Blog
Blog
Articles on cable design, standards, IEC 60287 calculations and tender work.
PVC vs XLPE vs EPR vs LSZH: Choosing Cable Insulation and Sheath Materials
Cable insulation and sheath materials set the conductor temperature, current rating, fire behaviour and cost. Practical insights on PVC, XLPE, EPR and LSZH: thermoplastic vs thermoset, where each fits, and the tender mistakes to avoid.
Solar PV Cable Standards Compared: EN 50618, IEC 62930 and IS 17293
Solar DC cables are one of the fastest-growing cable markets. What EN 50618 (H1Z2Z2-K), IEC 62930 and India's IS 17293 require, where they differ, and what that means for cable makers serving several markets.
IEC 60502-2 Explained: What the MV Cable Standard Decides, What It Leaves to You, and Where Tenders Go Wrong
IEC 60502-2 covers medium-voltage power cables from 6 kV to 30 kV. A practical summary of what the standard fixes, which design decisions it leaves to the purchaser and manufacturer, and the questions that prevent costly tender mistakes.
IEC 60502-1 Explained: The LV Power Cable Standard in Practice — What It Covers and What Tenders Add
IEC 60502-1 is the most widely used standard for low-voltage power cables. A practical summary: its scope, the clever "fictitious diameter" idea, what the standard does not guarantee, and the extra requirements tenders usually add.
IEC 60287 Current Rating Explained: Why Cable Ampacity Is a Site Decision, Not a Catalogue Number
A cable's current rating depends on where and how it is installed. What the IEC 60287 method really models, which inputs move the result most, and why catalogue ratings are a common source of over-sized offers and under-sized projects.
IEC 60228 Explained: Why a 240 mm² Conductor Is Defined by Resistance, Not Area
IEC 60228 sits underneath almost every cable standard. The key insight: a conductor's nominal size is a resistance promise, not a geometric area. What that means for cost, testing, copper vs aluminium and tender comparisons.
Anatomy of a Power Cable: Cable Design Layer by Layer, from Conductor to Oversheath
Every power cable is a stack of layers, and every layer exists for a reason. A practical walk through conductor, screens, insulation, metallic screen, armour and oversheath — and why changing one layer changes all the others.