Understanding UK Smart Plug Amp Ratings: Which One Do You Need

Here’s a breakdown of the different amp ratings for UK smart plugs, why you might choose one over another, and why you might still want a lower amp smart plug over a higher one.

Common Amp Ratings for UK Smart Plugs

In the UK, smart plugs typically come in three main amp ratings:

10 Amp

• Maximum Power: Approximately 2,300 watts (230V × 10A)
• Use for: Low to medium power devices such as lamps, TVs, routers, chargers, and fans
• Why choose it: Usually cheaper, smaller, and suitable for everyday gadgets

13 Amp

• Maximum Power: Approximately 2,990 watts (230V × 13A)
• Use for: Higher-powered devices such as heaters, irons, washing machines, and air fryers
• Why choose it: More flexible; the UK’s standard socket rating, suitable for almost anything in a typical UK home

16 Amp or Higher

• Maximum Power: Approximately 3,680 watts (230V × 16A)
• Use for: Power-hungry appliances such as electric vehicle chargers
• Why choose it: Necessary when exceeding the 13A household plug limit
• Note: These sometimes require special connectors or wiring and may not be suitable for standard home sockets

Why Not Just Always Use the Highest Amp Plug?

You might think, “If a higher amp rating means more power, why not always choose a 16A smart plug?” Here’s why a lower amp plug can still be the better choice:

1. Size and Practicality

Higher-amp smart plugs are often larger and bulkier, potentially blocking adjacent sockets or not fitting in tight spaces.

2. Cost

10A plugs are typically cheaper than 13A or 16A versions. If you’re just powering a lamp or charger, there’s no need to pay extra.

3. Safety

While a 16A plug isn’t dangerous for low-power devices, it won’t provide as precise protection. Lower-amp plugs may cut off faster in the event of a fault.

4. Wiring and Circuit Compatibility

Most UK sockets are wired for a maximum of 13A. A 16A-rated smart plug may require special sockets or circuit configurations to actually support that capacity.

Recommended Amp Rating by Use Case

Conclusion

If you’re using typical home devices, a 13A smart plug is your best all-round option. Choose a 10A version for low-power electronics to save space and money. Only consider higher than 13A if you specifically need it and your home’s wiring can support it.