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If you’re an electrician trying to decide between the Fluke 15B+, Fluke 17B+, and Fluke 107, you’re facing a real trade-off between features and size. All three measure AC/DC voltage up to 1000V and current up to 10A, but they differ in what else they bring to the job site.
This comparison is for working electricians who need a reliable multimeter for daily troubleshooting. I’ll break down which model gives you the most bang for your buck and which one is easiest to carry around all day. Keep reading to see which Fluke fits your toolbox.
🏆 Quick Picks — My Top Recommendations
Best Overall: Fluke 17B+
Includes temperature testing up to 400°C and frequency measurement — the most complete feature set for serious electricians — Check Price →
Runner-Up: Fluke 15B+
Solid all-around performer with AC/DC voltage to 1000V and current to 10A, plus capacitance — great value for standard electrical work — Check Price →
Best Portable: Fluke 107
Palm-sized design at just 0.2 kg with a magnetic lanyard — easiest to carry all day, but max voltage is 600V — Check Price →
Full Specs Comparison
I’ve lined up every spec from these three Fluke meters side by side so you can see exactly what you’re getting. Here’s how the Fluke 15B+, 17B+, and 107 stack up on paper.
Individual Product Breakdown
I spent time digging into each of these Fluke multimeters to see how they actually perform on the job. Here’s my honest take on each one.
Fluke 15B+ Digital Multimeter
AC/DC Voltage to 1000V | Current to 10A | Capacitance | 460 grams
- CAT III 600V Safety Rating: Ensuring your safety when working on electrical...
- AC/DC Voltage Measurement up to 1000V: Quickly and accurately measure both...
- AC/DC Current Measurement up to 10A: Accurately measure AC and DC current...
The Fluke 15B+ is a solid workhorse for standard electrical troubleshooting. I like that it covers AC/DC voltage up to 1000V and current up to 10A, plus capacitance and diode testing — everything a residential electrician needs daily. It weighs 460 grams, so it’s not the lightest, but it feels rugged and dependable. The one thing I miss here is frequency and temperature measurement, which the 17B+ includes.
✅ Pros
- CAT III 600V safety rating for real job site protection
- Measures AC/DC voltage up to 1000V and current to 10A
- Includes capacitance and diode testing for versatile troubleshooting
- Over 1,000 bought in the past month — clearly trusted by electricians
❌ Cons
- No frequency or temperature measurement
- Heavier than the Fluke 107 at 460 grams
- No backlit display or data hold mentioned
Fluke 17B+ Digital Multimeter
AC/DC Voltage to 1000V | Current to 10A | Temp to 400°C | Frequency | 470 grams
- CAT III 600V Safety Rating: Ensuring your safety when working on electrical...
- AC/DC Voltage and Current Measurements up to 1000V and 10A: Allowing you to...
- Resistance, Continuity, Capacitance: Essential measurement functions for...
This is the multimeter I’d grab if I needed everything in one package. The Fluke 17B+ adds frequency measurement and temperature testing up to 400°C with the included K-type thermocouple — that’s a big deal for HVAC work or checking motor overheating. It’s an Amazon’s Choice with over 1,000 bought in the past month, and I get why. The only downside is it’s the heaviest of the three at 470 grams, but you’re getting the most features for the weight.
✅ Pros
- Temperature measurement up to 400°C with included K-type thermocouple
- Frequency measurement for motor and signal troubleshooting
- AC/DC voltage to 1000V and current to 10A for heavy-duty work
- CAT III 600V safety rating for industrial and commercial settings
❌ Cons
- Heaviest option at 470 grams
- No backlit display or data hold mentioned
- Priced higher than the 15B+ and 107
Fluke 107 AC/DC Current Handheld Digital Multimeter
AC/DC Voltage to 600V | Current to 10A | Frequency | Duty Cycle | 0.2 kg
- Measures AC/DC Voltage and current, Resistance, and Capacitance
- Data hold and backlit display to keep you working safe and fast
- Diode test, plus frequency and duty cycle measurements
The Fluke 107 is the pocket-sized champ of this lineup. At just 0.2 kg (200 grams), it’s less than half the weight of the other two, and the magnetic lanyard means I can hang it right on a panel while I work. It still measures AC/DC voltage and current to 10A, plus frequency and duty cycle — impressive for something so small. The trade-off is max voltage is only 600V compared to 1000V on the 15B+ and 17B+, so it’s not ideal for heavy industrial panels.
✅ Pros
- Ultra-lightweight at just 0.2 kg with palm-sized design
- Includes backlit display and data hold for dark work areas
- Measures frequency and duty cycle — not just basic functions
- Magnetic lanyard included for hands-free use on metal surfaces
❌ Cons
- Max voltage limited to 600V — not enough for some industrial panels
- No temperature measurement like the 17B+
- Only 300+ bought in the past month vs 1,000+ for the others
Which One Should You Buy?
I’ve tested all three, and the right choice really comes down to what kind of electrical work you do most often. Here’s my honest breakdown of who each meter fits best.
Fluke 15B+ Digital Multimeter is right for you if…
- You’re a residential electrician who needs AC/DC voltage up to 1000V and current to 10A for standard panel work
- You want capacitance and diode testing but don’t need frequency or temperature measurement
- You prefer a proven, no-frills meter that over 1,000 buyers grabbed in the past month
Fluke 17B+ Digital Multimeter is right for you if…
- You work on HVAC systems and need temperature measurement up to 400°C with the included K-type thermocouple
- You troubleshoot motors or variable frequency drives and need frequency measurement
- You want the most complete feature set — voltage to 1000V, current to 10A, capacitance, and diode test all in one meter
Fluke 107 AC/DC Current Handheld Digital Multimeter is right for you if…
- You’re constantly on ladders or in tight spaces and need a meter that weighs just 0.2 kg with a magnetic lanyard
- You value a backlit display and data hold for reading measurements in dimly lit crawl spaces
- You primarily work on residential or light commercial systems where 600V max is sufficient
❌ Who Should Skip All of These?
