Great video. I played it for the 16 electricians I have working for my electrical contracting business during a meeting. There were a few who didn't seem to understand that nowadays especially, it is very important to use a true rms amp meter. I made it mandatory upon hiring that all of my service electricians have a quality true rms amp meter. I started requiring this after spending money on an embarrasing call-back where the customer had a breaker tripping, and our electrician said the breaker was bad because their meter showed it was not loaded over its rating. Our electrician replaced an expensive breaker, left, and it tripped again because it was actually overloaded. Very similar situation to your test where one meter showed under 15 amps and the other showed over 20 amps. Also, using a non true rms meter can lead to you overloading an existing circuit with additional loads if you think the circuit has capacity left in it to use after checking its existing full load current. Thanks for the video, they needed to hear it from someone else also. It worked.

I literally was just explaining to wife why I was watching this video and used the whole 15A circuit overloading and then you said something very similar. :) I like you practical thinking.

Thanks for the tip. I just bought a meter and quickly checked it was True RMS. Fortunately for me it was! Also, I've never seen an AC Line Splitter before, so that was really useful too. Just bought one of those as well. Great video!

Great video, I had no idea what the "True RMS" function was until watching this. Just ordered a UNI-T UT210 to replace my ancient Amprobe. Thanks a lot, man!

Great no nonsense explanation. I appreciate your tutorials and have learned a lot about dune and nonsine wave forms. I appreciate you

Thank you. Did not realize the effect of all my "switching" power supplies.

The 21 people that gave this video a thumbs down bought their multimeters from Radio Shack.

Root Mean Square (RMS) is the same as the quadratic mean - or the square root of the mean square. The RMS we use in GIS-based mapping and data collection is the measure of imperfection of the fit of the estimator to the data. In this case, it is the value of the constant direct current that would generate the same dissipation in a resistive load. Same important statistical principle - but quite different applications. Thanks for the comparison to my non-RMS Klein multimeter (doh!). I'll keep that 40% correction in mind.

thanks for all your videos, it is very useful to understand the functions it comes with. thanks.

Excellent info. If the VFDs and inverters are installed wrong or are going bad, the dirty power harmonics can cause all kinds of problems on the line. 😎 Nice scope. ✨

Hey buddy.... I'm looking for a good and safe clamp meter around the 150 dollar range and was looking at the Klein cl800 can you tell me if it's been a good clamp meter and what's the minimum current it can read from the clamp AC AND DC.... THANK YOU VERY MUCH

+MultiMeter Channel Excellent video, and clearly explained to me how the current noise can be affected by electrical devices in an area, and therefore why a TrueRMS Clamp meter is the best option to have around for pretty much all circumstances. Sterling work!

That black thing you can clamp on is awesome! Great video

Very informative video. Wanted to see how the waveform looks when both the are bulbs are switched on :)

bless your soul.....the best and educative info i have got this year when it comes to digital meters....the best i mean the very very very very best...thank you

This is a great informational video. I have true Rms meters but still this helped me understand how important they are in comparison to non-true RMS meters. I have subscribed to your channel and look forward to other video's you produce. Thanks!!!

thanks much for this excellent presentation. We've a 20 amp GFCI Siemen's circuit breaker that has been tripping for 10 days or so with 4 x 15 amp 2 port receptacles which has been fine for 2 years in our garage. There's only 2 x 2.7 amps garage door motors on this circuit plus a tool box with two surge protectors with nothing plugged in. Each time we open the garage door about 15 mins later the circuit trips and a reset is necessary. We just bought the CL900 by Klein, Line Splitter and the AFCI/GFCI Outlet tester. Hoping with these tools we can find the culprit.

Much obliged. Short, informative and straightforward.

a true RMS meter is essential for old house remodeling. i have had calls before someone says my meter shows 120 volts but my light is not burning. but my RMS meter shows 70 volts which is most commonly a broken neutral.

Great explanation. As long as I understand, if you want to measure only voltage, it doesn't matter if the bulb isn't incandescent (considering AC), but if you want to measure current, the possibilities of not having a sinusoidal signal are greater and it's better to use a true RMS clamp meter.

Great demonstration. I appreciate the comparisons.

This video is a great AMPERAGE/CURRENT AMP-CLAMP VIDEO. But: Q: WHEN is a NON-TRUE RMS VOLT meter, a better choice than a TRUE RMS meter?? A: Automotive alternator D.C. VOLTAGE OUTPUT measuring. Why? Alternator output should have only D.C., without any A.C. waveform, (called DIRTY D.C.), riding on top of the D.C. If an alternator diode set is bad, the dirty D.C. will NOT ALLOW a NON-TRUE-RMS voltmeter to SETTLE DOWN. The voltage display number will be erratic. BUT, a TRUE RMS meter, set to D.C. will settle down and FOOL YOU into thinking ALL IS GOOD, when in fact, the alternator is BAD.

