Electric fencing - the facts

June 2005 Perimeter Security, Alarms & Intruder Detection, Products & Solutions

Traditional physical barriers such as fencing, walling and palisades in conjunction with barbed or razor coils are evident at residences and industrial sites throughout South Africa.

Many premises are fitted with sophisticated alarm systems, as well as closed circuit television (CCTV) systems. Many of the systems may even be linked to 24 hour armed reaction control rooms, effective in notifying of an intruder's entry.

It is Nemtek's opinion that there is nothing to compare with electric fencing when one wishes to ensure that intruders do not enter where they are not wanted.

Not only will the intruder be faced with a physical barrier, they will also be exposed to high voltage pulses that deter the most hardened criminal. An electric fence not only acts as a physical barrier, but also acts as an early warning alarm system. The electric fence can be connected to 24 hour armed reaction companies, advising of an attempt of entry to premises before intruders actually gain access. There is no doubt, an electric fence is an asset to home owners and businesses alike, offering effective security and peace of mind.

Practical tips on electric fencing

* Insulated HT cable must be used between the energiser and the fence.

* Undergate HT cable to be used when continuing an electric fence across an entrance or roadway.

* Earth spikes should be inserted and connected along the full length of the fence, and not more than 30 m apart.

* Earthing of the electric fence should always be isolated from the mains earth supplied.

* For exceptionally long fences, it is advisable to segment the fence using additional energisers.

* If at all possible, do not use barbed or razor wire for electric fence installations.

* Avoid installing an electric fence parallel to overhead power lines.

* Adhere to SANS60335-2-76 specifications with regards to warning signs, height restrictions of wall-top fencing as well as physical barriers for free standing fencing.

* Use only CE approved electric fence energisers.

* In areas where lightning can be experienced, it is always wise to protect the energiser by installing lightning diverter/arrestor kits.

* Use wall mount loops on wall-top fencing to prevent lifting or separation of fence wires by intruders.

* Where possible, use like materials for connections to the fence in order to avoid chemical reaction between unlike materials.

* Ensure vegetation is kept clear of the electric fence at all times (remember wet vegetation is likely to hang lower than when dry).

* Keep a healthy distance between neighbouring fences.

* Poor quality insulators have a tendency to crack or deteriorate in constant sunlight. Ensure that insulators used have been moulded using ultraviolet stabilised materials.

For more information contact Nemtek Kya Sand, 011 462 8283, [email protected], www.nemtek.com



Credit(s)




Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Hikvision launches AcuSeek NVR
Surveillance Products & Solutions AI & Data Analytics
By integrating natural language interaction, Hikvision’s AcuSeek NVR enables precise video and image retrieval within seconds, marking a transformative milestone for the security industry's advance into intelligent and efficient applications.

Read more...
Analyse, automate, and optimise logistics processes
neaMetrics Surveillance Transport (Industry) Products & Solutions Logistics (Industry)
In today’s rapidly evolving logistics sector, the pressure to improve process efficiency, optimise resource usage, and ensure seamless security is more intense than ever. Smart, proactive surveillance is no longer a luxury — it is a critical operational necessity.

Read more...
How intrusion protection helps secure O&G operations
Surveillance Perimeter Security, Alarms & Intruder Detection Industrial (Industry)
For O&G operators in Africa, physical security remains one of the biggest considerations, particularly when it comes to perimeter protection and the ability to mitigate intruder-related incidents.

Read more...
Advanced surveillance storage from ASBIS
Infrastructure Surveillance Products & Solutions
From a video storage solutions perspective, SkyHawk drives, designed for DVRs and NVRs, offer high capacity, optimised firmware, and a reliability workload rating of hundreds of terabytes per year.

Read more...
New AI perimeter app package
Dallmeier Electronic Southern Africa Perimeter Security, Alarms & Intruder Detection
With the new AI Perimeter App Package, Dallmeier has extended the application range of its neural AI perimeter network. Previously only available for the Panomera S4 Perimeter camera, this technology is now also available for additional models.

Read more...
JVA 4-line LCD keypad
Perimeter Security, Alarms & Intruder Detection
The JVA 4-line LCD keypad is integral to the JVA Security Electric Fence product range and provides a centralised interface between the customer and their perimeter security solution.

Read more...
Gallagher’s Integrate 360 event in Durban
Gallagher News & Events Perimeter Security, Alarms & Intruder Detection
Gallagher Security held its Integrate 360 event in Durban, South Africa. The event attracted 65 channel partners, end users, and consultants from across KwaZulu-Natal and broader South Africa to showcase the latest in Gallagher’s technology suite.

Read more...
DoorBell with built-in AI
Ajax Systems Access Control & Identity Management Products & Solutions Smart Home Automation
Ajax Systems has announced the release of Ajax DoorBell, which features built-in AI, an IR sensor, and app control, seamlessly integrating into the Ajax ecosystem to ensure efficiency and security confidence.

Read more...
Kaspersky KATA 7.0 for targeted attack protection
Information Security Products & Solutions
] Kaspersky has announced a major update to its Kaspersky Anti Targeted Attack (KATA) including enhanced network detection and response (NDR) capabilities with deeper network visibility, internal threats detection and other critical security features.

Read more...
Benchmark in long-range surveillance
Duxbury Networking Surveillance Products & Solutions
Duxbury Networking says the long-range, high-resolution monitoring AXIS Q1809-LE bullet camera has been enhanced further with integration into Milestone XProtect to set a new standard for forensic-level image clarity, intelligent event detection, and enhanced security management.

Read more...










While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd. | All Rights Reserved.