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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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    If a customer uses the services of a NICEIC registered contractor it seems reasonable that they will expect the electrical work to be carried out by a trained and competent electrician with appropriate qualifications for the level they are working at.




    Maybe in an ideal world, but it is not the case in practice. It is equally likely that the cable will be pulled in and the screws  hammered home by someone 'in training'  following long distance instructions, and supervised by no-one especially closely. The give away is when a different person comes along to 'do the inspection for the certificate'  for a really trivial job . This tells you the installer was not able to test their own work.

    And that is before we note that there are those who are indeed trained and really by all measures should be competent, who can still create some remarkably poor installations.


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  • 0



    If a customer uses the services of a NICEIC registered contractor it seems reasonable that they will expect the electrical work to be carried out by a trained and competent electrician with appropriate qualifications for the level they are working at.




    Maybe in an ideal world, but it is not the case in practice. It is equally likely that the cable will be pulled in and the screws  hammered home by someone 'in training'  following long distance instructions, and supervised by no-one especially closely. The give away is when a different person comes along to 'do the inspection for the certificate'  for a really trivial job . This tells you the installer was not able to test their own work.

    And that is before we note that there are those who are indeed trained and really by all measures should be competent, who can still create some remarkably poor installations.


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