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Silicon · 19th Nov 2018, 8:08 pm

What device measured the voltage of the faceplate?

If it has a high impedance it may be measuring the current leakage through the capacitance between the live and earth conductors. This can happen if there is a break in the earth connection (even if the insulation is OK). X2 capacitors from live to earth in some equipment might be adding to the problem.

However 10mA is a significant current.

The wiring should be considered unsafe until proven otherwise.

19th Nov 2018, 8:08 pm	#8
Silicon Nonode Join Date: Jun 2007 Location: Coulsdon, London, UK. Posts: 2,163	Re: Neon tester vs dodgy wiring What device measured the voltage of the faceplate? If it has a high impedance it may be measuring the current leakage through the capacitance between the live and earth conductors. This can happen if there is a break in the earth connection (even if the insulation is OK). X2 capacitors from live to earth in some equipment might be adding to the problem. However 10mA is a significant current. The wiring should be considered unsafe until proven otherwise.