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The Value of R.C.D.s

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There have been many discussions recently about R.C.D.s, whether they really are necessary, and is an installation necessarily unsafe if it is old and has no, or insufficient, R.C.D. protection.

 

Well consider this please. If you are driving and need to brake hard to save somebody from injury or death does that incident ever get reported. If you knocked somebody over due to having bad vehicle brakes then it might.

 

If an R.C.D. operates correctly and saves somebody from injury or death, does that every get reported? There may have been 10s, 100s or even thousands of cases where an R.C.D. has saved somebody from injury or death, but we will never know the numbers because of a lack of reporting of the cases.

 

Personally I like the idea of R.C.D. protection

 

Z.

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    and later the hybrid semicondtor and valve sets, there was at least one  Phillips model with a bridge, so the negative chassis was L and then  N on alternate half cycles. There was another model from the same era that  had 2 thyristors to do some clever switch-mode like thing to get a regulated rail. If anything went wring with that it usually involved changing all the silicon and the electrolytics, before powering on again, if not you soon had a sad pile of dead bits, and a PCB with bits of coloured wire replacing the blown out tracks.

    Oddly, even without RCDs we managed to live.

    Mike.

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    and later the hybrid semicondtor and valve sets, there was at least one  Phillips model with a bridge, so the negative chassis was L and then  N on alternate half cycles. There was another model from the same era that  had 2 thyristors to do some clever switch-mode like thing to get a regulated rail. If anything went wring with that it usually involved changing all the silicon and the electrolytics, before powering on again, if not you soon had a sad pile of dead bits, and a PCB with bits of coloured wire replacing the blown out tracks.

    Oddly, even without RCDs we managed to live.

    Mike.

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