Industrial Installation, Changing major components on the input.

I'm seeking advice on the necessary sign-off procedures for replacing a voltage optimization unit.

The specific work involves removing an existing unit and installing a new one. All cabling will remain in place, but it will need to be re-terminated to connect to the new unit.

The voltage optimization unit is located between the main incoming supply and the low-voltage distribution board.

Is it mandatory to have the work signed off by a registered electrician from a recognized body like NICEIC or ECA, even though it's a like-for-like replacement?

All engineers doing the replacement are 18th Edition Qualified. 

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  • The work is covered by CDM Regulations (regardless of whether or not it is classed as 'maintenance').

    The Client has to appoint a competent contractor to do the work ... the Contractor cannot start work unless they are satisfied the Client knows their duties under the Regulations, and has appointed, where necessary, competent persons to fulfil their duties under the Regulations.

  • Now we can debate whether being a member of a competent persons' scheme, or holding a C&G qualification is sufficient to demonstrate competence.

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