So if you had the flourescence and the incandesance on at the same time, you would still not capture the correct amp reading with a non true rms meter?

@4:38 If you multiply 14.6 by .6 and add the result to the 14.6, you will get your approximate value of your true rms current. They are about 40% from true RMS I just read.

Excellent video. I have one line in my house on a 15 amp circuit that keeps tripping. The multi meter that I use tells me i'm good. So, I'm off to purchase a TRMS to check it out.

I had doubts with the Klein multi meter I bought with TruRMS feature. I haven't gone through all of your videos but I am confused about Amp reading with my space heater. The breaker trip when I have several devices with the space heater on. So I wanted to read the amp draw on the space heater wire. I put the clamp on the space heater black chord turn on the heater but it only reads various .013 A on the meter and not a 12 Amps. Is that how I read amps on space heater or any other appliance to check their Amp draw?

I am wondering about a clamp-on ground resistance tester rms vs not rms thanks 😊

Eloquently and well-explainef. Thank you sir!!

Thanks Please can you show us the features of (cie 2609c) clamp meter Best regards

Excellent demonstration!!!

I've got a CL800 coming for Christmas. Glad to see it passes muster. What kind of scope is that and how does it measure current when hooked up in parallel? Coming from automotive* (DC) that's an interesting trick. All the current measuring devices I've seen are either inductive clamps or hooked up in series. *Working on an industrial electrician certificate, hence the new meter. Working on cars sucks. Do not recommend.

at 2:35 what is that black thing that the clampmeters are clipped on to? Whats it called and where can I get one? Thanks.

Question - for testing and finding parasitic current draw on cars, am I right in thinking that true RMS meter is NOT required...? Mike

Great video. Very clear and well explained. Thank you!

they could make an explanatory video of the cl2300. you don’t have a video for such a feature-rich tool, I bought a 2300 cl in Brazil, but I’ve already had problems with two that I will acquire ... one year of use ...

I'm installing roughly 50 linear LED lighting fixtures on 3 circuits in a 2 level parkade. Am I dealing with a distorted wave form here, will I get a much more accurate amperage draw reading with a True RMS meter?

Hmmm.. Ok, but would that work the same way if I just add + 25% to the readings of a standard RMS meter instead?..

What is the brand and model of the line splitter you demonstrated in the video? The link to Amazon features a different product. Thank you.

THANK YOU, that's some wasted money waiting to happen and NO ONE has said a thing about True vs just RMS. I just like to know why the difference just in case it REALLY matters, I would say that's a big deal and it REALLY matters.

nice information, had no idea of the true RMS in my clamp meter

It's funny to read the comments. All the home owners and technicians that don't understand the different between average responding meters and RMS meters. By the way there isn't a distinction between True RMS and RMS. RMS is a mathematical definition. True RMS and RMS are EXACTLY the same. The RMS specification is why some meters cost more than other meters. It cost more to add the digital signal processing circuitry therefore those meters cost more. I can't tell you how many times as an electrical engineer I've seen electricians measure the current on the output of a VFD using an average responding meter. I always tell them to throw that piece of shit in the trash. Then I have to go out to my car and get my Fluke 87. I just roll my eyes at electricians. They think they know shit until they encounter and engineer who has to school them on the difference between RMS and Average. Unless you understand calculus you can forget trying to explain it to them.

Recently bought Meco 36 Auto BL TRMS with 6000 Counts clamp meter only problem i am facing is with and without connecting probe voltage of 3 mv and ampere of 40 mA...

Please make an video for how to measure power for machine tools ( Milling, Turning) using these current clamps. I couldn't find this video on whole youtube. Its really important.

Very excellent video.really appreciate for imparting useful information.

Where can I find such kind of 220V AC line splitter ? Thanks

how about those new smart multimeters that are true rms and they also have functions like clamp meter are they like true rms clamp meters?

Great video. Now I know what kind to buy for my need!

Could you pls let me know the brand and the model of the Oscope that you’re using in this video? Thanks 🙏🏼

Very nice demonstration.What will be the measurements of a single diode,half wave rectified mains voltage with an averaging and a true RMS multimeter?

Very informative video. Can you tell me if the Fieldpiece SC640 measures true RMS current using the inductive clamp?

I can't seem to find a line splitter like the one you used that can handle over 15 amps? What model ac line splitter are you using as I'd like to purchase the same one if possible? Thanks again for the informative video. And exactly how much amperage can (your exact true rms) ac clamp meter test with a ac line splitter

Very enlightening!

