DaD Electrical Knowledge Hub
In-depth technical articles on solar standards, inverter technology, hazardous areas and medical electrical safety – written from a working electrician’s point of view.
Working through a real project?
Read the article that’s closest to what you’re doing, then get in touch if you’d like help applying it on site.
Talk about a project →Grid-Tied Solar Systems vs. Grid-Tied Hybrid Solar Systems: What Homeowners Need to Know
Compares straight grid-tied solar with hybrid (battery-ready) systems in normal language – how they work, what they cost, and how to decide which fits your home and power bill.
Read the full article →Comprehensive Guide to AS/NZS 4777.1 and AS/NZS 4777.2 Standards for Grid-Connected Inverters
Deep dive into the AS/NZS 4777 series – installation and performance requirements for grid-connected inverters and how they impact real-world solar jobs.
A Comprehensive Guide to AS/NZS 5033: Installation and Safety of Solar PV Systems
Walks through the key parts of AS/NZS 5033 – PV array installation, wiring, isolation, fire and labelling requirements – and why they matter on every solar job.
Transforming Energy Management with Sigenergy: A Technical Deep Dive
Looks under the hood of Sigenergy hybrid inverters, batteries and EMS – how they work, where they suit best, and what the specs mean in practice.
A Comprehensive Guide to GoodWe Grid-Tied and Hybrid Solar Systems
Explains GoodWe grid-tied and hybrid inverter ranges, energy flows and common design choices for residential and small commercial solar.
Understanding the Differences Between IEC/EN 60079 and AS/NZS 60079
Compares the international and ANZ versions of 60079, including certification schemes, wiring practices and why the local variations matter.
Mastering AS/NZS 60079 – Everything You Need to Know About Hazardous Area Safety
A full walkthrough of AS/NZS 60079 – zones, equipment protection, inspections and competency requirements for explosive atmospheres.
Mastering AS/NZS 3003: Everything You Need to Know About Electrical Safety in Patient Areas
Explains AS/NZS 3003 requirements for GP rooms, dental surgeries and other patient areas – supply types, isolation, earthing and equipment zones.
Understanding AS/NZS 3551: The Gold Standard for Medical Equipment Safety and Maintenance
Covers AS/NZS 3551’s framework for testing, servicing and documenting medical equipment to keep clinics compliant and safe.
Guide to Home Dialysis System Setup – Electrical and Safety Requirements
Practical overview of power, safety and backup considerations when setting up home dialysis systems in line with medical-area standards.
Need help applying any of these standards on a real site?
If you’re working through a design, audit or upgrade and want a second set of eyes, get in touch with DaD Electrical. We work across solar, hazardous areas and medical installations throughout Auckland and beyond.