Grand Brass Lamp Parts, LLCAnswer
Nov 12, 2021 - 07:33 AM
The main difference between SPT-1 and SPT-2 electrical cord is in the thickness of insulation. SPT-1 gives you insulation that's 0.03" thick while SPT-2 is 0.045". With 50% thicker insulation, SPT-2 is the Wire of choice for anything that is reaching close to 7-amps.
