not any more, but there are plenty of installations out there that were designed with, and still only have, the 100mA up front RCD
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- Thread starter kenmason005
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Sure - and I suppose they are sort-of the TT equivalent of the many TN installations still around with no RCDs at all.
Of course, that's in the fairly 'recent past'. A bit before that, a good few of the TT installations would have had the infamous VOELCBs and before that (the era in wot I was brung up), there was 'nothing' - so TT installations effectively did not have any protection against L-E faults (but most of us survived!). In any event, 'separation of circuits' was then rather moot, so the presence or absence of installation-wide protective devices would not have been an issue, anyway ... the house in which I spent most of my first 20 years only had two circuits (sockets and lights) for much of the time, although it did eventually acquire a third for an immersion
Kind Regards, John
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