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Correct Fuse?

MudMoney

Well-known member
What is the correct fuse to use on vacuum with 2 1.5 hp motors? What is the difference between an ABC-20 amp and a MDA-20 amp slo blow fuse? What are the common uses for slo blow fuses? Thank you.
 
I use a MDL-10 for each motor, or a MDL-20 if one fuse for both. They are slow-blow fuses, so they won't pop under the start-up load

The Doyle vacs had ABC-20 ceramic fuses on each motor, and within three months every one had blown for no apparent reason. They are electronics fuses - I don't know if they're a delay fuse, but obviously not up to the task.

In an emergency I've used a standard 20-amp automotive fuses, and they'll still blow before something burns up, but they usually melt under the metal cap just from the heat of normal draw from the motor running.
 
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