You are referring to the use of flexible cords as a substitute for a permanent wiring method.
When I looked at the OP's 'electrical board,' my first thought was the "fair" I was at last weekend. I speculated that this was the point where multiple temporary booths got their power.
Then I opened my mail and saw an ad from a Christmas-lighting outfit. Looking at all those shrubs, I wondered if the board was set up for Christmas lighting.
In either case, I was assuming that the use of extension cords was legitimate. I was asking: how would you arrange this to supply 30 extension cords at once?
