SupaTool Circuit Tester - 140mm - Purple

The SupaTool Circuit Tester features a sharp steel tip designed to help locate broken and live wir...

Best current price£7.03from B&Q

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B&Q - Supatool Circuit Tester Purple (140mm)
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OnBuy.com(140Mm, Purple) Supatool Circuit Tester 5059444511127
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Product Information

Full details

The SupaTool Circuit Tester is an essential tool for homeowners, DIY enthusiasts, and students who need a reliable way to verify circuit integrity and locate faults. Designed for safety and precision, its primary benefit is the ability to quickly confirm the presence of live current or identify broken wires without extensive disassembly; however, users should exercise caution as the sharp tip is intended to pierce insulation and can cause damage if handled incorrectly.

All features

BrandSupaTool

Extended Product Information

FAQs

Can I use this on high-voltage power lines?

No. This tool is designed for standard residential and office circuit voltages, not high-voltage industrial or utility lines.

Does it need batteries?

The standard SupaTool Circuit Tester operates based on the circuit's own current or voltage and typically does not require batteries.

Will the tip damage my wires?

The tip is designed to pierce insulation, which will leave a small hole. In most cases, this can be sealed with electrical tape after testing.

Is this tool waterproof?

It is not waterproof. Keep the device dry to prevent corrosion and maintain safety.

What does TUV/GS approval mean?

It means the product has been tested by an independent agency to meet specific safety and quality standards.

Troubleshooting

Tester does not indicate live circuit

Ensure the probe tip has made full contact with the metal conductor through the wire insulation.

Difficulty piercing thicker insulation

Apply steady, firm pressure perpendicular to the wire; do not rock the tool back and forth to avoid snapping the tip.

Unclear results during continuity check

Verify that the circuit is completely powered off and that you have a complete, unbroken path between the two points being tested.

Pros and Cons

Pros

  • Durable steel probe for long-term use
  • Compact and lightweight for easy transport
  • TUV/GS safety certification
  • Effective at piercing insulation for quick testing

Cons

  • Sharp tip requires careful handling to avoid injury
  • Not intended for high-voltage industrial machinery
  • Must pierce insulation, which leaves small marks on wires

Setup, Compatibility & Care

No complex setup is required; the tester functions as a passive device upon contact. It is compatible with standard household wiring. To maintain the tool, always keep the steel tip clean and free of debris. If the tip becomes dull after extensive use, carefully hone it to maintain its piercing efficiency. Store the device in a dry, cool environment, and ensure it is kept out of reach of children due to the sharp point. Never use the device if the handle or wire connection appears damaged or frayed.

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