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T6-1000 Electrical Tester

T6-1000 Electrical Tester - Measure voltage without test leads
T6-1000 Electrical Tester - Measure voltage without test leads
T6-1000 Electrical Tester gives you access in hard to reach areas
T6-1000 Electrical Tester works with most wire up to AWG 4/0
T6-1000 Electrical Tester improves safety by measuring voltage without making electrical contact

Measure voltage … without test leads

We know working in electrical boxes jammed with wires can be challenging when you’re trying to find a safe metallic contact point. Now, with Fluke’s T6-600 or T6-1000 with integrated FieldSense technology, you can quickly and easily take measurements by sliding the open fork over a conductor to see the voltage level without the need for test leads.*

See how easy it is to make FieldSense measurements

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FieldSense tools

Learn how to use the T6

Download the Quick Reference Guide
Download the T6 "How-To" Demonstration Guide

FieldSense tools

T6 Electrical Tester Helps Team at Cutting Edge Cancer Research Center

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T6 Awards

2017 NECA Showstopper H18 Innovation Awards Winner

Why use the T6 Electrical Tester?

Electricians often work in boxes jammed with wires, where finding a safe metallic contact point can be a challenge. With the T6-600 or T6-1000 you take measurements by sliding a single wire into the open fork.

How FieldSense Works

FieldSense technology is truly a breakthrough in how voltage is measured. While other open fork testers detect a magnetic field to show ac current, FieldSense technology detects an electrical field. This field interacts with a reference signal created by the T6 tester, creating a voltage value on the tester’s display.

Who needs a T6 tester?

Commercial and light industrial electricians can use T6 Electrical Testers for most everyday measurements. These devices easily fit in your pocket, making them easy to access on the front-line for electricians of all industries.

* Voltage measurement requires capacitive path to ground, provided through user in most applications. Ground connection via test lead may be required in some situations.
FieldSense capable Measures Volts & Amps No Contact Needed True RMS readingCE Certified CSA Certified CTick Certified

5 reasons the T6 belongs in your toolbelt

  1. Be safer: Measure voltage to 1000 V ac through the open fork, without test leads.
  2. Be faster: No need to open covers or remove wire nuts.
  3. Be more efficient: Simultaneously measure voltage and current.
  4. Be everywhere: 17.8 mm open fork is widest in the industry; measure up to 200 A on 4/0 wires (120 mm2).
  5. Go beyond simple detection. Actually measure ac voltage and current values without test leads.


Product Highlights

  • FieldSense technology for ac voltage, current and frequency measurement without making electrical contact to live voltage*
  • Simultaneous voltage and current display – shows all power supply measurements at a glance for efficient trouble shooting
  • 1 to 1000 V ac or dc (T6-1000)
  • 0 to 200 A ac
  • True-rms voltage and current
  • Resistance 1 Ω to 100 kΩ
  • Frequency measurement 45 Hz to 66 Hz
  • Works with wires up to AWG 4/0 (120 mm2) with a 17.8 mm jaw opening
  • HOLD button temporarily freezes the reading for easy viewing
  • Easy to read display with backlight
  • Accepts optional Fluke TPAK Magnetic Meter Hanger for convenient operation
  • Standard two-year warranty; extendable to 4 years through product registration within 45 days of purchase+

Tips: FieldSense Technology

Do not hold or touch wire you are testing during a measurement. Use the black probe to make the ground connection if:
  • wearing gloves or insulated footwear
  • standing on an insulated ladder
  • additional ground contact is required for the application

FieldSense measurement looks like this when properly grounded:

Correct Display
  • Display color turns green
  • Display shows a valid measurement >16 V rather than dashes or 0.0
  • shows for measurement ≥30 V
* Voltage measurement requires capacitive path to ground, provided through user in most applications. Ground connection via test lead may be required in some situations.
+ Register product online within 45 days of purchase to extend warranty to four years. See for details. Two-year additional warranty offer may be discontinued without notice
Measurement Specifications


Requires test leads




ac voltage True-rms


1000 V

1 V

± (3 % + 3 counts) 45 Hz - 66 Hz[2][3]

ac current True-rms


200.0 A

0.1 A

± (3% + 3 counts) 45 Hz - 66 Hz

frequency (Hz)


45 Hz – 66 Hz

1 Hz

± (1% + 2 counts)[3]

Volts ac True-rms


1000 V

1 V

± (1.5% + 2 counts) 45 Hz - 66 Hz

Volts dc


1000 V

1 V

± (1% + 2 counts)



2000 Ω

1 Ω

± (1% + 2 counts)


20.00 kΩ

0.01 kΩ


100.0 kΩ

0.1 kΩ



1000 V CAT III
600 V CAT IV



Accuracy[1]: ± ( [ % of reading] + [number of least significant digits] ). Accuracy is specified for 1 year after calibration, at 18 °C to 28 °C (64 °F to 82 °F) with relative humidity to 90 %. AC measurements are ac-coupled, RMS responding.
Accuracy[2]: Add 3 % without an external ground connection. External ground connection required for user wearing insulated gloves, standing on an insulated ladder, or otherwise insulated from earth ground.
Accuracy[3]: FieldSense is specified from 16 V to 100 % of range.

General Specifications


1-year calibration cycle


61.1 x 259.3 x 43.8 mm

Jaw opening

17.8 mm


0.35 kg (0.78 lb)



-10 °C to +50 °C (14 °F to 122 °F)
-30 °C to +60 °C (-22 °F to +140 °F)



2,000 m (6,562 feet)
10,000 m (32,808 feet)

Relative Humidity

0% to 90%, 5 °C to 30 °C (41 °F to 86 °F)
0% to 75%, 30°C to 40 °C (86 °F to 104 °F)
0% to 45%, 40°C to 50 °C (104 °F to 122 °F)

Battery Type and Life

2 x AA (IEC LR6); 360 hours continuous, typical; 200 hours using FieldSense

Temperature coefficient

0.1 x (specified accuracy) / °C for <18°C or >28 °C
(< 64.4 °F or > 82.4 °F)


IEC/EN 61010-1: Pollution Degree 2

Electromagnetic Environment

IEC/EN 61326-1: Portable

Model NameDescription
Fluke T6-1000


  • Attached test leads with removable 4 mm probe caps, user documentation
Learn about the T6 Electrical Testers
Fred Hutch - T6
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