Videos of low voltage ac wiring Click to view on YouTube5:52How To Wire an Air Conditioner Condenser Outside Unit - High & Low Voltage AC WiringYouTube · 6/9/2017 · 30K viewsClick to view on YouTube1:56Installing low voltage wire on an air conditionerYouTube · 1/26/2014 · 62K viewsClick to view on YouTube11:09HVAC Electrical Troubleshooting! How to Find a Low Voltage Short!YouTube · · 39K viewsClick to view on YouTube2:3924 Volt Problems with Air ConditioningYouTube · 9/3/2013 · 79K viewsClick to view on YouTube1:38Low Voltage WiringYouTube · 2/17/2007 · 37K viewsClick to view on YouTube10:48BASIC ELECTRICAL 101#05 ~ LOW VOLTAGE AND CONTROLSYouTube · · 104K viewsSee more videos of low voltage ac wiring What is A Low Voltage Circuit? - electrician2 What is A Low Voltage Circuit? he NEC does not consistently define low voltages. In 110(A)(1)(b), voltages of not greater than 30 volts ac rms and 60 volts dc are the dividing line. Article 720 is titled "Circuits and Equipment Operating at less than 50 volts." Article 725 uses tables which list voltages from 0 through 150 volts ac and dc.