[TowerTalk] Wire for prop pitch?

[Rich Hallman - N7TR]

I'm installing a k7nv prop pitch rotor in a few months and wanted to know what and where others have purchased their 10 gauge 3 conductor wire from?   This will be around 350 feet long and need to bury the run.   I looked at 10/2 romex with ground and may be the best option.

Thanks....
Rich.    N7TR