Earthing & lightning protection, explained.
Clear, practical guides on choosing, sizing, and installing earthing and lightning-protection systems — written for engineers, contractors, and buyers. Free to read, no sign-up.
Earthing electrode types: pipe, plate, and rod — which to specify
Pipe, plate and rod electrodes compared — what each is good for, how IS 3043 sizes them, and why the copper bonded rod has become the modern default for most new work.
Sizing an earthing strip: copper vs GI, cross-section, and fault current
How to choose the right earthing / grounding strip — material, the cross-section the fault current actually demands, corrosion and burial — so the conductor is never the weak link in the earth path.
Earthing in rocky and high-resistivity soil: when conductive concrete wins
When driven rods simply cannot reach the resistance target — the options for hard, dry and rocky ground, and where a conductive-concrete electrode is the right answer.
How to install an ESE lightning arrestor: mast, down-conductor, and earth termination
The full ESE installation sequence under NF C 17-102 — mast height and placement, tip mounting, twin down-conductor routing, the dedicated earth pit, the surge-event counter, and the continuity test that closes it out.
Earth-enhancing compound: when to use it and how to apply it correctly
Graphite-based backfill versus the old salt-and-charcoal pit — what it does to soil resistivity, how to mix and cure it, and the dosage that actually lands you under the resistance target.
Earth pit covers: types, loading classes, and how to choose
Which pit cover for which site — cast iron, GI, SMC and polymer — chosen by load rating, corrosion exposure, and whether the cover sits in a step-potential zone.
The difference between earthing and grounding (and why it matters)
Indian electrical practice uses "earthing"; American practice uses "grounding". They mean the same thing — almost. Here is what each term actually denotes, the standards behind both, and when the distinction is more than terminology.
Earthing for solar plants: complete design and BOM guide
How to design the grounding system for a 1–10 MW utility-scale solar plant — from soil resistivity survey through DC and AC earthing networks, lightning protection, and the BOM that goes into the tender.
How to install a copper bonded earthing rod: step-by-step with IS 3043
The full earthing-pit construction sequence — site selection, hole sizing, rod driving, compound activation, strip termination, cover seating — followed by the commissioning resistance test that closes out the IS 3043 checklist.
Copper bonded vs GI earthing rod: a buyer’s guide for Indian projects
Side-by-side comparison of the two earthing-rod families that dominate Indian B2B procurement — with the real-world cost, lifetime, and standards-compliance math that should drive the choice.
How to size an earthing electrode for a 500 kVA substation
A worked example from soil-resistivity survey to electrode count, using IS 3043:2018 sizing tables. The numbers below are typical of a Tier-2 city substation in Indian soil.
ESE vs Franklin lightning rod: when each one makes sense
A neutral comparison of the two dominant lightning-rod technologies, the standards behind them (IEC 62305 vs NF C 17-102), and the site profile that should tip you to each.
Why UL 467 specifies a 250-micron copper coating
A short technical walk through the corrosion math behind UL 467’s thickest copper-bonded-rod variant — and what specifying engineers actually get for the extra metal.