Yup, I work with 4/0 (0000) cable pretty regularly, for things like generators or powering large systems. We have a few trunks full of cable, and it takes a crew of 2 or 3 to actually lay it because it’s so heavy. Usually one person pushing the trunk along, one focuses on uncoiling it from the trunk, and one focuses on actually laying the cable. We use five conductors at a time (one neutral, three 120v hots leads, and a ground,) so it’s a big bundle. Each cable weighs a little over a pound per foot, and there are five bundled together. So a 150’ coil can easily weigh 750-800 pounds.
Yup. Djinn were, at best, mischievous. At worst, they were outright adversarial and would only begrudgingly grant wishes if you managed to force them into it. Basically, they had the ability to grant wishes, but didn’t want to. So you had to find a way to force them into it, usually by trapping them and striking a deal to release them if they granted your wish.