Portable Generator: Expert Tips for Optimal Use in the UK

Jun 08, 2025

Forgot the matches but brought a generator? Smart move—just don’t gas yourself or flood the tent. Short answer: place it safely, keep it dry, use the right fuel, and check it often. From camping chaos to blackout brilliance, here’s how to make your camping generator your best mate outdoors.

Critical Safety First: Preventing Common Portable Generator Hazards

Portable generators are incredibly useful—but misuse can be dangerous. Before you fire one up, it’s essential to follow core safety principles. This will protect you, your equipment, and others nearby.

AFERIY portable generator with LED display and multiple output ports, on a white background.

Avoiding Carbon Monoxide (CO) Poisoning: The Golden Rules

Outdoor Placement ONLY: Defining "Safe Distances" (Windows, Doors, Vents)

Always place your generator outside. It should be at least three feet away from windows, doors, or vents to avoid fumes getting indoors.

Good airflow is key. Don’t cut corners on placement, even if it’s raining—use a cover designed for open-air use if needed.

Why Garages, Basements, and Enclosed Spaces are Never Safe

Even if doors or windows are open, using a generator in a garage or basement is never safe.

These areas can trap carbon monoxide, which builds up quickly and silently. Always opt for outdoor spaces with full ventilation.

AFERIY portable generator powering an electric lawnmower outdoors with a man in workwear, in a garden setting.

The Importance of Carbon Monoxide Detectors

Install a carbon monoxide detector in your home or tented area when using a generator nearby.

These devices can be lifesaving. They alert you before fumes become dangerous—especially useful during overnight use or poor weather.

Electrical Safety: Preventing Shocks, Electrocution, and Backfeeding

Proper Use of Heavy-Duty Extension Cords (Rating, Inspection)

Use only heavy-duty, outdoor-rated extension cords.

Inspect them before every use. Look out for frays, cracks, or bent plugs—any of these could pose a shock or fire risk.

Understanding Backfeeding and Why You MUST Use a Transfer Switch for House Power

Never plug a generator directly into a wall socket.

Doing so can cause backfeeding, which endangers utility workers and may damage your home’s electrical system. A transfer switch, fitted by a professional, is the only safe option.

Operating in Wet Conditions: Keeping Your Generator Dry

British weather isn’t always kind. Keep your generator dry by placing it under a canopy or cover designed for outdoor generator use.

Never use it indoors, even to avoid rain. Wet conditions and live electricity are a dangerous mix.

Grounding Your Generator (Consulting the Manual)

Always check your owner’s manual for grounding requirements.

Some models need to be grounded before use to avoid electric shock. If in doubt, consult an electrician or the manufacturer.

Fire Prevention: Fuel Handling and Placement

Safe Refuelling Practices (Cool Down, No Spills)

Turn the generator off and let it cool before adding fuel.

Spilled petrol on a hot surface is a recipe for fire. Use a funnel if needed, and refuel slowly to avoid splashes.

Storing Fuel Correctly (Approved Containers, Away from Heat)

Store fuel in proper containers—clearly labelled and approved for petrol or diesel.

Keep these containers in a cool, shaded area away from any heat sources, including direct sunlight or heaters.

Keeping Generators Clear of Combustible Materials

Keep the generator on a flat, solid surface and away from leaves, paper, or flammable debris.

This lowers the risk of fire and helps maintain airflow to the engine.

AFERIY portable generator with side ventilation and open input panel, on a white background.

Smart Operation and Maintenance for Reliable Power

Good habits mean your generator will be ready whenever you need it. Whether it’s for camping, DIY, or emergency use, staying prepared pays off.

Best Practices for Operating Your Portable Generator

Always Read Your Owner's Manual First

It sounds obvious, but many people skip it.

Your manual contains specific guidance for your model. Read it at least once before use.

Proper Starting and Stopping Procedures

Follow the recommended steps when starting or shutting down.

This prevents wear on internal components and helps avoid unnecessary faults.

Managing the Load: Avoid Overloading and Prioritise Appliances

Don’t try to power everything at once. Prioritise what you really need—fridges, lights, or chargers.

Knowing your generator’s wattage limit avoids overheating or tripping.

Running the Generator Periodically ("Exercising")

Run your generator every month or two for 15–20 minutes.

This keeps the engine lubricated and prevents fuel from clogging up the carburettor.

Essential Maintenance and Storage Tips

Key Maintenance Checks: Oil, Filters, and Spark Plugs

Before use, check the oil level and make sure the air filter is clean.

Inspect the spark plug for dirt or corrosion. These checks take five minutes and can prevent major issues later.

Fuel Care for Longevity: Using Fresh Fuel and Stabilisers

Stale fuel can clog engines. Always use fresh petrol or diesel.

Add a fuel stabiliser if you won’t be using the generator for a few weeks—it helps preserve fuel quality.

Preparing Your Generator for Short-Term and Long-Term Storage

If storing for a short time, cover the generator and keep it dry.

For longer periods, drain old fuel, disconnect the battery (if present), and store it in a cool, well-ventilated place.

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