Re: accident at work


"Steve Robinson" <steve@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:GYIAf.5525$wl.913@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> "mrcheerful ." <nbkm57@xxxxxxxxxxx> wrote in message
> news:4CDAf.5463$wl.307@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>>
>> <wigwam@xxxxxxxx> wrote in message
>> news:1137902018.732263.325620@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>>> It is nice to see someone with such experience, but I will never
>>> believe you take MCB out _every_ time you change the bulb, sorry.
>>>
>>
>> Changing a bulb is not the same as removing a light fitting. A bulb is
>> handled by the completely insulated glass envelope. Removing from
>> circuit a lamp fitting requires handling live circuitry. Throwing a
>> circuit breaker requires little skill or time, I would not even consider
>> removing electrical equipment while live (unless it was a life and death
>> emergency situation, in which case I would chop through the wiring with
>> the 20kv insulated chopper that is kept for that purpose)
>>
>> mrcheerful
>
> Would you unplug a bedside lamp from the wall socket ! the fittings the op
> is talking about are identical in operation to a socket

I would turn the power switch off first (the one at the circuit) However
the op is talking about a maintained 240 fitting, they do not have a plug
and socket like a bedside lamp, as he says they have a permanent power and a
locally switched power going in. It is essential to remove the power before
unplugging something, if not there is potential for a spark and therefore
fire or injury, a circuit where nothing is happening, such as a failed
bedside light has no potential for a spark in ordinary circumstances,
whereas a maintained fitting has a battery, a charging circuit, a capacitor
etc. etc. all of which are connected up all the time (hence it works if the
power goes off)

mrcheerful


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