i have an 8oo foot run off cable i need to run that will be feeding a 120 supply of 100 va transformer. is the #12 rwu wire size adequate.

tom [at] duplexelectricalltd.com

 

800 ft of #12 wire, single phase, will have voltage drop of approximately 2.7 volts/ampere.

 

Try the following links for information on calculating voltage drop.

http://www.elec-toolbox.com/calculators/voltdrop.htm

http://www.electrician-electricalcontractor.com/calculatevoltagedrop.html

When you paste the URL, remove any spaces the forum software may have inserted into it.

 

Electric... voltage-drop and conductor-loss are 2.67-V, and 2.22-W. respectively.

If you want the calculation method, contact me off-list.

Regards, Phil Corso (cepsicon[at] aol [dot] com)