RCD spur to protect a wall light fitting
I'd use a 13A max RCD spur fitted with a 5A fuse
What I'd do in this situation, since FCUs/&quot;fused spurs&quot; use BS1362 fuses based on my limited research, is take a standard 13A RCD spur and downfuse it to 5A by replacing the stock 13A BS1362 fuse with a 5A BS1362 fuse instead.