Quote:
Originally Posted by Alan Anderson
While that's a useful bit of information, it's mostly irrelevant to the question of wire size. You need to choose wire that won't melt before the circuit protection kicks in to cut off the current. Don Rotolo gave the officially correct answer (18 AWG) based on the breaker protecting the entire Digital Sidecar, though a different answer might be possible based on detailed knowledge of the light driver circuitry.
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Per the Digital Sidecar datasheet, the Robot Signal Light is protected by a PTC, at 2.2 amps