Mains Tester Plug – 230V UK Socket Wiring Checker with 3-Lamp Indicator

The Mains Tester Plug is a quick and reliable way to check that a UK 230V socket is wired correctly before use. With three bright indicator lamps and a tough polycarbonate/ABS construction, this plug-in tester gives instant confirmation of live, neutral and earth wiring conditions. Ideal for home users, tradespeople and anyone needing a fast safety check.

Key Features

• Instant confirmation of correct or incorrect socket wiring
• Three bright indicator lamps for easy fault identification
• Red polycarbonate top with white ABS base for durability
• No setup or calibration required — plug in and read
• Compact tester ideal for toolkits, garages and workshops

Specifications

• Rated Voltage: 200V–250V AC
• Rated Frequency: 50Hz
• Power Consumption: Approx. 1.45W at 220V
• Operating Temperature: -5°C to +40°C
• Relative Humidity: 0%–90%
• Maximum Altitude: 2,000m
• Compliance: BS EN 61010-1:1993
• Installation Category: Overvoltage Category II

How to Use

Plug the tester into a live socket. If all three lamps illuminate, the wiring is correct. If the pattern differs, compare the indicator pattern with the printed chart on the tester. Always consult a qualified electrician if a fault is shown. Unplug immediately after use.

Safety & Warnings

• Only for use on indoor, dry 230V UK mains sockets
• Do not use on damp or damaged sockets
• Do not disassemble or modify the tester
• Some rare wiring faults may not be detectable
• All wiring repairs must be carried out by a qualified electrician

Frequently Asked Questions

What wiring faults can the Mains Tester Plug detect?

It detects common faults such as missing earth, reversed live/neutral, and other incorrect wiring configurations shown through the lamp pattern.

How do I know if a socket is wired correctly using this tester?

A correctly wired socket will illuminate all three indicator lamps. Any other pattern indicates a wiring fault that should be checked professionally.

Can I use the Mains Tester Plug on any UK household socket?

Yes — it is suitable for standard 200V–250V 50Hz UK sockets rated within Overvoltage Category II. It must not be used on wet, outdoor or industrial sockets outside its rating.

Does the Mains Tester Plug require calibration before testing?

No — simply plug it into a known-good socket to verify all lamps operate, then use it to test other sockets.

Related Products

If you need to test wiring at a 16A CEE blue outlet, pair this tester with our 16A CEE to UK 13A adapter. This allows you to plug the Mains Tester Plug directly into a 16A hook-up point for a fast and reliable wiring check before connecting equipment.