My electric leaf blower burned out yesterday.
It was about 4 years old.
Should it last longer? I use a 100-foot cord. Is a heavy guage cord necessary?
You want a max 3% voltage drop in the cord at the rated current of the appliance. For 100' of #16 you could draw a max of 5A. Leaf blowers seem to draw 7A to 12A.
What gauge cord are you using and what is the nameplate current draw for your blower?
The (paper) Grainger catalog has a list of their cords, sizes, current ratings and lengths. With them, there seems to be two rules: 13A max for #16 AWG and 15A max for larger gauges, and 3% max voltage drop in any case.