"al" wrote in message
news
"Dave Liquorice" wrote in message
. 1...
On Sun, 23 Nov 2003 19:59:51 -0000, al wrote:

What does it mean by alerting when it's not protected?

When the "protection" isn't working it makes a noise to tell you.

Why would it not be protected?

Because a surge has destroyed the "protection" devices.


So it's pretty much like a fuse - how does it not blow if there's a large
load being driven by it (6 sockets could be powering quite a bit) if it's
delicate enough to stop (and very quickly) a surge in power?

Think of them as voltage, rather than current, sensitive fuses

Big ones would be mounted in an armoured case