Price range: £219.99 through £279.99
The Ultra Heavy Duty IP44 16 Amp CEE Extension Lead features a robust 4mm² cable, designed for outdoor use in wet conditions. Available in lengths of 30, 40, 50, and 60 metres, it is ideal for powering caravans and motorhomes. This extension lead ensures reliable performance and safety for all your electrical needs on the go. Full Details
Ultra Heavy Duty IP44 16 Amp CEE Extension Lead with 4mm2 Cable is engineered for demanding environments where reliability and safety are paramount. Ideal for long-distance applications, this extension lead supports power-critical tasks with a robust design tailored for professionals.
This extension lead is perfect for industrial, construction, and event applications. It is designed to provide stable power distribution in challenging conditions, making it suitable for tool-hire companies, mobile generator setups, and outdoor events.
| Length | Recommended Load | Peak Current | Max kW @ 230 V | Voltage Drop | Status |
|---|---|---|---|---|---|
| 10 m | 16 A | 43 A | 9.9 kW | < 1.5 V (~0.6 %) | ✅ Excellent |
| 20 m | 16 A | 38 A | 8.7 kW | < 3 V (~1.3 %) | ✅ Excellent |
| 30 m | 16 A | 32 A | 7.4 kW | ~ 4.5 V (~2 %) | ✅ Approved (Field-Tested) |
| 40 m | 14–15 A | 27 A | 6.2 kW | ~ 6 V (~2.6 %) | ✅ Safe |
| 50 m | 13–14 A | 22 A | 5.1 kW | ~ 7.5 V (~3.3 %) | ✅ Safe |
| 60 m | 12 A | 18 A | 4.1 kW | ~ 9 V (~3.9 %) | ✅ Safe* |
| 75 m | 10 A | 14 A | 3.2 kW | ~ 11.5 V (~5 %) | ⚠️ Max Drop Limit |
*Close to UK limit — use supervised loads or consider 6 mm² for continuous 18 A.
This extension lead is designed for safe use in outdoor and industrial environments. Ensure that the load does not exceed the specified ratings to maintain safety and performance. Always inspect the lead for damage before use.
The maximum length for safe continuous use is 50 m at a full 16 A rating.
Yes, it features weatherproof IP44 connectors, making it suitable for outdoor use.
The lead has been tested to show only a 2% voltage drop under a 1.5 kW load at 30 m.
Yes, each extension lead is individually tested and certified for earth, insulation, and polarity.
Our heavy duty 16 Amp extension lead is ideal for powering catering trailers, motorhomes, caravans or other electrical appliances that need to be sited futher away from a power source.
| Phase | Single-phase |
|---|---|
| Length | 30 Metres, 40 Metres, 50 Metres, 60 Metres |
| End A Connector | CEE 16A Plug (Blue) |
| End B Connector | CEE 16A Socket (Blue) |
| IP Rating | IP44 |


✔ UK Made & Tested
✔ Fast Dispatch from UK Stock
✔ 30-Day No Quibble Returns
If our system creates an unfair outcome, we override it and make it right.
Over 16 years selling online — trusted by 100,000+ Amazon customers.
Order now for next working day delivery.
Not sure this is the right cable? We’ll help you get the correct one — free, no-hassle returns if it’s not right.