KK1L

Fuse and breaker sizing is independent of the capacity of the power source. Fusing is typically intended to protect equipment especially when located at the device consuming power. It is typically si… (View Post)

Wire size determines its resistance over a given length and therefore the power dissipated over that same length for the current flowing. An 8ga wire is allowed to carry 55A in a THHN insulated wire… (View Post)

@Sharon_is_SAM Good thought. that would not fit the symptom of needing to pull the 30A fuse. The switch could not force a short path to gnd, and the battery appears to disconnect correctly. (View Post)

100W at 20V is 5A. Even if using 20' of 20ga wire (pretty small) you would only lose 0.5W in the wire or 99.5% efficient :) (View Post)