![]() If excessive leakage is then identified on the tails, you would then need to clamp around the live and neutral conductors of each of the RCDs to determine if the leakage on that RCD is above the 30% threshold, ideally looking for a current considerably less than 9mA. ![]() Where possible, you will need to have the day-to-day electrical appliances in operation to accurately determine potential issues. We all know how costly call-outs are to any business to reset or investigate a tripping RCD! If the installation shows a combined differential leakage current above 30% of each RCD/RCBO value (in this case 9mA) you may need to take action to manage the leakage to earth and minimise the likelihood of nuisance tripping. The DL6518 has a measurement resolution of 100♚ (0.1mA), making measurement very accurate when measuring minimal AC currents.ĭomestic installations tend to have dual 30mA RCDs fitted or are even made up entirely of RCBOs. The DL6518 Leakage Current Clamp measuring differential leakage on the live and neutral conductors of RCD2 indicating 5.5mA leakages, which is under the 30% threshold, as stated in BS 7671 ![]() You can check any installation by simply clamping around your meter tails on the supply. The Di-LOG DL6518 Earth Leakage Clamp is a low-cost solution that works on differential leakage measurement, which involves simultaneously clamping around the live and neutral conductors together. ![]()
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