3-Phase Test & Tag Rotorua
At Test & Tag Rotorua, we provide reliable 3-phase test and tag services to keep your workplace and home safe. Whether you’re running heavy machinery in a workshop or powering large appliances at home, regular inspection and testing ensure compliance with AS/NZS 3760 2022 and help prevent electrical hazards.
Professional Electrical Safety Testing for Businesses & Homes
What is 3-Phase Power?
Three-phase power delivers a smoother, more consistent flow of electricity compared to single-phase.
- Single-phase works fine for small appliances like fridges or TVs.
- Three-phase is designed for high-demand equipment, where stable power keeps machines running efficiently and prevents costly downtime.
Why 3-Phase Testing Matters
For Industrial & Commercial Use
- Powers heavy machinery and equipment safely
- Large equipment
- Heating, ventilation, and cooling
- Higher efficiency than single-phase systems
- Reduces wear and extends machine lifespan
- Ideal for industries such as woodworking, fabrication, manufacturing, and data centres
For Residential Use
You may need three-phase power at home if you have:
- Large air-conditioning units
- Instantaneous electric hot water systems
- Large electric cooktops or ovens
- A home workshop with heavy-duty machinery
- Upgrading to three-phase ensures you can run all appliances at once—without tripping your circuits.
Pros and Cons of 3-Phase Power
✅ Advantages
Smoother, more reliable supply – reduces power dips and interruptions.
Higher efficiency – delivers more power with less energy loss than single-phase.
Longer equipment lifespan – machinery and appliances run more consistently, with less strain.
Supports heavy loads – ideal for workshops, factories, and large commercial buildings.
Future-proofing – makes it easier to add more high-demand appliances later.
⚠️ Disadvantages
Higher installation costs – upgrading wiring and switchboards is more expensive than single-phase.
Not needed for smaller homes – for most everyday appliances, single-phase is perfectly adequate.
Ongoing costs – in some cases, three-phase connections may attract higher supply charges.
Complexity – requires a qualified electrician for installation and maintenance.
👉 Bottom line: If you’re running heavy machinery, multiple large appliances, or planning future growth, three-phase power is worth the investment. For smaller households with standard appliances, single-phase is usually enough.
3-Phase power is smoother and continuous compared to single-phase power.
Our 3-Phase Test & Tag Service
✔ Testing and tagging of all 3-phase equipment
✔ Full compliance with AS/NZS 3760 2022 safety standard
✔ Detailed PDF report (not just a pass/fail tick box)
✔ Independent service – we don’t repair failed items, so you can trust our results
Regular inspections are part of a safe workplace and should be included in your hazard assessment process.
Don’t leave safety to chance. Ensure your 3-phase equipment and appliances are tested, tagged, and compliant with New Zealand standards.