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10 Best Clamp Meters 2025 in the United States

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Our Top Picks

#1

Winner

Fluke - FLUKE-376 FC 376 FC 1000A Ac/Dc TRMS Wireless Clamp W/Iflex

Rating
10.0
Chosen by1,467
Jaw Opening Size
Additional Functions

Most important from
842 reviews

Jaw Opening Size
The iFlex probe is incredibly useful for fitting around large cables.
Additional Functions
The Bluetooth function allows remote monitoring, enhancing safety and convenience.

The Fluke 376FC AC/DC Clamp Meter is designed for industrial and commercial electricians, offering a range of features that cater to their specific needs. It measures both AC and DC currents, with a robust current measurement range, making it versatile for various electrical applications. The inclusion of the iFlex current probe allows measurements in tight spaces, thanks to its flexible design. This can be particularly useful when dealing with complicated wiring setups.

One of the standout features is the True RMS capability, which provides accurate readings even for non-linear loads, a common scenario in modern electrical systems. The inrush measurement function helps to capture the initial surge of current, which is essential for diagnosing equipment behavior.

The Bluetooth connectivity is another significant advantage, allowing electricians to connect the meter to their smartphones. This feature means they can remotely log and monitor measurements, which enhances safety by keeping them at a distance while working on live circuits. The logging capabilities also make it easier to capture intermittent faults without needing constant supervision of the meter.

However, there are some potential drawbacks to consider. While the Fluke 376FC is packed with features, it may be more complex for beginners who aren't familiar with advanced measurements or smartphone connectivity. Additionally, its size could be a concern for those seeking a more compact tool, especially if they need to carry it around frequently. Display and readability are generally good, but in bright light, some users might find it challenging to view the readings clearly. Lastly, as with many professional-grade tools, it comes at a higher price point, which might not be justifiable for occasional users or DIY enthusiasts.

The Fluke 376FC is highly suitable for professionals needing a reliable and versatile clamp meter, particularly in industrial settings. Its advanced features cater well to those who require detailed and accurate electrical measurements.

Rating
10.0
Chosen by1,467
Jaw Opening Size
Additional Functions

Most important from
842 reviews

Jaw Opening Size
The iFlex probe is incredibly useful for fitting around large cables.
Additional Functions
The Bluetooth function allows remote monitoring, enhancing safety and convenience.
#2

Fluke 378FC AC/DC TRMS Non-Contact Voltage Wireless Clamp w/PQ Indicator & iFlex

Rating
9.7
Current Measurement Range
AC/DC Measurement
True RMS

Most important from
197 reviews

Current Measurement Range
FieldSense is effective for quick approximations of current and voltage, but proper grounding is crucial for accuracy.
AC/DC Measurement
Versatile for both single and 3-phase power, solar, and other DC systems, making it a go-to meter for everyday use.
True RMS
For high accuracy and precise readings, using test probes is necessary since the clamp isn't designed for precision.
Additional Functions
FieldSense technology enhances speed and convenience in taking measurements, making workflows more efficient.
Safety Ratings
Ideal for high voltage work, compressors, motors, and quick phase-to-phase measurements without needing to stick probes around.

The Fluke 378FC AC/DC TRMS Non-Contact Voltage Wireless Clamp is a solid choice for both professionals and DIY enthusiasts who require reliable and versatile electrical measurement tools. One of its standout features is the FieldSense technology, which allows users to measure voltage and current without needing to make direct contact with live wires. This not only enhances safety but also makes testing quicker and more efficient, especially in potentially hazardous environments. Furthermore, it provides true RMS measurements, ensuring accuracy when dealing with non-linear loads, which is crucial for diagnosing electrical systems accurately.

The clamp's capability to perform complete 3-phase voltage and current tests helps streamline the process, reducing the number of steps needed to gather essential readings. Additionally, the power quality indicator is a valuable feature, alerting users to any issues with the equipment or power line, thus facilitating proactive maintenance.

The display is generally user-friendly, but depending on the lighting conditions, visibility might be an issue for some users, especially in bright sunlight or dim settings. The Fluke 378FC is a feature-rich clamp meter that excels in safety and accuracy, making it suitable for various electrical testing applications.

Rating
9.7
Current Measurement Range
AC/DC Measurement
True RMS

Most important from
197 reviews

Current Measurement Range
FieldSense is effective for quick approximations of current and voltage, but proper grounding is crucial for accuracy.
AC/DC Measurement
Versatile for both single and 3-phase power, solar, and other DC systems, making it a go-to meter for everyday use.
True RMS
For high accuracy and precise readings, using test probes is necessary since the clamp isn't designed for precision.
Additional Functions
FieldSense technology enhances speed and convenience in taking measurements, making workflows more efficient.
Safety Ratings
Ideal for high voltage work, compressors, motors, and quick phase-to-phase measurements without needing to stick probes around.
#3

Fluke 902 FC HVAC True-RMS Clamp Meter

Rating
9.1
Additional Functions

Most important from
555 reviews

Additional Functions
Capacitor measurements are very accurate.

The Fluke 902 FC HVAC True-RMS Clamp Meter is a solid choice for professionals, particularly in the HVAC field. It stands out with its ability to measure 200 DC current, which is useful for assessing flame rods, and has an extended resistance range up to 60k, making it suitable for measuring thermistors. Additionally, it can capture flue gas temperatures, which adds to its versatility for HVAC applications.

The True-RMS feature ensures accurate measurements on non-linear signals, a crucial aspect for precise diagnostics in fluctuating environments. One of the standout features is its Bluetooth capability, allowing the meter to connect to your phone through the Fluke Connect app. This can significantly enhance productivity and safety by enabling remote monitoring and data recording. The product is also relatively lightweight at 419 grams and powered by two AA batteries, which are included.

The Fluke 902 FC offers robust functionality for HVAC professionals but may require a closer look at some specific user needs.

Rating
9.1
Additional Functions

Most important from
555 reviews

Additional Functions
Capacitor measurements are very accurate.

Buying Guide for the Best Clamp Meters

Choosing the right clamp meter can be a bit overwhelming, but understanding the key specifications can help you make an informed decision. A clamp meter is a versatile tool used to measure electrical current without having to disconnect the circuit. It's essential for electricians, technicians, and even DIY enthusiasts who need to troubleshoot electrical issues safely and efficiently. When selecting a clamp meter, consider the following key specifications to ensure it meets your needs and provides accurate readings for your specific applications.
Current Measurement RangeThe current measurement range indicates the maximum and minimum current the clamp meter can measure. This is important because it determines the types of electrical systems you can work with. Clamp meters typically have ranges from a few milliamps (mA) to several hundred amps (A). For residential or light commercial use, a range up to 400A is usually sufficient. For industrial applications, you might need a meter that can handle up to 1000A or more. Choose a clamp meter with a range that covers the highest current you expect to measure.
AC/DC MeasurementClamp meters can measure either AC (alternating current), DC (direct current), or both. AC measurement is common in household and commercial electrical systems, while DC measurement is essential for automotive, solar, and battery applications. If you only need to measure household currents, an AC-only clamp meter will suffice. However, if you work with a variety of electrical systems, a clamp meter that can measure both AC and DC currents will be more versatile and useful.
Jaw Opening SizeThe jaw opening size determines the maximum diameter of the conductor the clamp meter can encircle. This is crucial for ensuring the meter can fit around the wires or cables you need to measure. Jaw openings typically range from 0.5 inches to over 2 inches. For standard household wiring, a smaller jaw opening is usually adequate. For larger industrial cables, you'll need a clamp meter with a larger jaw opening. Consider the size of the conductors you'll be working with to choose the appropriate jaw opening size.
True RMSTrue RMS (Root Mean Square) capability allows the clamp meter to provide accurate readings for both sinusoidal and non-sinusoidal AC waveforms. This is important for measuring current in systems with variable frequency drives, electronic ballasts, or other non-linear loads. If you work with modern electrical systems that may have distorted waveforms, a True RMS clamp meter is essential for accurate measurements. For basic applications with purely sinusoidal waveforms, a standard clamp meter without True RMS may be sufficient.
Additional FunctionsMany clamp meters come with additional functions such as voltage measurement, resistance measurement, continuity testing, and temperature measurement. These features can add versatility to your tool, allowing you to perform multiple tests with a single device. If you need a multi-functional tool for various electrical tasks, look for a clamp meter with these additional capabilities. However, if you only need to measure current, a basic clamp meter without extra functions may be more straightforward and easier to use.
Display and ReadabilityThe display of the clamp meter should be clear and easy to read, even in low-light conditions. Look for features like a backlit display, large digits, and a high-contrast screen. Some clamp meters also have data hold functions to freeze the reading on the display, which can be helpful when working in awkward positions. Choose a clamp meter with a display that you can easily read in the environments where you'll be using it.
Safety RatingsSafety ratings, such as CAT (Category) ratings, indicate the environments in which the clamp meter can be safely used. These ratings are based on the potential transient overvoltages that the meter can withstand. For example, CAT III is suitable for distribution panels and fixed installations, while CAT IV is for outdoor installations and utility connections. Always choose a clamp meter with a safety rating appropriate for the highest category of electrical environment you will be working in to ensure your safety.

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