Generators
240v generators keep lights, chargers and corded kit running when the mains is nowhere near. Proper site backup power for real working conditions.
When you're on a plot with no temporary supply, or the power keeps dropping out mid-job, this is the kit that keeps work moving. These 240v generators cover everything from small generators for chargers and site lighting to portable generators and petrol generators that will run heavier site tools. Match the output to your start-up load, not just the running watts, and you'll avoid tripping it every time a motor kicks in.
What Are 240v Generators Used For?
- Running site lighting, battery chargers and small corded tools on plots, refurbs and outdoor jobs where there is no reliable mains supply.
- Powering saws, mixers, drills and other 240v equipment during first fix or maintenance work when a temporary board is not in place yet.
- Keeping cabins, test gear and essential kit live during outages, so site backup power is there when the supply drops without warning.
- Providing backup power generators for home or workshop use when you need to keep fridges, freezers, routers or key appliances going during a cut.
- Supplying portable power for mobile trades working out the van, especially for call-out work, fencing, fit-out and jobs well away from a fixed socket.
Who Uses These on Site?
- Builders and general site teams use 240v generators to keep lighting, chargers and corded tools running on new plots before permanent power is connected.
- Groundworkers and landscapers swear by portable generators for outdoor jobs where mixers, pumps or small power tools need a supply well away from the building.
- Sparkies use site generators for temporary power, testing setups and keeping battery platforms charged when they are moving room to room or working on cut-off supplies.
- Roofers, fencers and maintenance teams reach for small generators when the job is outside, access is awkward and dragging long leads back to a building is more trouble than it is worth.
- Homeowners and facilities teams use backup power generators to cover the basics during outages, especially where freezers, heating controls or routers cannot just be left off.
Choosing the Right 240v Generator
Sorting the right one is simple: add up what you need to start, not just what you need to run. Motors and compressors pull harder on start-up than the label makes out.
1. Running Load vs Start-Up Load
If you are only charging batteries and running lights, a small generator will usually do the job. If you are starting saws, mixers or other motor-driven kit, give yourself plenty of headroom or it will bog down, trip out or struggle every time the trigger is pulled.
2. Fixed Site Use vs Portable Use
If it is staying near a cabin or one work area, a larger site generator with a bigger tank makes sense. If you are lifting it in and out the van, moving through gardens or carrying it across plots, keep an eye on size, frame design and weight before you get carried away with output.
3. Socket Layout
Do not just look at wattage. Check the actual sockets fitted. If your gear is 240v, make sure the generator gives you the right 240v outlets and enough of them for lights, chargers and tool leads without a mess of adaptors.
4. Noise and Environment
If you are working in built-up areas, domestic properties or near occupied buildings, noise matters more than most lads think. For open site work a standard petrol generator is usually fine, but for home backup or quieter jobs it is worth looking at enclosed or lower-noise portable generators.
The Basics: Understanding 240v Generators
A generator is simply your temporary mains supply when the mains is not there or cannot be trusted. The important bit is understanding what it can start, what it can keep running, and how that affects the job.
1. 240v Output
This is the standard supply most site chargers, lights and plenty of corded equipment are built around. If your kit runs from a normal 240v plug, a 240v generator is the type you are looking at.
2. Rated Power vs Peak Demand
The rated output is what the generator can keep supplying. Peak demand is the extra hit needed when a motor first starts. That is why a generator that runs lights all day might still struggle with a saw or mixer if you have sized it too tightly.
3. Portable vs Site Set-Up
Mini generators and portable generators are handy when you are moving around and only need lighter loads. Larger site generators suit longer run times, more sockets and heavier day-to-day demands where the unit stays in one area.
Generator Accessories That Save Hassle on Site
A few sensible extras stop downtime, protect the unit and make day-to-day use far easier.
1. Heavy Duty Extension Leads
Get proper site leads rated for the load. It saves dragging the generator right into the work area and stops you overloading thin, cheap cables that get warm and drop performance.
2. Fuel Cans and Spouts
A decent fuel can saves the usual mess of trying to top up from whatever is rolling about in the van. Cleaner refuelling means less wasted petrol and less grime around the tank opening.
3. Generator Covers or Storage Bags
If the unit is living in the van, workshop or lock-up, a cover keeps dust, damp and general site muck off it. That matters when vents and sockets start filling with debris.
4. Oil and Service Kits
Skipping oil changes is the quickest way to shorten the life of a hard-worked generator. Keep the right oil and basic service bits nearby so it does not get ignored between jobs.
