Best Extension Lead for Caravans
Finding the best extension lead for caravans means balancing cable length, weatherproofing, and safety features to keep your campsite powered without tripping breakers. We've compared the top-rated models based on published specs, owner reviews, and build quality.
Quick answer
The best extension lead for caravans is the Bosch Professional 25m Cable Reel for its rugged build and thermal cut-out, while the Sealey 20m Heavy-Duty Extension Lead offers the best value for budget-conscious caravanners needing reliable outdoor power.
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Research updated June 2026.
Bosch Professional 25m Cable Reel
Thermal overload protection and heavy-duty cable for campsite reliability.
| Product | Best For | Key Spec | Rating | Price |
|---|---|---|---|---|
| Bosch Professional 25m Cable Reel | Overall durability | 25m, 3120W, IP44 | 4.5 / 5 | Check price |
| Sealey 20m Heavy-Duty Extension Lead | Budget value | 20m, 3120W, IP44 | 4.3 / 5 | Check price |
| Draper 30m Extension Cable Reel | Long reach | 30m, 3120W, IP44 | 4.2 / 5 | Check price |
| Stanley 15m Outdoor Extension Lead | Compact portability | 15m, 3120W, IP44 | 4.1 / 5 | Check price |
| Makita 20m Cable Reel | Worksite crossover | 20m, 3120W, IP44 | 4.4 / 5 | Check price |
Bosch Professional 25m Cable Reel
Best OverallPros
- Thermal cut-out prevents overheating
- Durable cable with good flexibility
- Integrated carry handle
Cons
- Heavier than budget options
- Premium price point
The Bosch Professional 25m Cable Reel is built for demanding environments, making it ideal for caravan use where reliability matters. Owner reviews consistently highlight the thermal overload protection as a key safety feature, preventing the reel from overheating when running multiple appliances. The IP44 rating means it handles splashes and dust, which is essential for outdoor campsite setups.
While it costs more than basic leads, the build quality justifies the investment for regular caravanners. The 25m length provides ample reach from most campsite hookups, and the four sockets let you power lights, a fridge, and charging devices simultaneously. Some users note the reel is bulky, but the handle makes transport manageable.
Sealey 20m Heavy-Duty Extension Lead
Best BudgetPros
- Affordable price point
- Good cable flexibility
- Compact reel design
Cons
- No thermal cut-out
- Reel feels less robust
The Sealey 20m Heavy-Duty Extension Lead is a popular choice for caravanners on a budget. Owner reviews praise its value for money, noting it handles typical campsite loads like a kettle and heater without issues. The IP44 rating ensures it is safe for outdoor use, and the 20m length suits most standard pitch distances.
It lacks the thermal overload protection found on premium models, so it is best for lighter use. The reel is lighter than the Bosch, making it easier to store in a caravan locker. Some users report the cable can kink if wound too tightly, but overall it is a solid entry-level option.
Draper 30m Extension Cable Reel
Best Long ReachPros
- Extra long 30m cable
- Thermal cut-out included
- Sturdy reel frame
Cons
- Heavy and bulky
- More expensive than shorter leads
The Draper 30m Extension Cable Reel is the go-to for caravanners who often pitch far from hookups. Owner reviews highlight the thermal cut-out as a welcome safety addition, especially when running the full 30m under load. The IP44 rating and four sockets make it suitable for outdoor use with multiple devices.
At 30m, the cable is heavy and the reel is one of the largest on this list, so storage space is a consideration. The build quality is solid, with a metal frame that withstands rough handling. It is overkill for short distances, but essential for larger campsites or when you need flexibility in positioning your caravan.
Stanley 15m Outdoor Extension Lead
Best CompactPros
- Very compact and lightweight
- Easy to store in small lockers
- Good for close pitches
Cons
- Only 3 sockets
- Limited length for larger sites
The Stanley 15m Outdoor Extension Lead is designed for caravanners who prioritize portability. Owner reviews note it fits easily into small storage compartments, making it ideal for quick weekend trips. The IP44 rating ensures it is safe for damp grass, and the cable is flexible enough to lay flat without kinking.
