Hi,
I'm doing a job for a friend (as a favour) who has recently purchased a shop that went broke. The previous owners ripped out most the CCTV system (including power and DVR). They have left BNC and power cables along with 2 outdoor IR domes.
I am fairly happy the existing BNC cables should be ok, but what has puzzled me is all the power cables have 4 cores (all various colours) but have been made into 2 by twisting together. Not to sound stupid, but I'm assuming they are live and neutral. Is there any reason why 4 cores twisted together have been used??
I've not done much CCTV installation so any help / guidance would be appreciated!
