We have an external garage and a 4 core (brown, blue, green/yellow, black,) cable is supplied from the main property. The garage is supplied with an electric door opener, wall sockets and an internal light. The cable in the garage is a 3 core (brown, blue, green/yellow) cable that needs connecting.
I assume (need to measure) the black wire is connected to a switch in the main property. As I will not use this, I'm wondering the best way to handle the black. Should I just connect this to a connector block and leave it at that?
Thanks for any pointers
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