Been working at a cinema refurbishment but our firm are not doing the data cables or the speakers. It got to the end of the day and the people who are doing that side of things were pulling what looked like t+e through the studwork on the back wall of one of the screens. The roll was not on a reel, was just lying flat on the floor and as you can imagine there was a twist every foot of the run (which goes along the back wall then down the left and right walls to the speakers). Even though it is just speaker wire could it still create a build up of heat from the eddy currents? I thought I saw in the OSG a regulation about using a cable reel to avoid twists when pulling cables but have looked through it and found nothing. Looked through a few parts of the regs book too and couldn't find anything there either. I expect the builders will start to board over it tomorrow so thought I'd post a query up on here as I know this can be a very informative forum. Cheers guys