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Metal shed used for storage,it’s got no doors,like a porch effort.
Swa enters the back of the shed,clipped to a commando socket,& used to supply equipment,does the shed require main,supplementary or no bonding.
 
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How is the metal shed fixed to the foundations?
Can you not just test it, to see if it needs one?
 
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  • #3
Fixed by metal concreted into concrete,it’s on a industrial site.
Installed by Others,just visual on it,my instinct says should be bonded.
I dont think I would be allowed to do a test on it atm.
 
D

Deleted member 9648

If sounds from your description that it would not be possible to create an equipotential zone, therefore I'd be inclined to think bonding would not achieve anything.
 
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No mention of the equipotential zone in the 18 th,the shed is extraneous cause it’s outside,but is it an extraneous conductive part.
 
D

Deleted member 9648

No mention of the equipotential zone in the 18 th,the shed is extraneous cause it’s outside,but is it an extraneous conductive part.
In order to be extraneous it must introduce a potential, normally earth, just being outside does not make it extraneous. The 18th does not need to mention equipotential zones, the whole point of bonding is to create a zone of equal potential. If a person is stood in the open entrance with one foot on the concrete floor and one foot on the earth outside, there cannot be a zone of equal potential, bonding the shed will increase the shock risk.
 
D

Deleted member 9648

Not IMO, the ground will always be at or close to zero volts, whereas a bonded metal structure may have a significant voltage on it under fault conditions. My view is that where contact with the general mass of earth is possible a zone of equal potential cannot be created. You and others may of course take a different view.
 
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