Hi

I am working on some voltage drop calculations - but with a DC voltage. The calculation is very simple, a 2 core cable with 5% drop
allowance. I know from many sources that I need to double the length of
the cable when calculating the resistance because of the two wires.

My question is why do I double the length? I would have thought that according to Kirchoffs Voltage Law the voltage drop at the load would have only been the voltage drop along one wire?

Thanks in advance.

Ethean

I am working on some voltage drop calculations - but with a DC voltage. The calculation is very simple, a 2 core cable with 5% drop

My question is why do I double the length? I would have thought that according to Kirchoffs Voltage Law the voltage drop at the load would have only been the voltage drop along one wire?

Thanks in advance.

Ethean