According to Ignoramus24153 :
On 27 Dec 2004 20:13:52 GMT, Greg wrote:
They should have 8/3wg UF at the home store. The other choice would be PVC
conduit and single conductors.

Hm, I think that I need 8/4 cable:

If you are buying "cord" like SJT or SO it will say 8/4 but "cable" like UF or
NM (romex) it is labelled 8/3 wg* (*with ground). That will be 3 insulated
wires and one bare.


Ah, that's beautiful. Thanks. Yes, 8/3wg is precisely what I need. I
will check out home depot or Menards again. Last time I was there,
there was no stranded cable.

Before buying cord - is this intended to be a temporary cable, only installed
when the unit is in use? Or permanent.

A permanent one should be done with UF or conduit, or whatever, and buried (properly).
Perhaps you can run it along a wall in plastic conduit and use individual conductors.

A temporary one is where you can use "cord". Make sure you get the HEAVY duty
stuff (ie: SO or SOW). The medium duty stuff, like SJ, deteriorates too fast.

You're likely to have to go to a "real" electrical supplier for SO/SOW in this size.
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.