3kVA Site Transformer Hire London | 240V to 110V Heater Transformer (16A)

Yes. Hireload offers 3kVA site transformer hire in London with delivery across all London boroughs by booking. You can also collect from our Greenford UB6 depot by appointment. Call 020 3375 4048 or email info@hireload.co.uk to confirm availability and arrange your delivery slot.

A 3kVA site transformer converts standard 240V mains power to 110V — the standard safe working voltage used for construction site tools and equipment in the UK. You plug the transformer into a normal mains socket, and connect your 110V heater, light, drill, grinder, saw or dryer to the 110V output outlets.

Yes. This is a 240V to 110V transformer. The input plugs into a standard 240V mains socket using a normal 13A plug. The output provides 110V for your site equipment. No rewiring or specialist connection required — it’s a plug-and-use hire item.

kVA stands for kilovolt-ampere — a measure of apparent electrical power. 3kVA is the maximum load this transformer is rated to handle. For most practical purposes, think of it as the total power capacity: if the equipment you connect draws more than 3kVA in total, you risk overloading the transformer. Add up the nameplate wattage (in watts or kW) of everything you plan to connect, and confirm the total is within 3kVA before use.

Not exactly — kVA (apparent power) and kW (real power) differ depending on the power factor of the equipment. For most resistive loads like heaters and incandescent lighting, they are roughly equivalent. For motors and electronic equipment the relationship depends on their power factor. As a practical guide, treat 3kVA as approximately 3000W and confirm your total connected load stays comfortably below that figure.

CTE stands for Centre Tapped to Earth. CTE transformers are commonly used for reduced-voltage 110V site power in UK construction settings. Confirm the exact configuration of the unit supplied at the time of booking.

No. This is an intermittent / standard-rated transformer, designed for site tool use where loads cycle on and off during the working day. It is not intended for equipment running non-stop. If you need a transformer for a heater, lighting rig or any equipment that will run continuously without switching off, ask about our 3kVA continuous-rated transformer.

The duty rating. This standard / intermittent-rated transformer is designed for loads that cycle on and off — a drill in use, then idle, then in use again. A continuous-rated transformer is built to handle a sustained, non-stop load without overheating. If you’re running a fan heater or lighting rig overnight or for extended uninterrupted periods, the continuous-rated version is the correct choice.

Most single 110V site tools — SDS drills, angle grinders, circular saws, jigsaws, mitre saws, site lights, and air movers — run comfortably within 3kVA. Check the nameplate wattage on each tool before connecting. If you’re running multiple tools at the same time, add up their combined wattage and confirm the total stays within the 3kVA rating.

Yes — this is one of the most common uses. Confirm the heater’s nameplate wattage is within the 3kVA rating. Also confirm whether you need daytime intermittent use (this transformer) or overnight / continuous operation (in which case the continuous-rated version is the appropriate choice). Check the 110V fan heater hire page for available units.

Yes. LED 110V site lights typically draw well under 1kW, leaving ample capacity within the 3kVA rating. If you’re running a lighting rig continuously overnight, the continuous-rated transformer is the more appropriate choice. For site lighting hire, see our site lighting range — several units run on 110V and can be paired with this transformer.

Yes, as long as the combined wattage of all connected equipment stays within the 3kVA rating. For example, a site light at 0.15kW and a drill at 0.8kW together are well within 3kVA. But two tools each drawing close to 2kW would exceed the rating. Always add up nameplate figures before connecting multiple items. For larger combined loads, the 5kVA transformer provides more headroom.

Overloading can cause the transformer to overheat. Most units have thermal protection that trips the unit off to prevent damage — but this interrupts your work and repeated overloading can shorten the unit’s life and cause damage. Always confirm your combined load is within 3kVA before connecting equipment. If you’re regularly near capacity, hire the 5kVA version to give yourself headroom.

The 240V input of this transformer uses a standard 13A plug — the normal UK household plug. On the 110V output side, the sockets are 110V 16A (confirm exact configuration at booking). Most common 110V site tools use 16A plugs. If your equipment has a 32A plug, confirm compatibility with us at the time of booking.

