Burnt contactor wire second time - hvac-talk Jul 20, 2016The other pole completely brand new looking. The wire that was burnt goes from contactor to run winding on compressor. Checked amps 14 for compressor run winding before contactor and after. Condenser fan pulling .8 amps. Anybody have any ideas what would cause that one wire to burn up again or can we just say its aCommon wire on compressor burntJul 03, 2013Wires to capacitor melted. What is the most likely cause?Aug 05, 2012Compressor Terminals FriedJun 29, 2011Contactors Keep Burning out.Jun 26, 2006See more results How to Connect Wiring to an AC Compressor | Hunker While wiring a compressor, there are a number of things to consider for a proper electrical hook up. A main concern is the amperage requirements of the compressor. This dictates the size of the wires. Another factor is if the compressor is single-phase or three-phase power. This dictates the configuration of the wiring.