Best option going forward. Install cert.

[JohnW2]

... not welingtons as granite is added to mix to reduce static, and try holding the line wire.

Do I take it you mean graphite? - I don't think granite is significantly conductive.

However it is the very being in a laboratory which means the results are not valid. Around the home we have loads of items linked with inductive or capacitive bonds which you can't emulate in a laboratory...

All true, but you won't find capacitive (or inductive) paths of sufficiently low reactance to present a hazard and, in many cases, not enough enough to feel anything at all.

Kind Regards, John
Edit: typo corrected

 

[ban-all-sheds]

... capacitive (or inductive) paths of sufficiently low reactance to present a hard and ...

Do I take it you mean _________ ?

 

[JohnW2]

Hmmmm - either my typing fingers are taking shortcuts or some of my keyboard keys are sticking! Corrected.

 

[ericmark]

I hate this auto correction, normally spot it, but missed that one.

 

[ban-all-sheds]

What kind of person writes a spell-checking tool which doesn't like the word 'graphite'?

 

[DetlefSchmitz]

Not sure how you can, in real terms you could select a random set of homes, where insulating foot wear, not welingtons as granite is added to mix to reduce static, and try holding the line wire.

However it is the very being in a laboratory which means the results are not valid. Around the home we have loads of items linked with inductive or capacitive bonds which you can't emulate in a laboratory, I only know of one job where the floor was tested, in a hospitial operating theatre special floors are used to reduce sparks because of gases used, other than there I have not seen floors tested.

OK - go from some basic theory then. The capacitance of a human body to a distant earth is between 100-200pF. This gives a reactance at 50Hz of about 16MOhms. so the current flowing from direct connection to (say) 240V ac would be... something like 15uA.

Below 500uA is said to be imperceptible. Below 15mA will not trip a 30mA RCD.