110V site plugs in the UK are typically yellow with a round configuration and an earth pin. They are different from standard 240V domestic plugs. If your equipment has a yellow 110V plug, it is likely compatible. Do not use adaptors to connect 240V domestic plugs to 110V sockets — the voltages are different and this is unsafe. If in doubt, contact us before booking.

The transformer can be positioned outdoors on site, but it must be kept sheltered and dry. Position it under a cover, awning, site shelter or similar — do not leave it exposed to rain or in areas with standing water. Always ensure the mains input cable and output cables are in good condition and not laying in puddles or wet ground.

No. This transformer is not waterproof. It must be kept sheltered and dry during use. Do not use in rain, and do not allow water ingress into the unit or its connectors. If your site is exposed or working in wet weather, arrange adequate shelter for the transformer before use.

No — not in direct rain. If your work continues in wet weather, the transformer must be positioned under cover where it will remain dry throughout. Do not operate the transformer if it has been exposed to rain or shows signs of moisture ingress. Contact us if you have questions about site setup in wet conditions.

In principle, a transformer can be used with a generator if the generator produces a clean 240V AC output — but confirm this with the generator supplier before connecting. Not all generators produce voltage output suitable for use with a transformer. If your site has no mains supply, discuss your full power requirement with both the generator and transformer supplier before booking.

A transformer converts voltage — it takes an existing 240V mains supply and steps it down to 110V. It does not generate power. A generator creates electrical power from a fuel source (petrol or diesel) for sites with no mains connection. If your site has a 240V mains socket, hire a transformer. If your site has no mains power at all, you need a generator first — and potentially a transformer in addition if your equipment is 110V.

It depends on your site layout. If your equipment is far from the transformer, you can run a 110V extension lead from the transformer’s output. Always use a 110V-rated site extension lead — do not use standard domestic extension leads on the 110V output side. On the input side, plug the transformer directly into the 240V mains socket without an extension.

No. The output of this transformer is 110V, and you should use a 110V-rated site extension lead from the output sockets to your equipment. Standard domestic extension leads are rated for 240V and use 240V plugs — connecting them to a 110V output is incorrect and potentially unsafe. Hire or source a proper 110V extension lead if you need additional cable reach.

Before first use: confirm all connected equipment is rated for 110V; add up nameplate wattages and confirm the total is within 3kVA; check all plugs and leads are undamaged; confirm the unit is positioned in a dry, sheltered, ventilated location; verify the input cable is plugged directly into the mains (no 240V extension); and confirm the 110V extension leads (if any) are 110V-rated. Call us on 020 3375 4048 if you are unsure about any step.

Yes. Collection from Greenford UB6 is available by appointment. This is often the most straightforward and economical option for short hires, particularly if you have a van or suitable vehicle. Contact us to arrange a collection slot before arriving at the depot.

Yes — 110V transformer hire delivery is available across all London boroughs by booking. Delivery is kerbside as standard. Contact us to confirm your postcode, schedule a delivery slot, and arrange return collection. Call 020 3375 4048 or email info@hireload.co.uk.

Hire pricing is shown above on this product page. Rates vary by duration — daily, weekly and longer-term rates differ. Delivery cost depends on your location. Call 020 3375 4048 or email info@hireload.co.uk for a quote including delivery to your London site.

Use the booking options on this page, or contact us directly. To confirm delivery availability, collect from Greenford UB6, or discuss your specific load requirements, call 020 3375 4048 or email info@hireload.co.uk with your hire dates, delivery postcode and equipment list.

The most common pairings are the 110V fan heater (check wattage against the transformer rating) and 110V site lights. For drying jobs, some air movers run on 110V — check the equipment voltage. If you’re combining a heater and tools on the same transformer, confirm the combined wattage stays within 3kVA.

Call us before booking. Tell us the equipment name, its voltage rating (shown on the nameplate label), wattage or amperage, and the plug type. We’ll confirm whether it’s compatible with the transformer, whether you need the standard or continuous-rated version, and whether the 3kVA or 5kVA size is the right choice. We’d rather sort this before delivery than after. Call 020 3375 4048.

Hire periods range from a single day to multi-week and longer-term site hire. Daily, weekend, weekly and extended rates are available — see pricing above this description area. For project-length hire where a site needs a transformer for several weeks, contact us to discuss the most cost-effective arrangement.