why would they sell a 2A lamp switch?

[Wal]

Thanks guys,

Some really helpful information here. Flex is blue/brown double insulated and so is the lamp-holder - to fit the lamp-holder to the existing bracket (which is part of the lamp-head tensioning mechanism) I've had to thread its neck (where the wires go in) and use the original threaded brass tube which holds it all together - the wires at this point have extra sheathing around them and the tube ends are chamfered and smooth - even though the risk here is minimal that bit of brass warrants having it earthed. Good to know.

Thanks again.

Wal.

[Neale]

The other thing about fuses is that people talk about them protecting equipment, which isn't usually correct. In fact, the chances are that if the fuse blows, it's because something has already gone wrong! Mainly, the fuse is there to prevent a fire if there is excessive current because of a fault. The nominal fuse rating isn't something to rely on too closely either - a normal fuse will probably carry its rated current for at least tens of seconds before blowing, and probably needs at least twice that to blow quickly. That's fine in practice as it gives just a little bit of headroom for switch-on peak currents but will still blow before the wiring bursts into flame!

[routercnc]

For info I just bought a 10A fuse for the plug on an extension cable reel. This was on the high street (Wilko)