Quote Originally Posted by PapuaPilot View Post
Only one problem, you are using the current for both strobe lights. There are separate wires going to the Lt. and Rt. strobes. The amps in each wire are going to be half of the total. If you run the calculator again using 4.9A you will find that you can use twice the length of wire previously calculated, and that 20 guage will work up to 27 feet.
We would agree if we wanted to put each light on it's own breaker, but the combined load at the breaker is still the peak draw of 9.9 Amps so a 10Amp breaker if we are powering them both on a single breaker. We don't feel comfortable putting a 10Amp breaker on a 20 Ga. conductor, if I'm thinking correctly the wire could overheat and
burn before the 10Amp breaker with trip.