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User Manual
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
Receptacle LED coding scheme
4.
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
WARNING
hazardous situation, which if not avoided, could
result in death or serious injury.
This CAUTION symbol indicates a potentially
CAUTION
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
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.
o
C to 60
o
C)
CB10-en-US_v2.2 5/23
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Summary of Contents for Extech Instruments CB10
- Page 1 This symbol indicates that a device is protected Introduction throughout by double insulation or reinforced Congratulations on your purchase of the Extech Model CB10 insulation. Circuit Breaker Finder and Receptacle Tester. This instrument is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
- Page 2 The three LED’s will indicate circuit condition. The diagram Extech brand products we sell. We offer NIST traceable lists all of the conditions that the CB10 can detect. The LED’s calibration for most of our products. Contact us for in this diagram represent the view from the GFCI button side of the transmitter.
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