Extech Instruments CB10 User Manual

User Guide
Circuit Breaker Finder and GFCI
Receptacle Tester
Extech CB10
Introduction
Congratulations on your purchase of the Extech Model
CB10 Circuit Breaker Finder and Receptacle Tester. This
instrument is shipped fully tested and calibrated and, with
proper use, will provide years of reliable service.
Meter Description
Receiver
1. Indicating LED and Beeper
2. ON/OFF and Sensitivity adjust
3. Transmitter storage plug
Note that battery compartment is located on
rear of receiver
Transmitter
4. Receptacle LED coding scheme
5. GFCI test button
6. Receptacle LED’s
Safety
This symbol adjacent to another symbol,
terminal or operating device indicates that
the operator must refer to an explanation in
the Operating Instructions to avoid personal
injury or damage to the meter.
This WARNING symbol indicates a
potentially hazardous situation, which if not
avoided, could result in death or serious
injury.
This CAUTION symbol indicates a
potentially hazardous situation, which if not
avoided, may result damage to the product.
This symbol indicates that a device is
protected throughout by double insulation or
reinforced insulation.
Specifications
Operating Voltage 90 to 120V
Operating Frequency 47 to 63Hz
Power supply 9V battery (receiver)
Operating Temperature 41ºF to 104ºF (5ºC to 40ºC)
Storage Temperature -4
o
F to 140
o
F (-20
o
C to 60
o
C)
Operating Humidity Max 80% up to 87ºF (31ºC)
decreasing linearly to 50% at
104ºF (40ºC)
Storage Humidity <80%
Operating Altitude 7000ft. (2000meters) maximum.
Weight 5.9oz (167g)
Dimensions 8.5” x 2.2” x 1.5” (215 x 56 x
38mm)
Approvals UL CE
UL Listed The UL mark does not indicate that
this product has been evaluated
for the accuracy of its readings.
Operation
WARNING: Always test on a known good circuit before
use.
WARNING: Refer all indicated problems to a qualified
electrician.
Locating a Circuit Breaker or Fuse
The transmitter injects a signal onto the circuit which can be
detected by the receiver. The receiver will beep when the
signal is detected. The sensitivity adjustment allows for tracing
and pinpointing the exact circuit breaker or fuse protecting the
selected circuit.
1. Plug the Transmitter / Receptacle Tester into a powered
outlet. The two green LED’s should illuminate.
CAUTION
WARNING
6
5
4
1
2
3

Extech Instruments CB10 Specifications

General

Category	Test Equipment
Model	CB10
Data Hold	Yes
Backlight	No
Battery Type	9V
Type	Clamp Meter
Display	LCD
Jaw Opening	1.2 inches (30 mm)

Summary

Meter Description

Receiver Components

Details components like LED, Beeper, ON/OFF, Sensitivity, and storage plug.

Transmitter Components

Details components like LED coding scheme, GFCI test button, and receptacle LEDs.

Specifications

Safety Information

Safety Symbols and Warnings

Explains symbols and provides essential safety notices regarding hazards and potential injury or damage.

Operation and Testing

Locating a Circuit Breaker or Fuse

Explains how to use the receiver to find the correct circuit breaker by injecting a signal.

Receptacle Wiring Test

Describes how to plug the transmitter into an outlet to check wiring conditions via LED indicators.

Receptacle GFCI Test

Details the procedure to test GFCI receptacle operation using the transmitter's test button.

Maintenance and Support

Replacing the Battery

Instructions for replacing the 9V battery in the receiver when performance degrades.

Warranty and Contact

Outlines FLIR Systems' one-year limited warranty and provides support contact information.