Backup Power Systems Installation in Midrand
Keep your Midrand home, business unit or office running through every power cut.
Inverter and battery systems for Midrand homes, small business units and light commercial premises, sized around the loads and supply you actually have.
What matters for a Midrand property
The backup loads and operating requirements drive the system from the start. A home usually needs lights, a fridge, the router and security gear kept on, while a small business unit may also need computers, a server and point-of-sale terminals to stay trading, and the two call for different sizes.
Available installation space matters next. Some Midrand properties have a garage or plant room that suits the equipment; others have far less room, which can influence where the inverter and battery mount and how cables reach the board.
The electrical supply is the third factor. A commercial unit on a three-phase supply may need a different design from a single-phase home, but not every three-phase property requires a three-phase inverter. The existing supply, the distribution board, the load requirements and equipment compatibility all have to be assessed before the system is specified.
What can stay on
A starting list of the loads usually worth backing up. Final sizing is confirmed on site.
- Lights in the home or unit
- The fridge and a freezer
- The Wi-Fi router and fibre box
- Computers and point-of-sale terminals
- Security cameras, recorder and the alarm
- A gate motor, where compatible
How it works
Cut the mains
A backup power system keeps your essential circuits running when the grid drops. Try the simulation below to see how power flows from the mains, through the inverter and battery, to the circuits you choose to back up.
- Lights
- Fridge
- Router
- CCTV
- PCs
Normal supply: mains power passes through the inverter to your essential circuits.
This is a visual simulation only and does not control physical electrical equipment.
Sizing estimate
How big a system do you need?
Wattages are typical estimates. Actual equipment consumption and the final system specification must be confirmed during a site assessment.
LED lights
10 W each
Fridge or freezer
150 W each
Wi-Fi router and fibre box
20 W each
CCTV cameras
8 W each
CCTV recorder
25 W each
Desktop PC with monitor
150 W each
TV or screen
100 W each
Split aircon, 12,000 BTU
1100 W each
Microwave
1200 W each
Kettle
2000 W each
Connected load
690 W
Suggested inverter
3 kVA
Estimated battery
5.12 kWh
Our smallest system is 3 kVA with a 2.56 kWh battery.
Inverter size allows for start-up surges from motors like fridges. Battery size allows for usable capacity and conversion losses. Geysers and stoves are best left off the battery. This is a starting figure, not a quote.
This calculator is a preliminary sizing aid and does not replace a site assessment, inverter compatibility checks, battery discharge limits, surge assessment or final electrical design.
The process
How your backup power installation works
- 1
List the loads
Note every appliance and system you want kept running, and how long it needs to run for during an outage.
- 2
Check the supply
Confirm whether the property is single-phase or three-phase and review the distribution board with you during the visit.
- 3
Written quotation
Receive an itemised quotation that reflects the supply, the loads and the available installation space.
- 4
Agree the design
Confirm the inverter and battery specification, including whether a single-phase or three-phase approach is appropriate.
- 5
Installation
Fit and label the system, routing cables to the distribution board.
- 6
Test and handover
With you present, the mains is switched off so you can see every backed-up circuit stay running.
FAQs
Backup Power Midrand — FAQs
Related pages
Related backup power pages
Get a quote
Get a backup power installation quote
Tell us what you need to keep running and how long for. We'll come back with a clear, itemised quotation for your Midrand property.