Discuss External open metal shed in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

cliffed

-
Arms
Reaction score
644
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.
 
How is the metal shed fixed to the foundations?
Can you not just test it, to see if it needs one?
 
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.
 
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.
 
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.
 
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.
 

Reply to External open metal shed in the Electrical Forum area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Electrical Forum

Welcome to the Electrical Forum at ElectriciansForums.net. The friendliest electrical forum online. General electrical questions and answers can be found in the electrical forum.
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock