|Item Weight||0.704 ounces|
|Product Dimensions||10.1 x 5.4 x 1.5 inches|
|Item model number||CB10|
|Batteries||1 9V batteries required. (included)|
|Is Discontinued By Manufacturer||No|
|Size||Circuit Breaker Finder|
|Item Package Quantity||1|
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Extech CB10 Circuit Breaker Finder
- Make sure this fits by entering your model number.
- Simply plug the GFCI Transmitter into an outlet and trace for the correct breaker at the electrical box
- IR resolution - 43,200 (240x180) pixels - far exceeds RESNET standard; Measurement modes include 3 Spots, 3 Area Box, Isotherm, Auto Hot/Cold spots
- UL Listed and CE approved
- Tests GFCI circuits
- LED indication of 2 test conditions and 5 wiring faults
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From the manufacturer
- CB10 Circuit Breaker Finder (1 Receiver, 1 GFCI Transmitter)
- 9-Volt Battery
- Operating instructions
The CB10 is an AC Circuit Breaker Finder/Receptacle Tester that locates circuit breakers and tests receptacle wiring. It allows the user to quickly locate 110 Volt to 125-Volt AC circuit breakers and fuses. When the correct circuit breaker is found, flashing LEDs and an audible beeper provide no-miss indication. The CB10 also features a variable sensitivity adjustment to pinpoint the correct circuit breaker.
This product is complete with a year warranty, the receiver and GFCI transmitter and a 9V battery for the receiver.
- UL Listed and CE approved
- Dimensions (Receiver): 6.4 x 2.2 x 1.5” (162 x 55 x 38mm)
- Dimensions (Transmitter): 3.25 x 1.75 x 1” (83 x 44 x 25mm)
Locate circuit breakers quickly and easily
Quickly locate 110V to 125VAC circuit breakers and fuses.
Flashing LEDs and audible beeper for circuit breaker indication.
Variable Sensitivity adjustment to pinpoint correct circuit breaker.
Convenient 3-in-1 tool
Locate branch circuit breakers without flipping breakers to other circuits, confirm proper wiring during electrical wiring installation or repair, and test receptacle ground fault operation.
Transmitter and Receiver snap together for easy storage.
Easy to read GFCI test indicators
Bright Red and Green LED’s indicate if receptacle is correctly wired or six fault conditions.
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From the Manufacturer
Locates the correct circuit breaker or fuse without turning off the power. Simply plug the transmitter into an outlet and trace for the correct breaker at the electrical box. Transmitter also verifies wiring and tests GFCI operation. Bright red and green LEDs indicate if receptacle is correctly wired or will indicate which of the 5 fault conditions exists. Convenient storage position for transmitter/receptacle tester. Complete with Receiver, GFCI Transmitter, and 9V battery.
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Second reason I went with this unit is the price. I got it for a steal below $200 when the price dropped on amazon. That makes it nearly half the price of the other two units mentioned. Im always willing to pay for quality but all units appeared fairly consistent in that category. And frankly, as a home inspector, this still isn't a tool I use a ton. I wanted this as a further diagnostic tool when other factors lead me to believe there is a problem. Given the fact that nearly every home will show some issue in its wiring, mainly high voltage drop, its not practical to call it out every time.
I do wish this unit would be able to detect a bootleg ground and display it right of the bat. But If you know how to interpret the results determining if a bootleg ground is present is easy.
One problem I do have with the unit is that when testing ground impedance it will trip a gfci outlet or circuit if the outlet is downstream of one. That being said, the other units may also cause this to happen as a result of how that is tested. I have not owned and Ideal or Amprobe so i cannot speak to that.
The biggest annoyance I have faced with this unit is that the power cord is twisted so that the plug is turned sideways. This means when testing I have to twist the cord to plug it in or hold the unit sideways. Highly annoying and also will no doubt damage the cord over time.
Finally, the reason I purchase the CT80 over the cheaper model was the ability to test AFCI circuits. To my knowledge their is really no other way to test AFCI circuits other than at the breaker. To date, the afci test has not worked on any circuits I have attempted to test. This was something I came across in my research and frankly, given the price I got the unit for, not something that is a huge deal to me. But I would certainly suggest if you are looking into a circuit analyzer it is probably not worth the extra money to get the CT80.
Bottom Line, I would definitely recommend this product. It has enabled me to find and confirm many issues in wiring that has gone along way to saving my clients money and making sure their homes are safe! Its a specialty tool for sure. I can't tell you how many electricians have never even heard of a circuit analyzer and are in love with this unit when they see it. If you have use for it and will use it enough to justify spending the money then i would highly recommend.
(1) plug the thing into an outlet
(2) go to the circuit breaker and set the sensor to the highest sensitivity
(3) hoover it very closely (or touching) the circuits -- going up-and-down or side-to-side (depending on the circuit layout)
(4) once the sensor detects the right circuit -- in the general vicinity -- continue to reduce the sensitivity until the alarm ONLY goes off when it's directly over the right circuit.
I know the above sounds involved -- but once you do it a couple times -- the remaining ones only take 10-15 seconds.
Top international reviews
This instrument is so easy and bang on. If only they'd sell a kit to fit in a light socket or probes to prick wires when no receptacles or sockets are available.
My husband highly recommends this model.
-Was able to master the sensitivity wheel after a few tries. Accurately traced circuits
-Bright LEDS and a loud tone: Good for commercial environments
-After 14 months the ground prong popped out (and it was not abused(lived in my meter bag), just used regularly (~15-20 times per month)): This renders the GFI test/circuit verification useless. Still tones a circuit, but I like the combo function.
Summary: Was good while it lasted, but didn't last long enough in production. Too bad.
Isolating the specific breaker is straightforward (so long as you follow the damned instructions, the orientation matters!), aside from the sensitivity adjustment needing some very small adjustments to get the right range: a very slight movement is the difference between isolating down to 3 breakers, 1 exact breaker, and not getting any signal at all. However, that sort of thing is kinda inherent to how these work, so I doubt any other tool will do better without costing hundreds more.
More expensive options are built sturdier, but the manual adjustment on the Extech makes it far more functional than any breaker finder I've used previously. I highly recommend it.
My electrician uses this and said there’s a way to use it: you have to play with the scroll during the process to change the sensitivity.