Choose the Right 240v Generators for the Job
Match the generator to the load and how often you need to move it.
| Your Job | 240v Generator Type | Key Features |
|---|---|---|
| Charging batteries and running a couple of site lights | Small generator or mini generator | Compact frame, straightforward 240v output, easy van loading, enough power for light steady demand |
| General snagging, maintenance and mobile call-out work | Portable generator | Carry-friendly design, sensible tank size, 240v sockets for chargers and light corded kit |
| Daily use with saws, drills, mixers and multiple users | Site generator | Higher output, stronger frame, longer runtime, enough headroom for start-up loads |
| Domestic outage cover for key appliances and essentials | Backup power generator | Stable 240v supply, practical socket layout, manageable noise level, easy starting |
| Outdoor work in gardens, plots and areas away from fixed power | Petrol generator | Independent power, quick refuelling, no mains needed, suited to remote and temporary work areas |
Common Buying and Usage Mistakes
- Buying purely on running watts and ignoring start-up demand. That works fine until a motor-driven tool kicks in and the generator stalls or trips, so always leave headroom for the initial surge.
- Choosing a unit that is too heavy for the way you actually work. A bigger generator is no use if it never leaves the van because it is awkward to move, so match size to access and transport.
- Ignoring the socket layout. Plenty of buyers focus on output and then realise the plugs do not suit the gear they need to run without extra adaptors and extension leads.
- Running the generator without basic servicing. Miss oil checks and filter maintenance and you will shorten its life fast, especially on dusty sites and long shifts.
- Using a small generator like a full site supply. They are handy for chargers, lights and light tools, but push them too hard all day and you will get poor performance and more wear than necessary.
Portable Generators vs Small Generators vs Site Generators
Portable Generators
Best when you need power in different spots through the day and cannot justify lugging a bigger unit about. Good for call-outs, garden work and mobile trades, but not the first pick for heavy constant loads.
Small Generators
Ideal for battery chargers, lighting and lighter duty 240v kit. They are easier to store and cheaper to run, but they have less headroom when tools with motors or higher start-up demands come into play.
Site Generators
Built for tougher day-to-day use where more than one bit of kit may be running and runtime matters. They take up more room and weigh more, but they are the safer choice for regular site backup power and heavier work.
Backup Power Generators
These suit keeping essentials live during a cut rather than feeding a full site worth of tools. If home backup is the main aim, focus on the appliances you actually need to cover and keep noise and socket layout in mind.
Maintenance and Care
Keep It Clean
Wipe off dust, mud and fuel residue after use, especially around vents, recoil starters and sockets. A generator dragged round site soon clogs up if it is left covered in muck.
Check Oil Regularly
Petrol generators need routine oil checks and changes if you want them to last. Ignore it and the engine will tell you soon enough, usually halfway through a job you cannot stop.
Store It Dry and Secure
Do not leave it sitting in damp corners of the yard or rolling loose in the back of the van. Dry storage helps protect electrics, sockets and the frame from avoidable rust and knocks.
Inspect Leads and Outlets
Check for damaged sockets, loose connections and worn leads before every job. A generator is only as reliable as the bits plugged into it, and dodgy cables cause no end of trouble.
Service Before It Becomes a Problem
If starting gets harder, output becomes inconsistent or it sounds rougher than usual, sort it early. Basic servicing is cheaper than waiting until the unit lets you down on a live job.
Why Shop for 240v Generators at ITS?
Whether you need a small generator for chargers and lights, a portable generator for mobile work, or a larger site generator for regular backup power, we stock the full range. It is all in our own warehouse and ready for next day delivery, so you can get power sorted without holding the job up.
240v Generators FAQs
What is a generator used for on site?
It is there to provide temporary power when the mains is not available or keeps dropping out. On site that usually means running lights, battery chargers, small tools, test gear and other 240v equipment so work does not stop.
How do I choose the right 240v generator for my tools and equipment?
Start with the heaviest thing you need to power, then allow extra capacity for start-up surge. If it is only lights and chargers, a smaller unit is fine. If you are running motor-driven tools, buy with headroom or you will be forever pushing the generator too hard.
What size generator do I need for site lighting, chargers and power tools?
For lighting and battery chargers, small generators are often enough. Once you add saws, mixers or heavier corded tools, size up quickly because those loads hit harder when starting. The safest route is to total the running load and then leave proper margin on top.
Is a petrol generator better than an electric generator for site use?
For site use, petrol generators make more sense because they are self-contained and work where there is no fixed supply. An electric generator still needs mains to begin with, so it is not solving the same problem when you need proper independent site power.
Will a small or mini generator run power tools and battery chargers?
Yes, for chargers, lights and lighter power tools, many will. Be honest about the load though. A mini generator is handy, but if you try to run bigger saws or anything with a hefty motor start-up, you will soon find its limit.
Can a 240v generator be used for home backup power?
Yes, a 240v generator can cover basic home backup jobs like fridges, freezers, lighting, routers and selected essentials. The key is to work out exactly what you need to keep live and not assume one unit will run the whole house without planning.
How noisy are portable generators and are quieter models available?
Noise varies a lot by size and design. Open-frame site generators are usually louder, while some portable generators are built to run quieter. If you are working near houses, in enclosed areas or want one for home backup, it is worth prioritising lower-noise models.
What sockets and outputs should I look for on a site generator?
Look first at the 240v sockets you actually need for your tools, chargers and leads. Then check how many outlets are fitted, whether they suit site use, and whether the generator can genuinely support the combined load without relying on adaptors everywhere.
