Thanks for the picture! That really puts that question to bed. The product page makes those things look huge.
You joined the forum a year ago! Happy cake day! 
I ordered a pair of the BAV 10 gauge power cables to replace the stock power cables on my Martin Logan ESL 13a speakers. I was surprised when I measured that I need much longer cables than my “eyeballing” estimate suggested. I ordered a 12 ft and an 8 ft. In both cases, that leaves enough slack to go around obstacles and not put undo strain on sockets on either my speakers or my P12.
I’ll let you know what I think after they show up and break in a bit. Thanks for all the help with this!