In article , wrote:

Conduit would be good, but if you want to avoid using it, use UF
cable. The stuff made for underground.

Careful...

"Type UF cable shall not be used ... where exposed to direct rays of the sun,
unless identified as sunlight-resistant." [NEC, Art. 339-3(b)]




--
Regards,
Doug Miller (alphageek at milmac dot com)

Nobody ever left footprints in the sands of time by sitting on his butt.
And who wants to leave buttprints in the sands of time?