On Sat, 26 Dec 2020 16:20:05 -0600, dpb wrote:

On 12/26/2020 1:13 PM, wrote:
Merry Christmas, everyone!
I'm looking to put a ceiling mounted heater in my garage workshop.
I'm looking at models that are 5000w and 240v. Rather than
hard-wiring the unit I'd like to have it corded and use the existing
240 plug I use for my table saw. Since the table saw isn't used
constantly I figure I could just have the heater plugged in and swap
for the table saw as needed. Is there any other concerns with
swapping devices plugged in to a 240 outlet?

Most heaters that are 5000w or higher say they require being
hardwired. However, there is a Dr. Infrared Heater DR-988 Garage
Shop 208/240V, 4800/5600W heater that comes with a 6-30R plug factory attached.
If this one comes with a factory plug attached, why can't I buy any
other "hard wired" unit and put a 240v plug on it?

You can do whatever you like; as another said it will violate the UL
listing for the other unit, but as long as the circuit is of sufficient
ampacity for the unit, it'll not be a safety hazard.

But, if it's in the garage and ceiling mounted, why wouldn't you just go
ahead and hard-wire it? If the plug is somewhere convenient that you
can swap it easily, it's going to be a fair run and leave a long cord
just hanging.

I'd suggest to "bite the bullet" and do it right.

And if there's a spare circuit in the panel it can even run
independently of the dryer.

Of course I shouldn't talk--I have 80 feet of 10 gage stranded wire
running from an outlet to where I charge my car.