Putting a lamp into an earthed brass lamp holder and it went bang
Afaict under the 17th there is no requirement for RCDs on lighting circuits per-se though most domestic lighting circuits will need to be on RCDs for other reasons (bathrooms and/or concealed cables).
It really is bad practice to replace lamps into live lampholders or to plug into live sockets that are not switched off.
But in practice it must happen all the time. I can't tell whether my bathroom light is on or off from the switch (pull cord). Same for lights with two switches.It really is bad practice to replace lamps into live lampholders or to plug into live sockets that are not switched off.
Lights with two switches should be wired so that the light is off when both switches are off (and therefore also off when both switches are on).Same for lights with two switches.
But in practice it must happen all the time. I can't tell whether my bathroom light is on or off from the switch (pull cord). Same for lights with two switches.It really is bad practice to replace lamps into live lampholders or to plug into live sockets that are not switched off.
And the intermediate(s) are off too.Lights with two switches should be wired so that the light is off when both switches are off (and therefore also off when both switches are on).
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