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Discuss insulation resistance testing stanless steel in the Electrical Forum area at ElectriciansForums.net

i=p/u

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Arms
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in a cafe at present working and is a load of stainless steel in one corner for washing up etc..

i want to do a test to see if needs bonding

im nearly certain i I r test from earth isco to stainless steel in question and test @ 500vdc and if under 22k ohms it should be bonded,

is this info in big green book(bs7671) all electrical equipment in this area is ip44 rated.. any guidance welcome
 
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S

sjm

What makes you think the stainless steel is an extraneous conductive part? Is it bolted into the ground or in some other way significantly "earthy"?
You are correct about testing though, test from earth MET (remove all parallel paths) using IR tester at 500 volts, if the result is less than 22k ohms then bond it!
 

i=p/u

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Arms
  • Thread Starter Thread Starter
  • #3
so turn of main supply, remove earthing conductor and test accordingly, all im doing is new lighting and like for like fittings and noting anything that doesnt look right. i.e ring ciruit on 40A breaker
 

i=p/u

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Arms
  • Thread Starter Thread Starter
  • #5
nothing , sweet f a, but i could get 40 for changing it to 32 to keep the next slabering spark to work at this place at bay
 
S

sjm

That would be the approach i=p/u.
 
R

Rauer

ACtually I believe it's in gn8
 

i=p/u

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Arms
  • Thread Starter Thread Starter
  • #10
i say listen to me boys, youl go long way, good night
 
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