I have someone with a tanning bed that was hardwired in the previous home. To make things simpler for them, I'd like to just take a dryer pigtail and wire it up for them instead. I don't know much about 220, but the current cabling is 10/2 nm-b with ground, 600v.
Are those appliance pigtails like what you'd see on a dryer the same? Or, are there important variances in cable type?
Is there any sort of max length recommendations or standards on 220 appliances?
Edit: added pictures