Posted on

RCD vs PRCD: Why are they needed?

A portable RCD is an essential part of any testers kit for any test & tag job. But what are they and why are they so vital for testing and tagging electrical devices. More importantly, how do portable RCD differ from a regular RCD?

What is a RCD?

A Residual Current Device is used to prevent electrical shocks or electrical fires. By measuring the current in a system it can detect whether the electricity is flowing through an unintended path and automatically shut off the circuit. For example if electricity enters a person the residual Current Device will cut the power before it can give you too nasty a shock. Potentially saving a life or preventing an electrical fire.

Typically you can find RCDs throughout your home in places such as in the fuse box. They may also be built into socket outlets and some extension cords.


What is a PRCD?

A portable RCD is an especially useful piece of kit for any electrician or tester. By having a PRCD the user can guarantee their safety when working with an appliance that is of safety concern. It can plug into any standard socket and automatically cut the power when it detects any issues.

In fact, portable RCDs are so important they are often built into portable appliance testers

Whether you are a professional or planning on doing any DIY involving appliances, an RCD is a must have. Metrotest has a selection of reliable RCDs to choose from. Visit our store or get in contact with us to find the right portable RCD for you.

Posted on

Introducing the MET20: Facial Recognition Scanner & Covid-19 Temperature Scanner

Metrotest are pleased to announce the availability of a facial recognition scanner, complete with a covid temperature scanner.

The MET20 Facial scanner is an all-in-one Facial recognition and Temperature scanner with the ability to provide access control and staff attendance details. In the case of the workplace, the MET20 can allow access to authorised individuals and/or prevent those with a dangerous fever from entering. Thereby protecting others from the spread of diseases such as covid-19.

Facial Recognition Scanner Security benefits

This amazing little unit uses thermal imaging along with artificial intelligence assisted facial recognition software to accurately record body temperature as well as control door entry.

This is an ideal device that can be used in a wide range of environments and applications. Such as in areas where the management of people’s movement is important for security reasons. The exit and entrances of the following may benefit from a system that does not require easily lost or stolen keycards:

  • Schools and Universities 
  • Factories and industrial manufacturing
  • Healthcare environments such as hospitals and research laboratories
  • Offices
  • Research and development

Increased security can help protect the sensitive information, expensive equipment, or the spread of viruses to the sometimes large workforces.

Covid-19 Temperature Scanner for public safety

If security is not of importance, the MET20 can function solely as a covid-19 temperature scanner. Perfect for the entrances of shops and other areas frequented by visitors. Stopping the spread of the virus.

The MET20 Facial recognition and covid-19 temperature scanner is only active when a scan has been completed and uploaded. Meaning, it does not passively scan those simply walking past. So, no need to worry about big brother!

Available from $1490+GST per unit these are an amazing addition to any work site and help to keep everyone safe, while providing excellent security. Contact us online or visit our store for more details.

Posted on

Here are 3 Reasons to Hire Quality Testing and Tagging Specialists

Testing and tagging is the process of checking the safety of portable appliances. Testing and tagging involves a visual inspection followed by electrical testing with a Portable Appliance Tester. The tagging refers to the labels attached to tested appliances to indicated their safety. 

Although testing and tagging is somewhat straightforward, the implications of an improperly performed test could result in serious injury. So, hiring a quality testing and tagging specialist, with attention to detail is vital to reduce risk. To test and tag, one needs to be deemed competent under the current standards and does not necessarily need to be an electrician. Appliances need to be test regularly to reduce risk, and poor testers may miss or ignore the signs of danger.


A competent test and tag specialist ensures the standard and best practices are followed. The standards only outline how to safely and correctly test an appliance. Whereas, the best practice goes above and beyond these outlines to ensure a comprehensive service. A competent tester tests patiently and tags accurately. The tester will then keep a detailed record of every test with numerical data.

A less quality testing and tagging specialist may rush through their tests, and in the process follow the standards incorrectly, putting themselves and you at risk.

Quality Testing and Tagging Guarantee

As stated, a quality tester will keep detailed records of their tests. Under the standard record keeping is not required. However, even the most basic record keeping is strongly recommended. The ability to look at the exact results of a test gives you a guarantee that the test has been performed correctly, and its results are certain.

Simple pass/fail records can easily be made up, and if the tester was to be audited, little could be done to hold them accountable for dodgy testing and tagging.


