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RCD types

AJJewsbury
Is it just me or are RCD types starting to get silly. After the EVSE discussion I've looked at the data sheets for a couple of manufacturers and collected the following list of RCD types:
  • AC

  • A

  • A EV

  • A KV

  • U

  • F

  • B

  • Bfq

  • B+

  • B NK

  • B SK

  • R (for x-ray/CAT supplies)



Plus 'delay' types of:
  • (none) - instantaneous

  • G short delay (10ms)

  • S proper delay/selective


I suspect type U might now be obsolete, and  Bfq and B+ from one manufacturer might be the same/similar as B NK and B SK from another, but it's starting to smack of people just making things up as they go along.


Anyone found any more?


   - Andy.
Parents
  • 0
    Point well made David. I guess that we have just become accustomed to providing RCDs and it would grate with us if we went back to the 80s when RCDs were only a feature of TT systems and perhaps a socket at the back door. I am sure many sparks can point to some dramatic example of the benefits of RCDs. Mine relates to the electrocution of a young Queens University student who had gone to a well known burger joint in Belfast. The hand wash/dryer had been vandalised exposing live wires. There was a delay in attending to the issue by the management with the result that a young woman at the very gateway to life lost her future and plunged her family in to the depths of despair. The burger joint immediately   installed RCD protection to all their wash rooms across the U.K. Too late for one family but at least for a few quid extra it might spare grief for others.
Reply
  • 0
    Point well made David. I guess that we have just become accustomed to providing RCDs and it would grate with us if we went back to the 80s when RCDs were only a feature of TT systems and perhaps a socket at the back door. I am sure many sparks can point to some dramatic example of the benefits of RCDs. Mine relates to the electrocution of a young Queens University student who had gone to a well known burger joint in Belfast. The hand wash/dryer had been vandalised exposing live wires. There was a delay in attending to the issue by the management with the result that a young woman at the very gateway to life lost her future and plunged her family in to the depths of despair. The burger joint immediately   installed RCD protection to all their wash rooms across the U.K. Too late for one family but at least for a few quid extra it might spare grief for others.
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