20 kVA Generators

Reliable 20 kVA Diesel Generators

A 20 kVA generator offers a practical balance of power, efficiency and portability. It can support small commercial premises, workshops, farms, construction sites and larger homes, as well as equipment operating in remote locations.

Our range consists of high-quality Cummins and Pramac generator sets, powered by genuine Cummins, Perkins and Yanmar diesel engines. Every model has a silent, weather-resistant canopy to reduce operating noise and protect its internal components. As an authorised Cummins CPG reseller and an authorised Pramac dealer, Global Generators can also offer highly competitive UK pricing across the range.

Each 20 kVA diesel generator is designed for dependable standby or prime operation. A standby set can provide reliable power during unexpected power outages, while a prime-rated unit can be used for longer periods where mains electricity is unavailable or impractical. Correct loading and regular maintenance help support dependable performance over the long term.

All models operate at 50Hz and are suitable for customers throughout the UK and applicable international markets.

Single Phase and 3 Phase Power

Choosing the correct phase configuration is essential. The right option depends on the voltage and electrical supply required by the equipment you intend to run.

A 20 kVA 3 phase generator distributes its electrical load across three phases. This makes it suitable for commercial and industrial machinery, pumps, motors and other equipment designed for a 400V three phase supply.

For applications that specifically require diesel power, a 20 kVA 3 phase diesel generator provides efficient performance without relying on an existing grid connection. Its enclosed construction also makes it suitable for demanding outdoor environments.

A 20 kVA 3 phase genset may be used as a fixed standby unit or as a source of temporary power. Where fuel efficiency, durability and extended running capability are priorities, a 20 kVA 3 phase diesel genset is a dependable choice.

Single phase models are intended for equipment that operates from a standard 230V supply. A 20 kVA single phase generator can support homes, offices, workshops, retail premises and other sites without 3 phase equipment.

A 20 kVA single phase diesel generator combines this familiar output type with the durability and economy of diesel power. It is particularly useful where several higher-demand single phase appliances must operate at the same time.

For planned off-grid use, a 20 kVA single phase genset can provide a self-contained power source for tools, lighting and essential equipment. A 20 kVA single phase diesel genset may also be installed as part of a home or business backup system.

Built for Practical, Dependable Operation

Every generator in this category is supplied in a silent canopy. This helps reduce noise levels while protecting the diesel engine, alternator, control panel and electrical components from the surrounding environment.

The integrated fuel tank supports self-contained operation without requiring a separate day tank for normal use. Fuel tank capacity varies between models, so the required running time should be considered when selecting a generator. An automatic transfer switch can also be supplied where the generator needs to start and take over following a mains failure.

A well-specified generator ensures that the connected load receives stable power output within the set’s rated limits. Correct sizing remains important, particularly when powering motors, pumps, compressors or other equipment with a high starting current.

Our expert team has more than 50 years of combined generator industry experience. We can help you compare models, understand prime and standby ratings, assess starting loads and select the appropriate phase configuration.

Cummins and Pramac Generators Available from Stock

Global Generators is a leading stockist with a wide range of generators held in our physical inventory. Stock availability supports fast delivery across the UK, with next-day delivery potentially available depending on the model and destination, alongside efficient export to customers worldwide.

Our position as an authorised Cummins CPG reseller and an authorised Pramac dealer provides access to genuine products and manufacturer-backed technical support, offering added peace of mind. It also allows us to offer some of the UK’s best pricing on Cummins diesel generators.

A Cummins 20 kVA diesel genset is built around proven engine technology and components selected for demanding power applications. These generators are suited to both emergency backup and regular operation, subject to the applicable prime or standby rating.

We can assist with product selection, delivery and export arrangements. Support is also available when customers require guidance relating to installation, commissioning, servicing or compatible accessories.

Common Applications for a 20 kVA Generator

The output available from a 20 kVA generator makes it a practical power solution for a broad range of applications, including:

• Backup power for homes and small commercial premises
• Tools, lighting and welfare facilities on construction sites
• Agricultural equipment, workshops and farm buildings
• Pumps, motors and selected light industrial machinery
• Events, mobile facilities and temporary power requirements
• Off-grid buildings and operations in remote locations
• Essential office, retail and communications equipment

The actual equipment that can be powered depends on its running wattage, starting current and how many loads will operate simultaneously. Allowing sufficient spare capacity can reduce overload risks and help the generator perform more efficiently.

20 kVA Generator FAQs

Reserve Your 20 kVA Generator

Contact our experts today for more information about our range of 20 kVA generators or to reserve your generator. Speak to us by phone, WhatsApp or email, or submit your requirements through our online enquiry form.