If the garage power is already a spur then you are not supposed to take another spur off of that spur.
You can spur off a spur but you need to put a 13A fuse between them. You are effectively doing the same thing when you plug in a 4 way extension lead.
It's not ideal though and extending the ring is a safer and better idea.
I tend to forget about it as an option, you're right though, technically you can.
@Airhead started
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You can spur off a spur but you need to put a 13A fuse between them. You are effectively doing the same thing when you plug in a 4 way extension lead.
It's not ideal though and extending the ring is a safer and better idea.