Trusted & Reliable
Electrical Services

Welcome to Dorenal Electrical

Trusted & Reliable
Electrical Services

Welcome to Dorenal Electrical

Inspections & EWOF

Fully Qualified and Registered Electrician with over 20 years combined experience in electrical installation and inspections.

Power Quality Analysis & Thermal Imaging

Determining the overall safety and efficiency of your building or facility’s power supply.

Industrial Repairs & Installation

With extensive experience in industrial and domestic installations, no job is too small. We go the extra mile on every project!

Electrician John Curphey from Dorenal Electrical

We've got your back!

Dorenal is a local electrical business based in South Waikato and headed by John Curphey, a registered Inspector with decades of experience here in NZ and worldwide. Following a long career in the military, John prides himself on his attention to detail, ability to prioritise when needed, reliability, and zeal!

Electrical inspections you can trust!

Our thorough services help you mitigate risks, assist with the latest code compliance, and call attention to impending equipment failure or possible system downtime.

Our Core Services

We offers a comprehensive range of services for both industrial and domestic properties at competitive rates.

Registered Electrical Inspector

Complete records of inspection as part of the compliance process.

Re-verification of Installation

Certificates of verification for rental properties or insurance purposes. Caravan park periodic-verification.

Pre Purchase Installations

Detailed reports on existing electrical installations.


Electrical Warrant of Fitness for caravans and motorhomes as required every 4 years.

Power Quality Analysis

Power usage monitoring and recording with a 4 Channel Oscilloscope.


Thermal inspection as per insurance requirement.

Cable Location Services

Tracing and locating of underground power cables.


A qualified electrician with exceptional customer service and competitive pricing.


Automation as per spec ordered.


Need help with electrical maintenance?

We offer a full preventative maintenance service ensuring your planned maintenance and inspections are conducted on time and efficiently by an experienced, qualified, professional electrician.

Latest Blog Topics

News and trends from Dorenal Electrical. Stay up to date with info on Inspection codes and practices, Power Analysis, Thermal Imaging and more.

The importance in locating cables

Locating cables is a small cost to pay.

Investing a small amount in locating cables can avoid potential hazards and complications down the line and is worth every penny.
NZ Trade Group reaches the 275 members milestone.

NZ Trade Group Hits 275 Members!

We love hitting milestones, especially when they look like this! 🚀
Top Tier Speaker

Merry Christmas promotion!

Merry Christmas message with a blatant promotion, for one lucky winner in the South Waikato area.