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  1. T

    Residual Current v Earth Leakage

    Midwest, no real concerns, just want to understand the readings so that I am better prepared to interpret them when I do have an issue. Thanks for your comments / advice. I think that,like you, I shall use the clamp meter as guidance only. PEG, not sure about the pipe outside the house, but all...
  2. T

    Residual Current v Earth Leakage

    Thanks to all for very useful replies. I have primarily tested with LN tails in the clamp, this gives the "high" reading I have mentioned (c. 19mA standard and >40mA with kettle on). If I test the earthing / bonding cables I get 0.7mA on main earthing conductor, 0.7mA on gas bonding and around...
  4. T

    Residual Current v Earth Leakage

    Hi PEG, earthing is via rod with RA of 143ohms, not perfect but have seen worse. Copper gas and water services also correctly bonded.
  5. T

    Residual Current v Earth Leakage

    I think I must be missing the blindingly obvious, but..... TT system......100ma time delayed as main switch, then some final circuits (which will require 30ma RCD as includes sockets etc)...then 30ma RCD for other final circuits... Prior to changing CU at customer's request to include 100ma...
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