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Insights & Resources

GN Technologies Blog

Industrial electrical insights, load-shedding resilience strategies, and technical deep-dives from the GN Technologies engineering team.

2026-11-0314 min read

Handles, Shafts and Escutcheons: Specifying the Operating Mechanism for a Switch Disconnector

A switch disconnector is ordered on its current rating and installed on its handle and shaft. How to specify the operating mechanism so it actually fits.

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2026-10-2713 min read

Cam Switches: Specifying Rotary Selector Switches for Metering and Control

The small rotary switch on a panel door is the easiest part of a board to order wrong. How to specify cam switches for metering and control duty.

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2026-10-2012 min read

Lockout/Tagout on Industrial Sites: Specifying Locking Devices That Actually Hold

A padlock is only as good as the device it hangs on. How to specify lockable isolation points on South African sites, and the failures that keep recurring.

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2026-10-1311 min read

Switch Disconnector, Circuit Breaker or Isolator: Choosing the Right Device

The three terms are not interchangeable. What isolation, load switching and protection each actually require, and how to specify the right device for the duty.

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2026-10-0610 min read

Manual vs Automatic Changeover Switches: Connecting Backup Power Safely

How changeover and transfer switches connect generators and backup supplies to an industrial installation — manual versus automatic, pole count, and standards.

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2026-09-299 min read

Electrical Safety Standards in South African Industrial Facilities: A Compliance Checklist

South Africa's electrical safety framework spans the OHS Act, SANS 10142-1 and equipment standards. A practical compliance checklist for industrial sites.

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2026-09-158 min read

Planning Electrical Infrastructure for Industrial Facilities in South Africa

A new site or expansion succeeds or fails at the planning stage. How to size capacity, sequence connections and future-proof electrical infrastructure.

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2026-09-086 min read

Electrical Emergency Preparedness for Industrial Sites in South Africa

A fault, fire or total loss of supply is not the moment to write your response plan. What an electrical emergency plan needs before it's tested.

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2026-09-019 min read

Installation Best Practices for Industrial Electrical Switchgear

Correct installation determines switchgear lifetime and safety before it ever handles a fault. Planning, cabling, earthing and commissioning done right.

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2026-08-189 min read

Sizing Switchgear Correctly: A Load Calculation Guide for South African Facilities

Undersized switchgear fails early; oversized wastes capital better spent on growth. The load calculation method for getting sizing right the first time.

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2026-08-119 min read

Fault-Finding on Industrial Switchgear: A Systematic Diagnostic Guide

Resetting a tripped breaker fast is tempting, but skipping diagnosis breeds repeat failures. A practitioner's systematic method for finding the real root cause.

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2026-07-288 min read

21 Common Questions About Battery Energy Storage Systems (BESS) Answered

Straight answers on chemistry, sizing, cost, safety, and recycling — the questions SA plant engineers ask most about battery energy storage systems.

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2026-07-218 min read

Maintenance Best Practices for Industrial Electrical Switchgear

A structured maintenance programme prevents unplanned switchgear failures and meets SANS 10142-1 and OHS Act obligations. The practitioner's guide.

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2026-07-2111 min read

The Future of Power Distribution: AI and IoT in Industrial Electrical Systems

Industrial power distribution is shifting from reactive maintenance to AI-driven prediction and IIoT-connected switchgear. What SA facilities need to know.

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2026-07-1411 min read

The Complete Buyer's Guide to Industrial Switchgear in South Africa

Procuring industrial switchgear in South Africa means weighing voltage class, fault rating, compliance, and lead times. This guide covers every stage.

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2026-07-078 min read

E-Mobility Infrastructure: Preparing South African Industries for Electric Fleets

South Africa's shift to electric fleets is accelerating, but most sites aren't electrically ready. What plant engineers need to know before EVs arrive.

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2026-06-236 min read

Solar Power Distribution for Industrial Facilities: A South African Guide

Solar PV is now a hard financial call for SA industrial facilities — but distribution and grid integration are where the real engineering challenge lies.

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2026-06-168 min read

5 Critical Challenges in Mining Electrical Systems (And How to Solve Them)

South Africa's mining sector runs some of the world's most demanding electrical systems. Five challenges that derail operations, and how to fix them.

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2026-06-035 min read

Arc Flash Safety on South African Industrial Sites: What Engineers Need to Know

Arc flash is one of the most devastating industrial electrical hazards. IEC 61482 and safe working practices can save lives and prevent costly losses.

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2026-05-287 min read

Load-Shedding Resilience: How BESS and Embedded Generation Protect Your Operations

As load-shedding threatens SA industrial output, battery storage plus embedded generation is the go-to fix for facilities that can't afford downtime.

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2026-05-206 min read

Understanding LV and MV Switchgear: A Guide for South African Industry

LV and MV switchgear are the backbone of industrial power distribution. What every SA plant engineer needs to know when specifying and maintaining it.

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2025-07-079 min read

The State of Industrial Electrical Infrastructure in South Africa 2025

A frank assessment of South Africa's industrial electrical landscape in 2025: what's failing, what's improving, and where the opportunities lie.

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