As useful a video as it gets. Thanks.

What about DC current? I rarely measure anything that is ac. I normally look at 8-25v 20-200A DC

How does this compare to using a TRMS VOM with a mV to AAC current transducer such as the Redfish iDVM 510 with the IDVM 333 current clamp vs a straight TRMS clamp on meter? Do you get the same results?

Awesome info. I'm a newby to electrics, so thanks for your work.

What about cheap watt meters from ebay? I doubt its TRMS. If not, then it is useless and you can only measure power of traditional bulb or toaster?

I hate asking off topic but how do you calculate the series resistor resistance for the current you are measuring?

Is the Klein CL 700 a good True RMS Meter to use for home inspections?

Pulse wave modulation PWM. Needs RMS. AKA switching power supply

Amazing!! Could you tell more how it operates?

Thank you. Learn something new today.

Excellent video. Learned a lot. Thanks.

Many thanks for the simple but comprehensive explanation. Also, I've not come across an AC line splitter before. Am looking for a clamp meter that will also measure DC current too, and the TENMA 72-7226 is looking the likely purchase. It is also true RMS so a possible win win. Cheers.

Great explanation!

So if you have a true rms multimeter and you use an amp clamp attachment does that make it a true rms clamp meter

Great video man! Very informative 👍😁👍.

Thanks for the nice video. If possible Pls make a video to measure voltage of VFD out put with ordinary multimeter and a multimeter with low pass filter.

Thanks for the video thanks for the explanation.

u r great sir,,very good & simple explanation...

Thanks are we when mesurement to inverter compressore (for HVAC) are we use True rms clamp meter for voltaj

Awesome simple and concise

Great info bro...keep up the good work...

what is the resistance and wattage of the resistor used? thanks

When you had your oscope across the resistor to show waveform was it in volts or amps?

What scope meter is that? I’ve been looking for one to help diagnose single phase power quality problems, and that looks like it fits the bill.

You sound like you know your meters. I'd like your input on my next new clamp meter. I'm current using a Milwaukee 2237-20 and I've had it going on 6 years but it ready to be replaced. I'm an electrician who is primarily involved in diagnostics in older residential applications so I use most every function on the milwaukee 2237-20 on a daily basis aside from the DC amps. I love the form factor, the display is wonderful and I actually use the led light but that bugger seems to take forever to take a measurement. It zeros before every measurement literally taking 3 seconds every time. Even the continuity pulse is slow. I need to replace the meter and I'd like something faster and a lot of the guys I work with use fluke but they are not as feature rich for the cost. I looked at possibly getting another milwaukee as well as meters from Fluke, Flir, Klein, Amprobe, Greenlee, Extech and others. The milwaukee 2237-20 cost me $225 Canadian but I'd go as high as $350. I need something that will handle adverse weather as I spend a fair bit of time outside. Moisture, dust and low temps are the daily norm. What meter models are out there that closely match my milwaukee but will read faster? Thanks, great channel!

Great! Another wonderful video!! thank you for sharing!!!

A very helpful information. thanks. Out of my curiosity, MCB rating is based on what type of amp rating? RMS or trms?

Great video! What is your opinion on the fluke 325 vs 902 and the t5-1000

I like your videos I'm interested in buying a Klein clamp meter ..

Can you tell me which make & model of oscilloscope you are using? It looks like it may be a good one for my current needs with having two separate test areas. Thanks for the video.

Cool educational video , i've learned alot watching this. Where can I get this tester you clamped the Amp meter too?

What is that adapter called you are clamping on?

I bought the Fluke 324 for £105. Deal!

what is the name of the device you had plugged into the extension cords to be able to use the clamp meter?

Looking to get one, you recommend Fluke 323 or a Klein cl800?

now you tell me. I just ordered a RMS clampmeter. Update I just checked what I ordered and it IS true rms!!!

Very helfull information. Thank you very much.

Very well presented. learnt smthing.

Great content thank you 😊 🙏 👍 👏

This only applies to AC right? DC 'true RMS' don't exist?

Very nice, thank you.

what is the value and power of the resistor used?

Great educational info, thanks! - how about a video of measuring with VFD-suitable meter & not suitable? I'm mostly interested about the amperage measurement, how much can it differ?

Good info.TU. i just got a clamp meter that is advertised as true RMS but no way of knowing if it is.

😀👍🏿Good Stuff,GreatTips

Thanks for the interesting video. I have a question, what clamp mulitmeter would you recomend from 8 DC Amps to 140 DC Amps.

excellent video

Excellent information