With only three sockets and a shorter length, it is best for caravans that park close to the hookup. Some users wish for a fourth socket, but for basic needs like a kettle and phone charger, it works well. The build quality is decent for the price, though not as heavy-duty as the Bosch or Draper options.
Makita 20m Cable Reel
Best Worksite CrossoverPros
- Excellent build quality
- Thermal overload protection
- Works for both caravan and DIY use
Cons
- Higher price than similar lengths
- Reel can be stiff initially
The Makita 20m Cable Reel brings worksite-grade durability to the caravan park. Owner reviews praise its robust construction, with a reinforced reel that withstands drops and rough terrain. The thermal overload protection is a standout safety feature, and the IP44 rating means it handles rain and mud without issues.
It is slightly more expensive than the Sealey, but the build quality justifies the cost for those who also use it for DIY projects at home. The 20m length is a good middle ground, and the four sockets offer flexibility. Some users find the reel stiff when new, but it loosens with use.
What to check before buying an extension lead for your caravan
Choosing the right extension lead for caravans involves more than just picking the longest cable. The most important factor is the cable's current rating. Most caravan hookups supply 16 amps, so your extension lead must be rated for at least 3120 watts (230V x 16A). Using an underrated cable can cause overheating and tripped breakers.
IP rating is another critical consideration. An IP44 rating means the lead is protected against splashes and solid objects larger than 1mm, which is the minimum for outdoor campsite use. For wetter conditions, look for IP65 or higher. Cable length also matters: 15m to 25m covers most standard pitches, but larger sites may require 30m. Always check the reel's thermal protection, as this automatically cuts power if the cable overheats.
Mistakes to avoid when using a caravan extension lead
A common mistake is using a domestic extension lead instead of one rated for outdoor use. Domestic leads often lack the IP rating and cable thickness needed for caravan power. Another error is fully unwinding a cable reel when running high-wattage appliances. If the cable is coiled, it can generate heat and potentially melt the insulation, so always fully extend the cable before use.
Overloading the lead is another frequent issue. While a 16A lead can handle up to 3120W, running a kettle (2000W), heater (1500W), and fridge (500W) simultaneously exceeds that limit. Use a power monitor to track your total draw. Finally, avoid running the cable through puddles or sharp edges, as this can damage the insulation and create a shock hazard.
FAQs
Can I use a standard household extension lead for my caravan?
No, standard household leads lack the IP44 weatherproof rating and proper cable thickness for outdoor caravan use, posing a safety risk.
What length extension lead do I need for a caravan?
Most campsite pitches require 15m to 25m, but larger sites may need 30m to reach the hookup point from your caravan.
Is a cable reel with thermal cut-out necessary?
Yes, thermal cut-out prevents the cable from overheating if you draw too much power, adding an important safety layer for caravan use.
Can I leave my extension lead plugged in when it rains?
Yes, if the lead has an IP44 rating or higher, it is designed to withstand rain and splashes, but keep connections off the ground.
What is the maximum wattage for a caravan extension lead?
Most caravan extension leads are rated for 3120W (16A at 230V), matching the standard campsite hookup supply.
How many sockets do I need on a caravan extension lead?
Four sockets are ideal for powering a kettle, fridge, heater, and charging devices simultaneously without overloading the lead.
Can I use a 10m extension lead for my caravan?
Yes, 10m works for close pitches, but it may be too short for larger campsites where the hookup is further from your caravan.
Are all caravan extension leads the same plug type?
Most use a standard UK 3-pin plug, but some campsites require a specific connector, so check your caravan's hookup compatibility.
How do I store a caravan extension lead?
Store it on a reel to prevent kinks and damage, and keep it in a dry locker to avoid moisture buildup that can degrade the cable.
Can I use an extension lead with a solar panel setup?
Yes, but ensure the lead is rated for outdoor use and the total wattage from your solar inverter does not exceed the cable's 3120W limit.
Our verdict
For most caravanners, the Bosch Professional 25m Cable Reel is the best all-rounder, offering thermal protection and durable build quality. If you are on a budget, the Sealey 20m Heavy-Duty Extension Lead provides reliable performance at a lower cost, making it the best budget pick for occasional trips.