Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This Question of the Day, concerning equipotential bonding of a public building, is answered by the ECA:
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| What size main equipotential bonding? |
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Question: What is the recommended size for the main equipotential bonding of a public building with its own transformer supply and 500mm tails?
Note that the maximum I can find is for 300mm tails, which is 50mm. Do I need to increase to 70mm? Also, do I need to earth the lighting conductor?
Answer: Subject to the design details of your building, 50mm may be acceptable.
And yes, the lightning protection system should be connected to the building main earth bar/terminal?
To see many more Q & A in Voltimum UK's Experts Area, please click on the link: www.voltimum.co.uk/consult.php?universe=consult.index.questions
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