Extraneous conductive part in external workshop

[cliffed]

Visual on installation when replacing a couple of faulty fittings.
No continuity on steel structure of building, EICR not available @ time of visit.
MBPC to each column ?

 

[HappyHippyDad]

That looks like a steel support rather than a Columb (which would go into the ground).
I guess I would be testing to see if it was extraneous (ie <24k ohms from memory).
What figure did you get?

 

[timhoward]

That looks like a steel support rather than a Columb (which would go into the ground).

I wondered the same, whether they are essentially roof beams, or part of a larger steel structure that could introduce a potential.
I was trying to decide if they are bolts at the end, suggesting there is a steel super-structure....

 

[westward10]

I suspect the roof is more likely to be extraneous. Odd structure with the wood beams supporting it, a barn?

 

[cliffed]

I suspect the roof is more likely to be extraneous. Odd structure with the wood beams supporting it, a barn?

I wondered the same, whether they are essentially roof beams, or part of a larger steel structure that could introduce a potential.
I was trying to decide if they are bolts at the end, suggesting there is a steel super-structure....

Not done any testing on the Steel yet… noted on a MWC …@ the moment they are not bonded.
seems OTT for all to be interconnected… but if required then it’s gotta be done

 

[cliffed]

I wondered the same, whether they are essentially roof beams, or part of a larger steel structure that could introduce a potential.
I was trying to decide if they are bolts at the end, suggesting there is a steel super-structure....

That’s a good point if MBPC required could be feasible to bond @ one point at steel ceiling I guess

 

[cliffed]

I suspect the roof is more likely to be extraneous. Odd structure with the wood beams supporting it, a barn?

Good point… no inter connection between the 2 though…ceiling & steel’s

 

[cliffed]

I wondered the same, whether they are essentially roof beams, or part of a larger steel structure that could introduce a potential.
I was trying to decide if they are bolts at the end, suggesting there is a steel super-structure....

Steels are into the ground