Can I use this cable for 16A continuously over 30 metres?

Not recommended. At 30m, voltage drop reaches 3% or more. We suggest limiting continuous use to 10A or upgrading to a 4mm² cable.

What if I need to run full 16A over a long distance?

Use our 4mm² Ultra Heavy Duty extension leads, which are rated for full 16A load over up to 50m.

Is this cable outdoor rated?

Yes. The 2.5mm² Arctic-grade cable and IP44 CEE connectors are fully weatherproof for outdoor use.

How can I measure voltage drop?

Use a plug-in voltage tester at the appliance and compare to the supply. A drop of more than 10V may affect sensitive equipment.

Heavy Duty IP44 16 Amp CEE Extension Lead with 2.5mm2 Cable

Price range: £34.99 through £114.99

Buy with Confidence

The Heavy Duty IP44 16 Amp CEE Extension Lead features a robust 2.5mm² cable, ideal for outdoor use in wet conditions. Available in lengths from 5 to 50 metres, it provides reliable power for caravans, motorhomes, and other heavy-duty applications. Perfect for extending your power supply safely and efficiently. Full Details

Option

Clear

SKU: 16A-Extension-2.5mm2 Categories: 16 Amp 230 Volt, 16 Amp Plug to Coupler, 16A Extension Leads, All Products, Caravan, Motorhome Power, Caravan, Motorhome, RV Brand: HDIUK

Description

HDIUK 16A Arctic-Grade 2.5mm² CEE Extension Lead – Made in the UK

Heavy-duty performance in a compact cable. Tested, certified, and trusted by professionals.

UK-Made, Certified, and Ready-to-Use

Built for real-world use in construction, outdoor, and workshop environments. This HDIUK 16A CEE extension lead is assembled in Hampshire using 2.5 mm² arctic-grade cable and fully tested to meet professional safety standards.

Introducing the HDIUK 16 Amp CEE Plug to Coupler Extension Lead

This high-quality extension lead provides a reliable and safe power connection for workshops, events, and off-grid applications. Crafted in the UK with precision and care, each lead is tested and labelled with a unique serial ID for traceability.

Key Features:

UK-Manufactured: Assembled and tested in Eastleigh, Hampshire
Certified: Earth continuity, insulation resistance, and polarity tested
Unique Serial ID: Labelled for traceability and safety recordkeeping
16A CEE Plug & Socket: IP44 rated for secure outdoor use
2.5mm² Arctic Cable: Flexible, weatherproof, and cold‑temperature rated
Ready to Use: Delivered pre-assembled and fully tested

Usage & Voltage Drop Guidance (Real-World Tested)

Short runs (under 20m) can safely carry 16A. For longer runs, voltage drop becomes significant. Below is a guidance table showing safe operating loads based on length:

Length	Recommended Constant Load	Peak Load (10–15 mins)	Voltage Drop Estimate	Status
10m	16A	20A	~2.3V (1.0%)	✅ Excellent
20m	16A	18A	~4.6V (2.0%)	✅ Acceptable
30m	10A	16A	~6.9V (3.0%)	⚠️ Load Reduced
40m	8A	12A	~9.2V (4.0%)	⚠️ Load Reduced
50m	6–7A	10–12A	~11.5V (5.0%)	⚠️ Max Drop Limit

Figures based on 230V nominal supply and BS 7671 5% voltage drop threshold (11.5V). For heavier loads over 30m, use our 4mm² Ultra Heavy Duty version.

Perfect for:

Construction and renovation sites
Outdoor events and festival setups
Home garages and power tools
Camping, caravanning, RVs, and motorhomes
Portable generator connections

Trust HDIUK for high-quality, safe, and professionally tested power solutions.

Order your 2.5mm² 16A Extension Lead today – built in the UK, tested for safety, and backed by experience.

Additional information

Option	Length: 5 Metres, Length: 10 Metres, Length: 15 Metres, Length: 20 Metres, Length: 25 Metres, Length: 30 Metres, Length: 35 Metres, Length: 40 Metres, Length: 50 Metres

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