I know there is a 'how to' guide for this question but there are a few questions that still need answering.
1. The socket I want to use has 3 live, 3 negative and 3 earth going into it can I use this to add another spur even though it had an existing spur to an exterior light?
2. If I can't use this one which one could I use, ie how many wires would it have to have going in/coming out of it.
Thanks in advance