OK, one for the electricians!
I have a poultry net on the end of a 50m lead-out cable, but I only need about 15m of it at the moment.
I was thinking of mounting an old steel car wheel on the fence, so I could coil the excess up neatly and get it out of the way. However, at 4000 volts, I wonder if that might actually be a bad idea. For example, might I end up with a giant electromagnet perhaps?
What do you reckon?