

 

[scottjoplin]

I twist power too, however many wires. Never braid unless prettiness is your priority

 

[DF96]

Yes, never use braiding unless impressing friends takes priority over things which actually matter like signal integrity.

 

[Speedskater]

Inside the chassis, you might use:

a] For a ± DC power supply, a twisted 3 wire cable.

b] For a balanced interconnect, a Shielded Twisted Pair (STP). The shield might not be necessary. a third wire does not make a shield.

c] For an unbalanced interconnect, a co-ax cable.

 

[itsikhefez]

Thanks all for the help.

Inside the chassis, you might use:

a] For a ± DC power supply, a twisted 3 wire cable.

b] For a balanced interconnect, a Shielded Twisted Pair (STP). The shield might not be necessary. a third wire does not make a shield.

c] For an unbalanced interconnect, a co-ax cable.

Speedskater, I want to make sure I get this correctly.
For DC, I currently have a twisted pair for +/- and another single wire for GND. Is this OK for DC power, or should I twist all 3?

Based on your post, for balanced signal, the additional wire is meaningless unless its a shield?

 

[Speedskater]

Think of it as:
a] +DC
b] Common DC
c] -DC

They all carry DC current, so twist all three. (and AC noise currents, for that matter)

The word 'ground' is a very confusing word. indeed.