Just imaging, your laying the money coat, last coat of clear and the power goes out...
Yeah I would definitely have a secondary power source. My F150 has a 400w inverter. The small fans are 2 x 950=1900w, and the big ones are 1100 x 2=2200w, Well just another excuse to get a generator anyway.I can see putting it up inside another structure and having a backup power supply...even an invertor from your diesel pickup or new F-150.
What they don't tell you, these are illegal... they do not meet any aspect of the International Fire Codes... that is what is adopted in every state, city, county, special district in the US, etc....... specifically Art. 79 nor does it meet ANY of the International Building Codes similarly adopted as well...................Just imaging, your laying the money coat, last coat of clear and the power goes out...