Industry

If you’re specifying building wire under UL 44​ and NEC Table 310.15, you’ve likely encountered the XHH family: XHH, XHHW, and XHHW-2. They look similar on a quote — all use XLPE (cross-linked polyethylene)​ insulation, no PVC jacket, 600V (with 1 kV common for photovoltaic feeders) — but the three-letter suffixes decide whether your run […]

When specifying building wire for North American commercial or industrial projects, three common UL44 types often cause confusion: RHH, RHW, and RHW-2. They share the same basic construction — stranded copper or aluminum conductor with EPR (ethylene propylene rubber) or XLPE (cross-linked polyethylene) insulation, no PVC jacket, rated 600V (also available 1000V/2000V) — but differ […]

When selecting building wire for Canadian electrical installations, understanding the distinction between T90​ and R90​ is essential. Both are rated 90°C and comply with Canadian Standards Association (CSA) requirements, yet they serve fundamentally different applications due to their insulation materials and structural design. This article provides a detailed side-by-side comparison of T90 and R90, covering […]

When planning an electrical installation, one of the most critical decisions you will make is selecting the right conductor material for your THHN wire. While both copper and aluminum AA8000 series THHN wires share the same robust outer construction—PVC insulation with a nylon jacket, rated for 600V and 90°C in dry locations—their internal differences are […]

Choosing the right photovoltaic (PV) cable is critical for the long-term safety, efficiency, and reliability of any solar installation. Two popular alternatives to pure copper cables are aluminum alloy (PV-AL)​ and tinned copper clad aluminum (TCCA)​ cables. While both offer cost savings over solid copper, they differ significantly in material composition, electrical performance, corrosion resistance, […]

When planning an overhead power distribution network under AS/NZS 3560.1, one of the first decisions you face is conductor material: aluminium or copper? While both materials are recognised by the standard, the reality is that aluminium is the absolute mainstream​ for low‑voltage Aerial Bundled Cables (ABC) in Australia. Copper is reserved for niche, high‑reliability scenarios. […]

When designing overhead power distribution for residential, commercial, or industrial projects in Australia, choosing the right Aerial Bundled Cable (ABC) is critical. The most common question we encounter at JZD Cable is: What’s the difference between a 2‑core and a 3‑core ABC cable under AS/NZS 3560.1? Although both are rated for 0.6/1 kV low voltage […]

When it comes to electrical wiring in Australia and New Zealand, the AS/NZS 5000 series​ sets the benchmark for safety and reliability. Among its typical constructions, SDI (Single Double Insulated)​ cable stands out with a unique dual-layer design: an inner PVC V-90 insulation layer and an outer PVC 3V-90 or 5V-90 sheath. This structure delivers […]

When installing a photovoltaic system, reliable DC connections between solar panels, inverters, and junction boxes are critical. That’s where solar PV extension cables​ — also known as PV harnesses or DC extension leads — come into play. These pre-assembled cable assemblies come with MC4 (or other) connectors attached at one or both ends, providing a […]

When it comes to connecting solar panels and building a reliable photovoltaic (PV) system, one component stands out as the global benchmark: the MC4 connector. Whether you are a solar installer, engineer, or DIY enthusiast, understanding the MC4 connector is essential for ensuring safety, efficiency, and long-term performance. In this article, we’ll break down everything […]