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Indeed - but, as you go on to imply, that is only a 'certainty' since an RCD would presumably have reacted to the fault long before she had a chance to touch anything 'live'.... we know a RCD would have saved Emma Shaw ...
Yes, and as I'm sure you understand, once one gets a shock, all bets (about 'certainties') are 'off' - in certain circumstances/individuals, any shock, of any magnitude or duration, has the potential to be fatal. RCDs merely reduce the risk (and even that, only if it is an 'L-E shock').... but I made an error and cut through a live cable which should not have been there, with 30 mA RCD protection and I was knocked to the floor and woke up latter.
Number one is of clear concern, numbers 2 and 3 hard to decide if anything can prevent them.
The problem with pipes and wires moving a fault around a building is a problem, the one told in collage was a dog knocking over a standard lamp which landed on the radiator in one room and the fault was transmitted through the pipes to another room where some one touching the radiator got a shock.
The Emma Shaw case which I have quoted many times, she got the fatal shock when she touched the stop cock, in this case the stop cock was earthed, it was the leaking water which was live, made live due to a fault inside the wall.
But what we want is enough information to stop a repeat, we know a RCD would have saved Emma Shaw, but I made an error and cut through a live cable which should not have been there, with 30 mA RCD protection and I was knocked to the floor and woke up latter. So the RCD does not stop shocks it only limits the time to 40 mS, and with a gradual fault can trip before any one touches the item.
But "current was 256 volts" shows the writer had no idea what he was talking about. It seems unlikely wires would be carried in an iron pipe, iron pipes are normally for waste water, if so often simple push fit with a gasket of some sort, and you wonder how such a pipe carried voltage or current as normally used underground.
I did look at the old iron pipes in my parents house, they were not bonded, however since they went into the ground clearly were earthed, to bond them to house earth which was TN-C-S would likely increase danger not reduce it, as could only touch pipes when outside the house.
So why have you started this post, clearly some thing on your mind, but what?
That's often been pointed out (it's totally consistent), but eric's software seems unable to do any different.It's college BTW, and collage is a piece of art created by combining various individual pieces. </pedant>
That figures!These are all newspaper reports from the Edwardian period.
Been watching this programme about how when electricity was first installed, the "tradesmen" ignored the recently introduced regs (1882).
Some things don't change!
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