Home » load shedding

load shedding

How to keep Desktop Computer ON during Power Outages

How to keep Desktop Computer ON during Power Outages

Power outages… haven’t we all experienced them. It so happens that we went through Stage 6 “Load Shedding” recently. This means we did not have electricity for a total of seven and a half hours every day for an entire week. Bad, hey?

As far as work is concerned I just needed to keep my desktop computer working. How did I solve the problem? I purchased an Inverter. If you need to keep many appliances working during a power outage then you might need a larger Inverter or even a generator but those come with a hefty price tag. In my particular case the Inverter I got keeps my desktop computer going for over 12 hours… twelve hours and the Inverter still had 10% load – amazing!

I prefer a desktop to a laptop for the following reasons: Processor – desktop processors are larger and this means that desktop processors are usually more powerful than laptop processors; Internal storage – desktop computers can have multiple internal storage drives installed; Keyboard – desktops can make use of full-size keyboards, including a number pad; Screen size – desktop monitors can be 19″ or larger; Upgrading – most components in a desktop are removable, making it easier to upgrade. Desktop cases are larger, providing more room inside to add and remove hardware, use tools, and organize cables; Repair – repairing a desktop computer is generally easier because most of the hardware can be purchased off the shelf at any local computer retail store.


For work purposes I needed an Inverter that would keep the following working all the time:

  • Desktop computer
  • LED monitor (computer screen)
  • Wifi router (to access the internet)
  • Desk lamp

What I Particularly Like about this Inverter

  • the battery lasts more than 12 hours
  • neatly packed with housing and wheels – you can easily move it around
  • the possibility of connecting inverter to a solar panel for further energy savings
  • generators produce smoke (carbon monoxide is deadly) and can be noisy (never use a generator indoors) – inverters do not produce smoke. Inverters are silent.

How Much Power does a Computer Use?

A complete desktop uses an average of 200 Watt hours (Wh). This is the sum of the average consumption per hour of the computer itself (171 W), the internet modem (10 W), the printer (5 W) and the loudspeakers (20 W).

How much Power do Laptops and Desktop Computers use in Sleep Mode?

5-10 watts.

The typical laptop uses 15-60 watts of energy when in use – and just 2 in sleep mode. The typical desktop and monitor consume 80-320 watts when in use, but just 5-10 watts in sleep mode.

Specifications of the Inverter I am Now Using

My friend Jason Adriaanzen (electrician) recommended the 680Watt Solar Inverter Trolley Chadha Power 12V.

How Long does the Battery Last?

The battery on this Inverter lasts 1500 (on thousand five hundred) cycles. Today I used the Inverter for 12 hours. That is 1 cycle.

Supplier and Electrician Contact Details

Invest Solar – Norwood

Juan (Mobile/ WhatsApp): 068 194 9729
[email protected] 
77 Grant Avenue
Norwood, Johannesburg
010 025 0186

Jason Adriaanzen (Electrician)

082 521 7548


R7 400


  • Use a multi socket surge protector
  • Keep inverter plugged into socket/ solar panel
  • Add solar to save money on your utility bill.
LTE Mobile WiFi Router to Keep your Laptop Connected to the Internet during Power Outages

LTE Mobile WiFi Router to Keep your Laptop Connected to the Internet during Power Outages

Without any warning South Africa was plunged into darkness with Stage 4 Load Shedding (rotational load shedding, 4- 5 hours at a time). Load shedding continued for five days.

You can keep your laptop connected to the internet through your smart-phone.

There is an alternative way. Connect your laptop to the internet by using a mobile WiFi router. You can connect up to 5 laptops to the WiFi and once charged this WiFi router will keep you going for 8-10 hours.

The cost is approx R1200. I purchased mine (a M7300 LTE Advanced Mobile WiFi Router) at Matrix Warehouse but there are various retailers selling the device. You will find them on Google.

Prevent Load Shedding from Damaging Your Computer

Prevent Load Shedding from Damaging Your Computer

Prevent Load Shedding from Damaging Your Computer

Load Shedding is bad for everything: your productivity, the bottom line and in extreme cases a situation of life and death… a “world class” African city with load shedding?

On Wednesday, 10th June we had  un-announced load shedding that started at 6pm. I visit ewn (Eye Witness News) daily to check load shedding schedules.


I visited the aforementioned page on Wednesday, 10th June. There was no load shedding planned for that afternoon and evening.

The power went off at 6pm. The power was again restored at about 10.30pm. Later that night I walked into the study and noticed a burning smell. I looked out the window to see whether there was a veld fire. All seemed to be in order.

The next morning I sat at my desk and my P.C. did not work. I took it to a nearby Matrix Warehouse and I was told that both the Motherboard and the CPU had burnt.

I had to replace the entire computer because besides the a.m. the DDR2 Ram was not compatible with current gen components.

Are ESKOM/ City Power not competent to schedule load shedding correctly?

I got the computer working again at a cost of R5697.00!

I also purchased a Multiplug ‘Surge Protector’ that protects electrical appliances from lightning surges. I purchased the WP5 (Wonder Plug 5×5 Multiplug). It costs around R300 at Matrix Warehouse. The Multiplug has a R20 000 warranty.

Prevent Load Shedding from Damaging Your Computer-2

How to prevent load shedding from damaging your desktop, laptop and other devices?

  1. if you are able to forecast load shedding shut your computer down properly before load shedding starts and pull the plug from your wall socket. If the load shedding is un-announced (my case on Wednesday) pull the electrical cable from your wall socket (unfortunately you won’t have time to shut your computer down properly but at least the subsequent surge that will occur when the power is restored will not do any damage).
  2. Use a ‘Surge Protector’ for your electrical appliances.
%d bloggers like this: