21. PAS 003 allowed for the design and approval of plugs without earthing intended for class II applications only. 22. The earthing conductor is uninsulated since it is not intended to have any voltage difference to surrounding earthed articles. 23. The big advantage of the TT earthing system is the reduced conducted interference from other users'connected equipment. 24. TT has always been preferable for special applications like telecommunication sites that benefit from the interference-free earthing . 25. Charging is done via a single-phase or three-phase network and installation of an earthing cable. 26. To work at night, powerful floodlights were brought to the remote beach location but earthing them was a problem. 27. All scope probes contain some facility for grounding ( earthing ) the probe to the circuit's reference voltage. 28. The Wenner method is the most widely used method for measuring soil resistivity for electrical grounding ( earthing ) purposes. 29. Supplementary question from editor Edison moved to a new question " Explain electricity consumer earthing " by Keit. 30. F�hrer-Wolkenstein, who also invented an earthing contact tester, was the ideal partner for an artistical cooperation.
