Extech CT20 Cable Tester
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Rapid Online - Rapid Electronics Ltd.Extech CT20 Continuity Tester Pro
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Product Information
Full details
The Extech CT20 Cable Tester is designed for electricians and technicians who need to quickly identify and label two wires, even when their ends are in different locations. Its key benefit is enabling a single user to efficiently test continuity and map wires without assistance. A potential caveat is its specialized function, making it less suitable for general-purpose electrical testing. Key features include acoustic and optical indicators, a remote unit, and self-powering from the main unit.
All features
| Model Part Number | CT20 |
|---|---|
| Brand | Extech |
Extended Product Information
FAQs
Can the Extech CT20 test more than two wires at a time?
No, the CT20 is specifically designed to identify and test a pair of wires at a time.
Does the remote unit require its own battery?
No, the remote unit is powered directly by the main CT20 unit, simplifying operation.
What types of wires can the CT20 test?
It is suitable for standard electrical wiring and low-voltage circuits. It is not designed for high-voltage or data network cables.
How does the CT20 indicate a successful test?
It provides both acoustic (sound) and optical (two-colored LED on the remote unit) feedback to confirm continuity.
Can I use the CT20 to test for shorts?
The CT20 primarily tests for continuity, confirming a complete circuit. It does not directly test for shorts between wires.
Is this tester suitable for home DIY use?
Yes, for basic tasks like identifying which wire goes where in simple electrical projects, it can be very helpful.
Troubleshooting
No indication when testing wires.
Ensure both ends of the wire pair are securely connected to the CT20 and the remote unit. Verify that the wire itself is not broken. Test the CT20 with a known good connection.
Intermittent or false continuity readings.
Check for loose connections or frayed wires. Ensure there is no unintended bridging between wires. Clean the connection terminals on both the CT20 and the remote unit.
Remote unit not responding.
Confirm the remote unit is properly connected to the CT20. Ensure the CT20 unit is powered on and functioning. The remote unit is powered by the CT20, so a fully charged or operational CT20 is necessary.
Pros and Cons
Pros
- Enables single-user wire identification across different rooms.
- Provides both audible and visual confirmation of continuity.
- The remote unit is powered by the main tester, simplifying setup.
- Versatile for both wire tracing and standard continuity testing.
- Compact and portable design for easy field use.
Cons
- Primarily designed for identifying two specific wires, not complex network testing.
- Relies on clear line-of-sight or audible access for the remote unit's indicators.
- May require some basic understanding of electrical circuits for optimal use.
- No advanced diagnostic features beyond continuity.
Setup, Compatibility & Care
Setup:
- Connect one end of the wire pair you wish to test to the main CT20 unit.
- Connect the other end of the wire pair to the remote unit.
- Ensure both connections are secure.
- Activate the CT20 unit to initiate the test. The indicators will signal continuity.
Compatibility:
The CT20 is designed for testing standard electrical wiring and low-voltage circuits. It is compatible with most common wire types found in residential and commercial installations. It is not intended for use on high-voltage lines or data network cables requiring specialized testing.
Care:
- Keep the CT20 and its remote unit clean and dry.
- Use a soft, dry cloth for cleaning. Avoid abrasive cleaners or solvents.
- Store the units in a protective case or a dry environment when not in use.
- Periodically check the connection points for dirt or corrosion.