Residential Generator Installation
We install house and estate standby sets where they can be reached for service, connected to cover the circuits you need during an outage.
Generator installation
Generator Installation Across Gauteng
We install standby generators across Gauteng, covering placement, electrical connection, ATS and controller setup, and commissioning. We have repaired and serviced generators since 2000, so we install every set with its next service in mind, and we quote the full scope in writing after a site assessment.
Callout fee waived when you accept our written quote. 1-year workmanship guarantee. See prices
- Homes, commercial and industrial
- ATS and controller setup
- Commissioning before handover
- Electrical CoC for changeover switches
Installation types
Generator Installation Services
Choose the installation that matches your property. We plan a portable petrol setup very differently from a large diesel plant, and we quote only the items your site needs.
Commercial Generator Installation
We install generators for offices, shops, complexes and other business premises, planned around your trading hours and your building load.
Industrial Generator Installation
We install larger diesel sets for factories, plants and heavy standby, with access, lifting and the base planned before the set arrives.
Standby Generator Installation
A canopy set that waits for a mains failure and starts on its own, so nobody has to drag out a portable frame in the dark.
Diesel Generator Installation
We place and commission diesel standby and commercial sets, including the fuel, cooling and battery checks a diesel installation needs.
Petrol Generator Installation
We set up smaller petrol and open-frame generators with a safe outdoor position and a proper connection for the loads you want to run.
ATS & Automatic Start Setup
We integrate the changeover and automatic start, so your standby set starts and takes the load when the mains fails. We issue and sign the electrical Certificate of Compliance for the changeover switches we install.
Generator Controller Setup
We configure the controller during installation, including automatic start, engine protections and the alarms the set should show.
Single-Phase Generator Installation
We install smaller residential and light-commercial sets on a single-phase supply.
Three-Phase Generator Installation
We install larger commercial and industrial sets where the supply and the generator are both three-phase.
Generator Installation for Homes & Businesses
A home installation is usually a standby set that is ready the moment the supply drops. A business installation may serve a shop, an office, a complex or a warehouse. An industrial installation is a larger diesel, where the machine, the access and the load work at a different scale.
We also handle replacement installations, where an older set comes out and a new one goes in. We set up smaller petrol and open-frame machines, and we install diesel canopy sets for standby duty.
Once your set is running, we look after it with generator repairs, generator servicing and generator maintenance, the core of what we have done since 2000. If your existing set has a fault, book a repair first; replacing a generator is not always the answer.
What Is Involved in Installing a Generator?
A typical installation covers placing the set, preparing a base where one is needed, connecting it to your electrical installation and commissioning the agreed scope.
Many jobs also include automatic starting, an ATS and controller setup. Your quote states clearly whether you are getting a manual changeover or a fully automatic system, so you know exactly what the set will do when the power fails.
We issue and sign the electrical Certificate of Compliance (CoC) for the changeover switch installations we carry out. Keep the certificate with your property records, because insurers and buyers can ask for it.
Generator Site Assessment
Our site assessment covers the items below, because two sites with the same kVA can need very different work.
- Electrical requirements
- Generator size
- Phase
- Property layout
- Generator position
- Ventilation
- Access
- Noise considerations
- Exhaust routing
- Fuel requirements
- ATS or changeover requirements
We build your written quote from this assessment, so you pay only for the items your site needs.
Choosing the Correct Generator Size
Size your generator from what the site actually runs, not from a canopy that looks large enough. We check:
- Connected load
- Starting current
- Motors
- Refrigeration
- Pumps
- Lifts
- UPS equipment
- Sensitive electronics
- Single-phase or three-phase supply
- Standby or prime application
- Future requirements
Read our guide to generator sizes and the difference between generator kVA and kW. Many standby sets are rated at a power factor of 0.8, but always work from the figure on your own data plate.
Where Should a Generator Be Installed?
We position the set so it runs safely and can still be serviced later. We look at:
- Ventilation
- Access for maintenance
- Exhaust routing
- Distance from occupied areas where that applies
- Weather protection
- A generator base or plinth
- Service access
- Safe electrical integration
Leave exhaust routing and electrical connections to the installer. Exhaust fumes contain carbon monoxide, so we route them away from windows, doors and occupied rooms, and we make every electrical connection with the board safely isolated.
Automatic Generator Starting & ATS Integration
On an automatic system, the sequence runs like this:
- Mains power fails.
- The ATS or controller detects the failure.
- The generator receives a start command.
- The generator starts.
- The ATS transfers the load to the generator.
- Mains returns.
- The load transfers back.
- The generator runs a short cooldown and shuts down.
When an existing system fails at one of these steps, our ATS repairs and generator controller repairs services fix it, and our guide to generator controllers explains the modules and their alarms.
Generator Controller Setup During Installation
During installation we set up the controller for your site, including:
- Automatic start setup
- AMF configuration
- ATS interaction
- Voltage and frequency monitoring
- Engine sensor configuration
- Alarm setup
- Maintenance timer configuration
- Remote-start input configuration
- Commissioning
We set up Deep Sea, SmartGen, ComAp and Datakom controllers, and we keep every engine protection active so the set shuts down safely when something goes wrong. Read more about controller makes and modules on generator controllers.
Single-Phase and Three-Phase Installation
Single-phase installation is the smaller residential or light-commercial path. Three-phase installation is the commercial and industrial path, where the building supply and the generator are both three-phase.
A three-phase set can feed single-phase loads, but only up to the limit of each phase, so we spread the loads across the phases when we connect it. Read the full comparison in single-phase vs three-phase generators.
How an install proceeds
Our Generator Installation Process
Every installation follows these steps, scaled to your generator and site.
