Line Splitter 10x

This Klein Tools line splitter works exactly as advertised and earns every bit of 5 stars. For anyone using a clamp meter to measure current draw on standard North American outlets, this little tool is genuinely indispensable. The 10x measurement multiplier makes it easy to get accurate, readable current readings on low-draw circuits where a standard clamp meter alone struggles to give a precise result—just divide by 10 and you have your actual amperage. It handles up to 15A comfortably, covers the most common outlet configurations you'll encounter, and the build quality is exactly what you'd expect from Klein Tools—solid, reliable, and made to last. Whether you're doing electrical diagnostics, troubleshooting appliances, or checking circuit loads in a home or RV, this line splitter makes the job cleaner and more accurate. A simple, well-made tool that delivers exactly what it promises every single time.

Klein never disappoints, and this is no exception. It’s a simple tool, but it works exactly as it should and makes measuring current with a clamp meter much easier. Build quality is solid and durable, like you’d expect from Klein. It feels like it can handle regular use without any issues. It’s easy to use and gives accurate readings without any hassle, which is exactly what you want when working with electrical. Overall, dependable, well-made, and does the job right.

High quality but don’t forget it multiplies current by 10x. At first I was surprised by the draw until I read the instructions.

Splits the hot and neutral so you can use amp clamp to check amp draw on a 120v ac circuit

Good for measuring current on outlets and power cords.

Quality item. Dont be confused by the multiplier.

Arrived with no damage to package. Waiting on the clamp multimeter to test it out.

This item works great, and it’s compact to boot. Judging from instructions for clamp meters and accessory current clamps, many folks don’t seem to realize that one cannot measure current in a multiconductor flexible cord with a clamp meter, because the magnetic fields cancel. I’ve seen more than a few people—including a former boss—tripped up by this. What’s needed is a line splitter. Interestingly, none of my Fluke instructions suggest that as the solution. It’s possible to make your own splitter, as I did (picture 3). It works fine, but it’s a bit awkward to carry. It’s much easier—and less expensive—to use a commercial splitter. Commercial splitters are also more compact (pictures 1 and 4). The homemade splitter has one advantage, though: it’s made with #12 AWG wire, so it should safely handle 20 A. It’s also possible to do direct measurements using a multimeter’s current inputs, but connecting everything can be a chore. I have a device that connects directly to a meter’s current inputs (picture 2), simplifying the process. But it’s dicey when trying to measure more than 10 A on most meters without blowing a fuse. I also have an Extech splitter (https://www.amazon.com/dp/B0000YHN9W), which also works well and offers a 1× reading as well as 10×. But the 1× loop is more a curiosity than anything else, and the extra loop makes it longer. I probably got it simply because previous splitters I had included 1× sections. There’s really no reason to not use the 10× multiplier, which effectively provides an extra digit of resolution—often a big deal when measuring small currents. The Extech splitter does include voltage test points, so it’s possible to measure voltage and current when the device is operating—sometimes useful if the device is drawing enough current to cause noticeable voltage drop. Measuring voltage and current simultaneously requires a second meter, but if the load is steady, the measurements can be made sequentially with a single meter. When making simultaneous measurements, keeping the voltage test leads in the test holes on the Extech splitter can be a bit of a pain. It’s much easier to use a Klein 69357 adapter (https://www.amazon.com/dp/B0BN2LTKTB/) for the voltage measurement, as shown using a Fluke 323 clamp meter for the current and a Fluke 112 DMM for the voltage. So perhaps the lack of voltage test points isn’t really much of a disadvantage—and the splitter is more compact without them. A comparison of all of these methods using a Fluke 87 (with a Fluke i400 current clamp for the splitters) got results that were within about ±0.02 A actual current—more than close enough for government work. There are other splitters, like the Triplett ET200 (https://www.amazon.com/dp/B07YT6LQBH) and FLIR TA55 (https://www.amazon.com/dp/B00NMVR2DM) that will probably also do the job. I can only really comment on the Extech and Klein; I would recommend either one. At least one reviewer has suggested using a power meter (I have the P3 P4400 Kill A Watt Electricity Usage Monitor, https://www.amazon.com/dp/B00009MDBU). Though it’s more expensive than most line splitters, it’s very easy to use and doesn’t require a meter. I can’t imagine an electrician showing up with one, but for someone who only needs occasional measurements, this could be a good option—and it provides much additional information. I wouldn’t trust it like the Fluke meters, but the indicated values were mighty close to those given by the high-priced tools. Again, close enough for government work. I guess I also would recommend this. There are less-expensive similar devices that I have not tried. If you need to measure current in a plug-connected device, a line splitter is essential—don’t leave home without one.

Nice items and good quality.

Desde hace mucho esperaba una herramienta así y no sabía que existía. Gracias Klein tools por pensar en todo

Brand-new unit. Works as expected.

Muy buena calidad y funcionalidad. Super útil

Idéal pour vérifier le courant sur un appareil 120 volts Au lieu d'avoir un " split cord" pour pouvoir placer l'amperemetre..il suffit de brancher votre équipement a vérifier dans le socle et l'appareil en fiche..vs placez l'amperemetre dans le " beignet" de détection Moi je le laisse dans mon kit d'amperemetre