These Testo 0590 0014 measuring cable extensions give electrical techs and apprentices extra reach and flexibility when testing circuits on HVAC gear.

They're handy for awkward spots like motor terminals or control boards, letting you connect your multimeter or clamp meter without wrestling with short leads. Anyone who's tried to get a solid reading in a tight plant room knows the struggle of short cables.

Best For

• Electrical Techs and Apprentices
• HVAC Service and Maintenance Teams
• Competent DIY Owners Working on Electrical Systems

Compatibility

These extensions are designed for instruments with standard banana jacks. They're a solid match for Testo clamp meters (like the 770-2 series) and Testo multimeters (760-1, 760-2, 760-3 series), as well as multimeters from other manufacturers that use banana plug connections.

If you're running a different model, check fittings and specs before ordering.

Features

• Angled Plug Design: For easier access in tight panels and awkward testing spots.
• Extended Reach: Generous 1075 mm (approx. 42 inches) cable length.
• Robust Safety Ratings: Rated for CAT IV 600V / CAT III 1000V overvoltage categories, suitable for various electrical environments.
• 10 A Max Current: Handles typical diagnostic currents without issue.
• Universal Connection: Compatible with instruments featuring standard banana jacks.

Technical Specifications

What's in the Box

• 1 set of Testo measuring cable extensions with angled plugs (1075 mm length)

Using It on the Job

1. Always ensure power is isolated and locked out before connecting to any live circuits.
2. Plug the angled end of the extension cable into your multimeter or clamp meter's banana jacks, matching colours (red to red, black to black).
3. Connect the other end of the extension cable to your test leads, crocodile clips, or directly into a test socket.
4. Perform your measurements, ensuring good contact and steady readings.
5. After use, disconnect the cables, wipe them clean of any dust or grime, and coil them neatly for storage.

Limitations & Safety Notes

• Always verify the overvoltage category rating of your test leads and instrument against the circuit you are testing.
• Do not exceed the maximum current rating of 10 A for these cables.
• Inspect cables for any damage (frays, cracks) before each use; replace if compromised.
• Follow Australian electrical safety standards and Safe Work guidance when performing electrical measurements.

Tradie Pro Tip: Keep these extensions handy. There's nothing worse than trying to contort yourself or your meter into a tight panel. These cables give you that extra bit of freedom, making the job safer and a whole lot less frustrating.

Pair With

Pair with Testo digital multimeters or Testo clamp meters. A good set of safety crocodile clips also rounds out your electrical test kit.