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To bond or not to bond

Former Community Member
Former Community Member

Hi,

Am spurring off a ring final to supply a 5A fused unit for operating a shower pump fitted to the water pipes in an airing cupboard. If my pipework is not continuous in metal then I need supplementary bonding between the pipes but if it is discontinuous then I may need equipotential bonding, can anyone please provide more of a steer on the latter point?

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    but instructions talk about the need for supplementary bonding if the attached pipework doesn't earth separately through the incoming water main

    It sounds like a muddled attempt to say that if you're cutting into pipes that form part of an existing supplementary bonding system (or are extraneous w.r.t. to the bathroom but rely on their connection to main bonding to allow actual supplementary bonding conductors to be omitted (under reg 701.415.2 (vi)) - then you need to maintain the continuity of the pipework across the pump. Such pumps often come with flexible connections or plastic pipe connectors which can spoil continuity even when copper pipes are used.

      - Andy.

Reply
  • 0

    but instructions talk about the need for supplementary bonding if the attached pipework doesn't earth separately through the incoming water main

    It sounds like a muddled attempt to say that if you're cutting into pipes that form part of an existing supplementary bonding system (or are extraneous w.r.t. to the bathroom but rely on their connection to main bonding to allow actual supplementary bonding conductors to be omitted (under reg 701.415.2 (vi)) - then you need to maintain the continuity of the pipework across the pump. Such pumps often come with flexible connections or plastic pipe connectors which can spoil continuity even when copper pipes are used.

      - Andy.

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