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I've a heated vest and sleeved vest made in B.C . They average 5 ohms . If Ohms law holds here , that's around 2.5 amps . Are you sure your vest is rated at (or close to 6 amps ? ) Peter

Wayne, when I went to school the formula was P=IE, how do you get that to agree with 6 amps, 12 volts and 120 watts? Just curious but by my math 120 watts at 12 volts would be 10 amps. 6 X 12 would be 72 when I went to school.