T80M Nozzle and Amperage Selection

[Stout]

I see from the T80M cut chart that the 40 Amp nozzle can be used at an amperage setting of 20 Amps. Can the 80 or 60 Amp nozzles be effectively run at 20 Amps? I know the kerf would be greater because of the larger orifice in the 80 Amp nozzle. Are there any other issues with doing this?

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