01
Site assessment
We look at the property, the supply and what the generator needs to carry.
02
Confirm generator requirements
We agree the fuel, the duty and how the set will start.
03
Confirm generator size
We size the set from your load and any existing data plate.
04
Confirm single-phase or three-phase
We match the generator to the supply it will work with.
05
Select installation position
We weigh ventilation, access, exhaust and noise together.
06
Assess electrical integration
We plan how the generator connects to your existing installation.
07
Determine ATS/changeover requirements
We agree on automatic transfer or a manual changeover.
08
Prepare generator position/base where required
We prepare a plinth or base when the site needs one.
09
Install generator
We place the set in the agreed position.
10
Complete required integration
We make the electrical and control connections in your scope.
11
Configure controller/automatic start where applicable
We set up the controller and automatic start on sets that use them.
12
Test generator operation
We start the set and check voltage, frequency and running behaviour.
13
Test automatic transfer where applicable
We test the ATS changeover and the return to mains with you.
14
Commission the installation
We confirm the whole agreed scope runs as intended.
15
Issue the electrical CoC
We issue and sign the Certificate of Compliance for the changeover switch installation.
16
Explain future servicing and maintenance
We explain when the first service is due and how a maintenance plan works.
Generator Servicing After Installation
A generator still needs servicing and maintenance after it is installed, including sets that run only during outages. Oil, filters, coolant, the battery and a start test do not wait for a high hour reading.
We book that work through generator servicing and generator maintenance. The right interval follows the manufacturer’s schedule for your engine and how many hours it runs; see how often a generator should be serviced and generator service intervals. Our cost guide puts a basic service at R900 to R1,800.
Generator Installation Service Areas
We install generators across Gauteng, including Johannesburg, Pretoria, Sandton, Centurion, Midrand, the East Rand / Ekurhuleni, Randburg, the West Rand and the Vaal / Southern Gauteng. To book a site assessment, contact us or read how generator callouts work.
Common Questions
Generator installation questions
How do I know what size generator I need?
Your generator size follows the connected load, the starting current of motors and pumps, and whether your supply is single-phase or three-phase. Send a list of what must run and a photo of any existing data plate. Our size calculator gives you a starting figure, and our site assessment confirms it.
Do you install generators for homes?
Yes. We install residential standby generators and plan each one around your house, the best position and your supply. We also repair, service and maintain the set afterwards.
Do you install commercial generators?
Yes. We install generators for offices, shops, complexes and similar premises, and we quote each job from the generator, the access and the electrical integration.
Do you install diesel generators?
Yes. Diesel standby, commercial and industrial sets make up most of our installations. We also set up smaller petrol generators.
Can a generator start automatically when power fails?
Yes, when the installation includes a controller and an ATS designed for automatic operation. When the mains fails, the controller starts the set and the ATS moves the load. A manual set needs that equipment added before it can start on its own.
What is an ATS?
An ATS (automatic transfer switch) moves your load between the mains and the generator. It works with the controller so the set starts and takes the load when the power fails. It carries live mains, so only a qualified person should open or wire it.
Do you issue a Certificate of Compliance for the changeover switch?
Yes. We issue and sign the electrical Certificate of Compliance (CoC) for the changeover switch installations we carry out. The changeover keeps the generator and the mains apart, so the set can never feed power back into the supply.
Where should a standby generator be positioned?
Position a standby generator where it has good ventilation, a safe route for the exhaust, access for service and a sensible distance from occupied rooms. Weather protection and a solid base matter too. We choose the exact spot with you on site.
Does an installed generator still require servicing?
Yes. Low running hours do not replace oil, filters, coolant, battery care or a start test. We service and repair Cummins, Perkins and Caterpillar generators, along with the other brands we list, so the team that installs your set can maintain it.
Still unsure what the fault is? Call or WhatsApp 082 057 4605 for onsite diagnosis.
Related Pages
Size, control and the work after installation
- Generator Sizes Size bands from portable sets to large plant
- kVA to kW How the two ratings relate
- Single-Phase vs Three-Phase Which supply the set belongs on
- Changeover Switches Repairs and installation with the CoC
- Generator Controllers Modules, programming and replacement
- Controller Repairs Faults on an existing module
- ATS Repairs Automatic transfer faults
- Generator Servicing The planned service after install
- Generator Maintenance Readiness between services
- Generator Callouts How a visit is booked
- Commercial Generator Repairs Business standby installations
- Industrial Generator Repairs Larger plant and prime sets
- Standby vs Prime Which duty the set is rated for
- Contact Request a quote
What to send before we attend
These details help us plan the visit and bring the right parts. Send what you can on WhatsApp; if you can’t find the model number, we still book the visit.
- Location
- The suburb or site, so the visit can be booked in the right area.
- Make and model
- The generator brand and model, if they are known.
- kVA
- The size printed on the data plate.
- Fuel type
- Diesel, petrol, LPG, natural gas, or dual-fuel.
- Controller model
- The module name on the panel, when it is visible.
- Fault or alarm
- What the set does, and any text on the screen.
- Photos
- The generator, the data plate, and the controller or alarm. Send these on WhatsApp.
Free written quote
Planning a generator installation?
Send the suburb, the fuel and the size if you have it. We arrange a site assessment and give you a written quote for the full installation.
- Call
- 082 057 4605
- Message us on WhatsApp
What happens next
- We reply with questions about the generator, or to book a visit.
- A technician comes to you. For a breakdown we arrive within 1 hour.
- The fault is diagnosed on site and you get a written quote. No work starts until you accept it.
Charlie, lead technician: Degree in Mechanical Engineering, Degree in Electrical Engineering, Diesel Plant Fitter. Generator specialists since 2000.