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CDI Electrical - Darren Registered Electrician - West Auckland



Testing and Tagging involves visual inspection and electrical testing of electrical devices by approved and licensed electricians only. Once deemed safe and compliant, the item is then tagged with an approved label.

  • Ensure yourself, your staff and clients are protected from electrical and fire hazards
  • Have peace of mind that your electrical equipment complies with your insurance policy
  • Comply knowing your site meets Worksafe NZ requirements

When you choose CDI Electrical for your testing & tagging you can rest assured you are in good hands. Being a registered Electrician (holding current practicing licence) allows for faults to be rectified on site, allowing minimal downtime to tradesmen. 

Darren is a member of Site Safe, has SiteWise Gold status and holds a Certificate in Construction Safety.

He has been involved in the industry for over 30 years and now applying the extensive knowledge and experience towards Testing and Tagging.

The dangers of replacing fuse wire with copper wire

We Kiwis are a nation of DIYers. We love to spend our weekends renovating, painting, planting, and creating. While the DIY spirit is great to have, it can also spell trouble. There are some jobs thatRead more

Can you Test and Tag items yourself?

I have been asked several times, generally by tradesmen, whether they can buy the test equipment and test their own tools and leads. This is generally after they have been told that you do not need aRead more

What is involved in testing different sites?

A builder contacted me one afternoon, requiring his tools to be tested and tagged urgently. Forty-five minutes later I was onsite and testing his tools and leads. Three of his tools required repair aRead more

The CDI difference

Solving problems is a specialty and going that extra distance to ensure the client is happy is what CDI is all about. A client lived in a large multi storied house, separated by concrete floors.Read more

Thermal Imagery

While I was testing a factory office, a double adaptor was tested. Although it passed minimum requirements to be tagged, the readings were higher than expected. I used a thermal imaging camera toRead more

The benefits of regular testing

In large warehouses battery chargers are tested normally at 6 months intervals. One warehouse I tested recently had approximately 30 battery chargers for their forklift fleet in their battery bay -Read more

"Darren Calkin has been carrying out the test and tagging for Vacuum One and Ventilation One for over a year now, Darren is professional, punctual, reliable and a pleasure to work with. Vacuum One and Ventilation One carries out work for some of New Zealand's biggest home builders and I would urge you to use Darren's professional services. 

I have also passed on Darren's details to customers and friends with business for all their test and tag needs."

Vincent Jacobs | Sales Director 
Vacuum One and Ventilation One


Why do you need to test and tag?

  • Protect you, your staff and your clients from electric shock and fire hazard,
  • Ensure compliance with your insurance policy in that "reasonable care" is being taken,
  • Meets Worksafe NZ requirements that "all practicable steps" have been taken to ensure electrical safety,
  • Failure to test and tag leading to an accident with an untagged appliance could result in prosecution by Worksafe NZ leading to a fine of $500,000 and/or 2 years imprisonment. Pending legislation due 1 April 2015 will see penalties increase even further.

Who can test?

No electrical registration is required to be able to test but the standard states that you must be trained and competent. Competency is a grey area but one way to test the level of competency is how would a person prove their competency in a Court following an accident?

What to test?

Any appliance or cord that has a 240v plug attached to it.

How to test?

Testing is completed in accordance with AS/NZS 3760.

How often to test?

AS/NZS 3760 dictates the frequency of testing but depending on the environment of where the appliance is being used, this is between 3 months and 5 years. 

"Darren has been a service provider to Cardinal Logistics for a number of years and has proven to be professional, reliable and cost effective. It is a pleasure dealing with Darren. "

Charles Smith | Quality and Compliance Manager, Cardinal Logistics

"Thank you for your great service this week. The team was impressed with your tool box talk presentation, and I think that your service was really good."