Irish,

I used to have a table for DC that worked with volts, amps, distance and AWG to figure the correct wire size to run in full scale aircraft. I want to think that it was in my A.C.41.13-1a (Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair) book I used when I got my A&P years ago.

Try looking through [link=http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/99C827DB9BAAC81B86256B4500596C4E?OpenDocument]A.C. 41.13-1B Chg 1 online through the FAA[/link] and see if you can find anything in there. There's a lot of chapters and really good information in there, and it starts off with wooden aircraft and fabric covering. If the amps are not to high, you may be able to get away with 14g wire instead of 12.

I just glanced through the contents and it appears that Chapter 11 is the electrical section.



Hogflyer