Thanks for any insight

[John Burt]

I know that Ohms to Neutral impedance is part of voltage drop calculations, but does anyone Know the technical definition of this term?

 

[dereckbc]

Voltage drop is the proper term.

 

[John Burt]

Thank for your reply.

 

[Bob NH]

I know that Ohms to Neutral impedance is part of voltage drop calculations, but does anyone Know the technical definition of this term.

"Ohms to neutral" is the term used to specify resistance of the specified length (one way) of the conductor. The term distinguishes it from the "round trip" resistance of a pair.

Voltage drop = Resistance x current in Amps

Since the current must go "out and back", the voltage drop in a 100 ft long 10 Awg wire pair supplying 10 amps to a heater would be:

Voltage Drop = 10 Amps x (100 ft x 2 /1000) x (1.2 ohms/1000 ft) = 2.4 Volts