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Earth Continuity Test and Polarity Test following when replacing low voltage single phase fixed electrical equipment

Rob Bain
Hi all,

Would appreciate your thoughts on the need to undertake Earth Continuity tests and Polarity tests following replacement of single phase low voltage fixed electrical equipment such as tea boilers / heating pumps / immersion heaters etc, that are supplied either from a switched and/or fused connection unit or an isolator. The existing electrical supply cable is going to be re-used as the equipment being replaced will be like for like, so there is no increase in load, no requirement to undertake a design.

This enquiry has been put forward as it is anticipated that (some) engineers, who have a mechanical background but with limited electrical knowledge (safe isolation), would be able to carry out the replacement of certain items of plant once they have completed some competency training followed by assessment and sign off by the company's NIC EIC QS. 


Thanks in advance.

Rob
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    Forgetting anything else, the HSE Guidance (e.g. EIS 35, EIS 36) for appliance repair engineers includes for consideration that the installation is safe for the appliance (depending on what you're doing) - and Zs test is recommended.


    Suitable checks of the appliance to ensure it's safe after repair, even as simple as replacing or fitting a plug (minimum earth continuity here) is necessary. This is part of either consumer protection legislation (domestic customers) or Electricity at Work Regulations (absolute duty of Regulation 8 puts you in a difficult position if a simple test could have shown up an issue with the protective earthing)


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  • 0
    Forgetting anything else, the HSE Guidance (e.g. EIS 35, EIS 36) for appliance repair engineers includes for consideration that the installation is safe for the appliance (depending on what you're doing) - and Zs test is recommended.


    Suitable checks of the appliance to ensure it's safe after repair, even as simple as replacing or fitting a plug (minimum earth continuity here) is necessary. This is part of either consumer protection legislation (domestic customers) or Electricity at Work Regulations (absolute duty of Regulation 8 puts you in a difficult position if a simple test could have shown up an issue with the protective earthing)


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