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PROTECTIVE EQUIPOTENTIAL BONDING. 411.3.1.2

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"Dad?"

"Yes son"

"Have you noticed the extra words added to the bonding regulation, 411.3.1.2?"

"No, what are they?"

"The regulation now says with regard to extraneous-conductive-parts, they need bonding if they are LIABLE TO INTRODUCE A DANGEROUS POTENTIAL DIFFERENCE"

"Why have those words been added Dad?"

Z.

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  • 0

    To my mind the extra words are strictly speaking unnecessary - as the concept creating a hazardous potential difference by introducing a another potential into the installation is already covered in the definition of an extraneous-conductive-part. I guess they've just put them in there to reinforce the "change" (i.e. a change of attitude, not of underlying principles) that internal metal pipework only connected to the outside by plastic pipework, need not be bonded.

      - Andy.

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  • 0

    To my mind the extra words are strictly speaking unnecessary - as the concept creating a hazardous potential difference by introducing a another potential into the installation is already covered in the definition of an extraneous-conductive-part. I guess they've just put them in there to reinforce the "change" (i.e. a change of attitude, not of underlying principles) that internal metal pipework only connected to the outside by plastic pipework, need not be bonded.

      - Andy.

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