Supplementary equipotential bonding in group 2 medical locations

Former Community Member over 4 years ago

Hi All,

I'm new here and a trainee electrical engineer.

I am looking for pointers on how to calculate the CSA of equipotential bonding conductors in group 2 medical locations.

Having worked on site, I know that as a standard we use 4/6mm to allow us to stay within the 0.2Ohms resistance but would like to know the theory behind it so I can include this calc in my designs to prove where the result have come from when or if ever questioned.

Thanks,

Sam

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0 mapj1 over 4 years ago

Well, it's Ohm's law. But you need to know, either by assumption or measurement the expected current, and often you do not really. And then a minimum to do with mechanical robustness.

Mike

Slightly more long winded- if you can point out where in my previous post above you feel yourself coming unstuck, I'm happy to go into that in more depth . Or if you can show an example of what you do not understand, can talk you through it in slow time.
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0 mapj1 over 4 years ago

Well, it's Ohm's law. But you need to know, either by assumption or measurement the expected current, and often you do not really. And then a minimum to do with mechanical robustness.

Mike

Slightly more long winded- if you can point out where in my previous post above you feel yourself coming unstuck, I'm happy to go into that in more depth . Or if you can show an example of what you do not understand, can talk you through it in slow time.
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Supplementary equipotential bonding in group 2 medical locations

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