What size ground wire is required for a 3 phase, 240v welder fed with 3 #6 and 1 #12 ground?
C cwit New member Apr 28, 2009 #1 What size ground wire is required for a 3 phase, 240v welder fed with 3 #6 and 1 #12 ground?
roger Moderator Staff member Location Fl Occupation Retired Electrician Apr 28, 2009 #2 What is the size of the OCPD? Roger
F fireryan Senior Member Location Minnesota Apr 28, 2009 #3 for a 40 or 60amp circuit you would use a #10 but why do you put that you already have a #12gnd?
