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Generators

Portable generators for site work, backup power, and workshop use. The range covers petrol and diesel models from 1kW to 7kW output, with conventional and inverter designs. Pick capacity to match your load, consider inverter types if you're running sensitive electronics, and check whether you need 110V outlets for power tools alongside 230V.

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Start with your peak wattage requirement — add up everything that might run at once, then allow 20% headroom for motor starting surges. A 2kW inverter suits light trades and caravans; 3–4kW covers most site tools and welders under 180A; 5–7kW generators handle multiple heavy loads or serve as emergency backup for premises.

Inverter generators produce cleaner sine-wave power and run quieter at partial load, which matters if you're charging batteries or powering laptops, oscilloscopes, and other gear with switching power supplies. Conventional alternator types are simpler, often cheaper per watt, and fine for resistive loads — grinders, heaters, floodlights. Four-stroke engines burn less fuel per hour than two-strokes and tolerate longer run times; diesel units outlast petrol on durability but weigh more and cost more upfront.

Dual-voltage models (110/230V) let you plug UK and 110V site kit into the same machine without a transformer. Check the continuous rating, not just peak — that's what you can draw hour after hour. Sockets matter: look for RCD protection, especially on 230V outlets. Oil capacity and service intervals vary; smaller engines need oil changes every 50 hours, larger ones stretch to 100. If you're running a generator daily, keep a spare plug, air filter, and oil on hand.