Wire Size Round Trip or Not
I am planning wiring for my wings and want to use the Garmin GAP26 pitot.
I measure it probably to be around 20ft in wire length from the panel out to the pitot. (40ft would be the return length).
The G3X manual says 12amps at -40C initially, and 10amps at 0C, so i think 10 amps is a reasonable value for the current draw.
Looking at AC43 for 20ft at 14V, the table says a 13AWG wire (so 12 AWG). If i consider the total wire run as being 40ft it would be 10AWG wire!!
The 12AWG wire needs a 30A breaker according to AC43, but the garmin manual says 20amp.
Am i supposed to consider the return path of the wire?
I know that most people on the RV14/RV10 use 14AWG wire I'm not sure what to make of the wire charts. Thoroughly confused.