300v rated cable VS 600v…the real diff?
February 8th, 2010
Out at the yard, we currently run a few 1000W lights. The cables are 14/3 with a 600v in the rating(15ft lamp cord length)…but because I need to double the length of the lamp cords, I picked up some 12/3 Extension cords from Costco intending to cut them up as needed. $40 for 100′.
But I noticed they are rated 300v.
Do I need the 600v stuff?
Using extension cords for permanent lighting is not allowed. You should utilize underground feeder cable, or conduit filled with THHN in the proper size for the load.