We have heard many horror stories of testing and tagging specialists who rush through their tests and have little regard for the environments they are testing. At Metrotest we take pride in our brand image, and the quality service we provide.

Part of that means keeping a professional attitude and complying with the health and safety protocol of the workshops we frequently test. After all, testing and tagging is about preventing injury, not potentially causing one.

Here is what one of our recent clients had to say:

“I would like to express my thanks to you and your team for their professionalism, punctuality, attention to detail and the general way they conducted their work on site. The guys were always polite and worked around my office and workshop teams, to ensure they did not interrupt business, whilst adhering to our site health and safety rules.

A team to be proud of!” – Haydn Murray, ETEL South Island Business Manager

Hopefully, you learned what to look for in a quality testing and tagging specialist. If you need your appliances tested, give Metrotest a call at 0800 638 768 or contact us online for more information.

Posted on

If You Don’t Test and Tag, You Take a Risk


Not everyone sees the importance to test and tag their appliances or other electric-powered equipment. This is most especially true when a piece of electrical equipment is relatively new. Unfortunately, this poses risks to everyone who gets access to an electric-powered tool or appliance. However, we believe that it’s crucial to perform regular appliance testing and tagging, no matter how old or new an item is.

After all, no one wants to experience electric shock or other potential mishaps with a faulty appliance. To give you a more precise grasp on the importance of testing and tagging, here are the usual risks that come with a defective piece of electrical equipment.


#1. Increased risk for electrical shock

If you work in a cramped space and your appliance or equipment develops an electrical fault, it becomes difficult to avoid or prevent electrical shock. Unfortunately, an electrical shock can cause the following effects on the body:

  • Muscle spasms
  • Cardiac arrest
  • Nervous system malfunction
  • Burns
  • Increased risk for developing eye cataract

#2. Faulty appliances can cause damages

Without conducting regular testing and tagging, some of your electrical equipment becomes increasingly vulnerable to damage. It can also cause damages to your property. Below are some examples of potential problems that you might have to deal with if you have faulty equipment:


  • Fire damage – Fire damages are perhaps the most dangerous outcome of having a defective piece of electrical equipment. The electrical short spark can cause the appliance to go up in flames. It can also affect flammable materials inside the property like wallpaper, insulation, cabinetry, and curtains.
  • Physical damage – When an appliance starts acting up, it can cause physical damage to itself, the outlets, switches, and other components of your electrical system.
  • Damage to the surge protector – Each electrical equipment comes with microprocessors that detect power surges (electrical supply fluctuations, lightning storms, etc.). Unfortunately, if you don’t get your appliance tested and tagged, you may not be aware of potential problems resulting in damage to your surge protectors. This could potentially decrease its lifespan because it has less protection from power surges.

#3. Increased difficulty in managing risks in workplaces and homes

When you’re not sure about the integrity or safety of an appliance or a piece of electrical equipment, you become increasingly wary of the risks involved. This makes it hard to work around the devices. It also adds to your responsibilities and duties.


Find your test and tag supplies at MetroTest

We can’t emphasize enough the value of getting your devices tested and tagged. It’s a simple process that gives you peace of mind knowing that your electrical equipment works without a glitch. As long as you have the competencies to test and tag, you can handle the task on your own. Alternatively, you can call in a third party to carry out the job for you.

Need testing and tagging equipment and supplies? Whether you need to shop for your home, school, office or business, we have plenty of options you can choose from for your appliances and other electrical equipment. Check out our product catalogue here at MetroTest today!

Posted on

Fieldays Special – EasiPAT 10 + AS/NZS 3760

Do not miss the Metrotest fieldays special. Pick up a Sonel Metro EasiPAT 10 + bonus online AS/NZS 3760 competency training for $1490 + GST. This amazing fully functioned portable appliance tester is the next step in doing it yourself. The Sonel Metro EasiPAT 10’s features include PRCD testing, battery & mains operated, polarity testing and more. If you are looking to get into doing your own onsite testing, set yourself up with the Sonel Metro EasiPAT 10, the most reliable and easy to use portable appliance tester on the market. Ensure you are ready to test safely and with confidence with the included AS/NZS 3760 online competency training course. With the fieldays special choose from a range of different colour Metrotest Tiny Tags rolls to meet your requirements. Testing and tagging is an essential practice in workplace safety, and the most effective way to check your electrical equipment functions properly. For additional information give us a call at 0800 638 768 or email