What Is An Electrical Surge?

An electrical surge is a temporary, very short (less than a second), increase in the electrical supply voltage or current or both. Another name for an electrical surge is a ‘spike’ in the supply. People call electrical surges ‘spikes’ because if you look at the electrical supply with some types test equipment, for instance an oscilloscope, the rise in voltage (or current or both) looks like a spike on the oscilloscope display. Electrical surges can vary in size from a couple of hundred volts to many millions of volts.


 

What Causes Electrical Surges?

Electrical surges are disturbances to the electrical supply. Many different events can cause electrical disturbances for instance:

 

What Damage An Electrical Surge Can Cause?

An electrical surge can destroy microcomputers. Microcomputers are the most vulnerable domestic appliance. A PC contains many microcomputers. ‘Electronic appliances’ like TVs, Hi-Fi and game consoles also contain microcomputers. Most domestic appliances contain microcomputers, for instance washing machines, cookers, and central heater timers. An electrical surge can destroy a microcomputer so making the parent appliance, for instance the PC or game console, useless. An electrical surge can damage any electrical appliance that is plugged in. All electrical parts are vulnerable to electrical surges. Electrical parts are designed to withstand an electrical surge of a certain level, usually about double the normal electrical supply.

 

How Electrical Surge Protectors Work

Electrical surge protectors work by diverting the extra energy in the electrical surge away from the main circuit, usually to ’earth’. In normal circumstances the electrical flow is along the ‘Live’ line (red), through the electrical surge protector, through the electrical appliance and back to the mains supply by the ‘Neutral’ line (black). Electricity flows through the electrical surge protector from connection 1 to connection 2 (green arrow). If the electrical surge protector detects an electrical surge it diverts the extra electrical flow to earth. When the surge protector detects an electrical surge it opens the path between connection 1 and connection 2 and closes the path between connection 1 and 3. When there is an electrical surge the electrical flow is from the ‘Live’ line (red) through connection 1 of the electrical surge protector then to earth by connection 3 (green arrow). The extra electrical flow taken away from the electrical appliance and sent to the earth line. If the extra electrical does not flow through the electrical appliance it cannot damage the electrical appliance.

 

How to Protect Against An Electrical Surge.


Brands we use

We can put a guarantee on workmanship but unfortunately we cannot always rectify or take responsibility for faulty parts. We only use the best brands to provide our clients with the best! Using the right brand increases longevity of the specific item and knowing that safety precautions has been tested.

 

About Us

Welcome to Lecon Electrical Services

We deliver a promise to quality, professional and superior customer service.

Available to all Gauteng areas throughout Johannesburg and Pretoria and surrounding suburbs priding ourselves on professional workmanship ,10 years of knowledge and technical skills.

We strive ourselves with a can do attitude to any problem. Lecon Electrical believe in a "do it right the first time" trade mentality as every project/job is important to us. Residential or Commercial service we do it all! From a new power outlet in an existing home to new factory fit outs, domestic rewires to commercial lighting design and maintenance.

Whether you’re a property owner, tenant, manager, facility manager, business owner? We are looking forward to hear from you about.

We will call you back !

 

Why us?

24/7

Hour services

1 Year

Workmanship guarantee

R0

Quotation / Call out

R385

Fault finding fee


 

15 - 40min

Response time


 

 

Service areas

Our Service cover/s most of Gauteng. We provide a 15-40min response time to any call out our technician will be in contact with you directly to establish time.


 

 

Our services

Listed below is just a few of the services we offer. We can take care of any project you require if it's commercial residential big projects or even the smallest we are here to help

  • Generator Installation

    Due to localized power outages or Load shedding. With the right installation you can have all the comfort of running your appliances simultaneously. ...Read more


  • Geyser Electrical Repair

    Cold water or perhaps to hot? A faulty thermostat can be very dangerous it's important to have a plumber or electrician have a look at your geyser.


  • Pool pump repair

    Swimming pool pumps are constantly overworking its normal for breakers/fuses to give in from time to time.


  • Distribution board

    Wire / Rewire / Faulty breakers / Fuses or burned switches, Upgrading of circuits or just to tidy up tangled wire/s it's important to keep your DB Board tidy and in good condition.

  • Surge protection

    Voltage surge / spike or transient is a sudden and unscheduled event. It occurs only within a short period of time but more than enough to destroy devices if there is no counter measure.

    ...Read more

  • Voltage saving solutions

    Electricity bills are sky rocketing and there is a way to save a little


  • General Installation & Repairs

    Power tripping, overload, fan installation, move plug points we can assist with any electrical needs


  • Lights

    New or repairs to Indoor / Security / Commercial we can provide you with the right lighting type to suite your needs. Proper lighting can set a mood or even increase sales, differentiate space according to studies....Read more

Brands we use

We can put a guarantee on workmanship but unfortunately we cannot always rectify or take responsibility for faulty parts. We only use the best brands to provide our clients with the best! Using the right brand increases longevity of the specific item and knowing that safety precautions has been tested.