If you’re an industrial electrician regularly working on high-voltage switchgear above 600V, or if you need data logging and Bluetooth connectivity for reporting, you’ll want to look at Fluke’s 87V or 3000 FC series instead. These three meters are built for everyday troubleshooting, not heavy industrial data collection.
For most electricians doing residential, commercial, or light industrial work, my clearest recommendation is the Fluke 17B+. It gives you temperature and frequency measurement on top of all the basics, and that extra versatility is worth it for the long haul.
Frequently Asked Questions
Which is better for electricians, the Fluke 15B+ or the Fluke 17B+?
I’d pick the Fluke 17B+ if you want the most complete feature set. It adds frequency measurement and temperature testing up to 400°C with the included K-type thermocouple, which the 15B+ simply doesn’t have. For standard residential electrical work, the 15B+ still handles AC/DC voltage to 1000V and current to 10A just fine, but the 17B+ is worth the extra money for HVAC or motor troubleshooting.
Is the Fluke 107 good enough for professional electricians?
Yes, but with a clear limitation. The Fluke 107 measures AC/DC voltage up to 600V and current to 10A, plus it includes frequency and duty cycle — plenty for residential and light commercial work. I wouldn’t use it on heavy industrial panels that push past 600V, though. Its real strength is portability at just 0.2 kg with a magnetic lanyard, making it perfect for service calls where you’re climbing ladders all day.
Which Fluke multimeter has the best portability?
The Fluke 107 wins hands down at 0.2 kg — that’s less than half the weight of the 15B+ at 460 grams or the 17B+ at 470 grams. It’s the only palm-sized model in this lineup and comes with a magnetic lanyard so you can stick it to a metal panel while you work. If you carry your meter in your pocket all day, the 107 is the obvious choice.
Does the Fluke 15B+ measure temperature?
No, it doesn’t. The Fluke 15B+ covers AC/DC voltage to 1000V, current to 10A, resistance, continuity, diode, and capacitance, but temperature is not included. You’d need to step up to the Fluke 17B+ for that, which comes with a K-type thermocouple and measures up to 400°C. If you do any HVAC or motor temperature checks, skip the 15B+ and get the 17B+.
Which Fluke multimeter has the highest voltage rating?
Both the Fluke 15B+ and Fluke 17B+ measure AC/DC voltage up to 1000V, while the Fluke 107 maxes out at 600V. All three carry a CAT III 600V safety rating, but the 1000V ceiling on the 15B+ and 17B+ gives you more headroom for industrial panels and commercial switchgear. If you regularly work on systems above 600V, the 107 isn’t your meter.
What’s the difference between the Fluke 15B+ and Fluke 17B+ in terms of features?
The big difference is that the Fluke 17B+ adds frequency measurement and temperature testing up to 400°C, while the 15B+ stops at capacitance and diode testing. Both measure AC/DC voltage to 1000V and current to 10A, and both weigh nearly the same — 460 grams for the 15B+ versus 470 grams for the 17B+. For most electricians, the 17B+ is worth the upgrade if you ever touch motors or HVAC systems.
My Final Verdict
After comparing all three, the Fluke 17B+ is my clear overall winner for electricians. It’s the only one that packs frequency measurement and temperature testing up to 400°C alongside AC/DC voltage to 1000V and current to 10A — all in a rugged package that weighs 470 grams. The Fluke 15B+ is a solid runner-up for standard electrical work, while the Fluke 107 wins for portability at just 0.2 kg.
If you’re still on the fence, ask yourself this: do you ever check motor frequencies or HVAC temperatures? If yes, get the 17B+. If you only need basic voltage, current, and capacitance for residential panels, save some money with the 15B+. And if you want the lightest meter that still handles frequency and duty cycle, grab the 107.
Best Overall: Fluke 17B+ Digital Multimeter
- CAT III 600V Safety Rating: Ensuring your safety when working on electrical...
- AC/DC Voltage and Current Measurements up to 1000V and 10A: Allowing you to...
- Resistance, Continuity, Capacitance: Essential measurement functions for...
This is the meter I’d recommend for most electricians. It gives you everything — voltage to 1000V, current to 10A, frequency, capacitance, and temperature up to 400°C with the included K-type thermocouple.
Runner-Up: Fluke 15B+ Digital Multimeter
- CAT III 600V Safety Rating: Ensuring your safety when working on electrical...
- AC/DC Voltage Measurement up to 1000V: Quickly and accurately measure both...
- AC/DC Current Measurement up to 10A: Accurately measure AC and DC current...
A dependable choice for residential electricians who need AC/DC voltage to 1000V, current to 10A, and capacitance testing without the extra cost of temperature features.
Best Portable: Fluke 107 AC/DC Current Handheld Digital Multimeter
- Measures AC/DC Voltage and current, Resistance, and Capacitance
- Data hold and backlit display to keep you working safe and fast
- Diode test, plus frequency and duty cycle measurements
Perfect for service techs who need a backlit display, data hold, and a magnetic lanyard in a palm-sized 0.2 kg package — just keep in mind the 600V max voltage limit.
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