I'm running some long 12 Volt circuits to rope lighting and I'm needing to figure out the voltage drop. I have already put in 12-2 12 volt landscape wire. I need to find out what the resistance for this wire is. It seems to have more strands than stranded #12 so I don't think that Ohm value is what I want.
Do you have any loss figures for the wire itself? In that, usually there are stated losses for a given size of wire given as mV per Amp per metre (foot?) this is then used to calculate the total voltage drop of the circuit. BTW, if you are trying to find the resistance of that wire, you'll be needing a low-ohm meter or a really accurate multi-meter.
I have no intention of using a meter to calculate it myself. I know there are tables for cross-sectional are of conductors but like I said this wire is stranded with probably twice as many strands as #12 THHN stranded.