Coiled cable is what would be called 'grouped' as the heat from one turn passes into the other cables. The regs have grouping factors to be applied to the current rating. For 8 cables it is 0.52.
So a 20 Amp cable with 8 coils can only carry 20 x 0.52 = 10.4 Amps.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets