Fluke 17B vs. 117 Review
When choosing between Fluke’s 17B+ and 117 multimeters, the $50-80 price difference represents more than just cost—it’s about matching your tool to your professional demands. Both models have earned their place in toolboxes worldwide, but understanding their distinct capabilities can save you money and improve your work efficiency.
Whether you’re a seasoned electrician, HVAC technician, or electronics enthusiast, selecting the right multimeter affects your daily productivity and measurement confidence. This comprehensive comparison will help you make an informed decision by examining real-world performance, key features, and value propositions of both models.
In this guide, you’ll discover the critical differences between these popular Fluke models, understand which features matter most for your specific applications, and get clear recommendations based on your professional requirements and budget constraints.
Quick Comparison Overview
The Fluke 17B+ and 117 represent different tiers in Fluke’s multimeter lineup, each designed for specific user needs and professional requirements. Understanding their fundamental differences helps narrow your decision quickly.
Specification Comparison Table
| Feature | Fluke 17B+ | Fluke 117 |
|---|---|---|
| DC Voltage Accuracy | ±0.7% | ±0.5% |
| True-RMS | No | Yes |
| Non-Contact Voltage | No | VoltAlert™ |
| Temperature Measurement | Yes | No |
| Low-Z Mode | No | Yes |
| Price Range | $100-130 | $180-220 |
Price-to-Performance Ratio
The 17B+ offers exceptional value for general electrical work and hobbyist applications, providing reliable measurements at an accessible price point. The 117 commands a premium for professional electricians who need advanced features like True-RMS measurement and non-contact voltage detection.
For residential electricians and maintenance technicians, the 117’s additional features often justify the higher cost through improved safety and diagnostic capabilities. Students and hobbyists typically find the 17B+ meets their needs without unnecessary expense.
Fluke 17B+ In-Depth Review
The Fluke 17B+ serves as an excellent entry point into professional-grade multimeters, offering reliable performance for most electrical measurement tasks. Its feature set balances essential functionality with affordability, making it popular among students, hobbyists, and professionals working within budget constraints.
Key Features and Specifications
The 17B+ includes fundamental measurement capabilities with some unique additions. Its temperature measurement function sets it apart from many competitors in this price range, accepting K-type thermocouples for HVAC and industrial applications.
The meter provides 6,000-count resolution with basic DC/AC voltage, current, resistance, capacitance, and frequency measurements. The Min/Max function captures intermittent readings, while relative mode helps with comparative measurements—features appreciated in troubleshooting scenarios.
Measurement Accuracy and Range
With ±0.7% DC voltage accuracy, the 17B+ delivers reliable measurements for most electrical work. While not as precise as the 117’s ±0.5% specification, this accuracy level suffices for standard residential and light commercial applications.
The absence of True-RMS measurement limits its effectiveness with non-sinusoidal AC waveforms common in modern electrical systems. For basic sine wave measurements and DC circuits, however, the 17B+ performs admirably.
Design and Ergonomics
Fluke’s signature yellow housing provides excellent visibility and durability. The large display remains readable in various lighting conditions, though it lacks the 117’s backlight feature. The rotary switch operates smoothly with positive detents, ensuring reliable function selection.
The meter’s compact size and lightweight design reduce fatigue during extended use. However, the button layout requires some familiarity for efficient operation compared to more intuitive professional models.
Best Applications for the 17B+
Educational environments benefit significantly from the 17B+’s feature set and price point. Students learning electrical fundamentals appreciate the temperature measurement capability and standard multimeter functions without overwhelming complexity.
Electronics hobbyists find the 17B+ ideal for project work, component testing, and circuit troubleshooting. The capacitance measurement proves particularly useful for identifying failed components in consumer electronics repair.
Fluke 117 Comprehensive Analysis
The Fluke 117 represents Fluke’s purpose-built solution for professional electricians, incorporating features specifically designed for electrical troubleshooting and maintenance work. Its advanced capabilities justify the higher price through improved safety, accuracy, and diagnostic efficiency. For a detailed comparison with the Fluke 115, which shares some similar entry-level features, check out our comprehensive Fluke 115 vs 117 comparison guide.
Electrician-Specific Features
Professional electricians face unique challenges requiring specialized measurement capabilities. The 117 addresses these needs with features like low-impedance mode for identifying ghost voltages caused by phantom readings from adjacent energized circuits.
The True-RMS measurement capability accurately reads distorted AC waveforms common in modern electrical systems. Variable frequency drives, LED lighting, and switch-mode power supplies generate complex waveforms that require True-RMS measurement for accurate assessment.
VoltAlert and Non-Contact Voltage Detection
The integrated VoltAlert™ technology provides non-contact voltage detection without requiring separate tools. This safety feature allows electricians to quickly identify energized circuits before making contact measurements, reducing shock hazards and improving workflow efficiency.
Unlike standalone non-contact detectors, the 117’s VoltAlert integrates seamlessly with the multimeter functions. The visual and audible alerts provide clear indication of voltage presence, helping prevent accidents during panel work and troubleshooting.
True-RMS Measurement Capabilities
Modern electrical systems increasingly feature non-sinusoidal waveforms that challenge basic multimeters. The 117’s True-RMS measurement provides accurate readings regardless of waveform shape, essential for diagnosing power quality issues and motor problems.
This capability proves invaluable when working with variable frequency drives, dimmer circuits, and other electronic loads that distort AC waveforms. Accurate True-RMS measurements enable proper load calculations and troubleshooting decisions.
Low-Impedance Mode Benefits
Ghost voltages from capacitive coupling can mislead troubleshooting efforts, causing electricians to treat de-energized circuits as live. The 117’s low-impedance mode eliminates these phantom readings by providing a low-impedance path that dissipates coupled voltages.
This feature particularly benefits electricians working in commercial and industrial environments where multiple circuits run in close proximity. The ability to distinguish real voltage from phantom readings improves diagnostic accuracy and reduces unnecessary downtime.
Head-to-Head Feature Comparison
Direct comparison reveals each model’s strengths and limitations, helping users understand which features align with their specific requirements and working conditions. If you’re also considering the higher-end Fluke 177 model, our detailed Fluke 117 vs 177 comparison explores the additional features and capabilities that justify the premium price point.
Measurement Accuracy Face-Off
The 117’s superior ±0.5% DC voltage accuracy provides measurable advantages in precision work. For critical measurements where every tenth of a volt matters, this improved accuracy can influence troubleshooting decisions and system commissioning.
However, the 17B+’s ±0.7% accuracy meets most standard electrical work requirements. The difference becomes significant primarily in low-voltage control systems, instrumentation work, or applications requiring high precision measurements.
Safety Features and Certifications
Both models meet CAT III 600V safety ratings, providing appropriate protection for most electrical work. The 117’s VoltAlert adds an extra safety layer by detecting voltage presence before contact, reducing shock risks during initial circuit assessment.
The low-impedance mode in the 117 enhances safety by eliminating misleading phantom voltage readings that could cause electricians to treat energized circuits as safe. This feature prevents dangerous assumptions during electrical work.
Display and User Interface
The 117 features a backlit display that improves readability in dimly lit electrical panels and confined spaces. This seemingly minor feature significantly impacts usability during real-world electrical work where lighting conditions vary widely.
Both models offer similar display resolution and readability under normal lighting. The 117’s backlight, however, provides a decisive advantage in industrial environments, basements, and other poorly lit work areas common in electrical troubleshooting.
Power and Battery Performance
Both multimeters utilize similar battery configurations with comparable operating life. The 117’s additional features slightly increase power consumption, but the difference remains negligible in practical use.
Auto-shutoff functionality in both models helps preserve battery life during intermittent use. Neither model offers rechargeable battery options, maintaining the simplicity preferred by field technicians.
Real-World Performance Testing
Field testing reveals how theoretical specifications translate into practical performance across various electrical applications and working conditions.
Field Test Results
Professional electricians consistently report the 117’s VoltAlert feature saves time during panel troubleshooting by quickly identifying energized circuits. The low-impedance mode proves particularly valuable in commercial buildings where phantom voltages frequently mislead diagnostics.
The 17B+ performs reliably in residential and light commercial applications. Its temperature measurement capability provides value in HVAC troubleshooting scenarios where integrated measurement tools reduce equipment requirements.
Professional User Reviews
Master electricians appreciate the 117’s specialized features for electrical work, citing improved safety and diagnostic efficiency. The True-RMS measurement capability proves essential when working with modern electronic loads and power quality issues.
Electronics technicians and hobbyists favor the 17B+ for its versatility and value. The temperature measurement function and standard multimeter capabilities meet most general-purpose measurement needs without unnecessary complexity or cost.
Long-Term Reliability
Both models demonstrate Fluke’s reputation for durability and long-term reliability. Users report years of dependable service with minimal maintenance requirements, justifying the initial investment through extended service life.
The 117’s additional complexity doesn’t appear to compromise reliability, with professional users reporting consistent performance even under demanding field conditions. Component quality and construction methods maintain Fluke’s standards across both models.
Which Multimeter Should You Choose?
Your decision ultimately depends on matching features to your specific needs, working environment, and budget considerations. Understanding these factors helps identify the model that provides optimal value for your applications.
Decision Framework
Choose the Fluke 117 if you:
- Work primarily as a professional electrician or electrical technician
- Need True-RMS measurement for modern electrical systems
- Value integrated non-contact voltage detection for safety
- Frequently encounter phantom voltage issues
- Work in dimly lit environments requiring backlit display
For those considering the 117 alongside other professional-grade options, our Fluke 116 vs 117 review provides insights into HVAC-specific features that might influence your decision.
Choose the Fluke 17B+ if you:
- Need temperature measurement capability for HVAC work
- Work primarily with basic electrical circuits and DC systems
- Require a reliable multimeter within budget constraints
- Perform electronics hobby work or educational activities
- Value versatility over specialized electrical features
Budget vs. Feature Analysis
The price difference between models reflects feature specialization rather than quality disparity. The 17B+ offers excellent value for general-purpose applications, while the 117’s premium features serve specific professional needs.
Consider the cost of separate tools required to match the 117’s integrated features. A quality non-contact voltage detector and True-RMS capability in separate instruments often exceed the 117’s price premium.
Final Recommendations
For professional electricians working primarily with AC systems, the Fluke 117 provides superior value through specialized features that improve safety and diagnostic efficiency. The True-RMS measurement and VoltAlert technology directly address common electrical troubleshooting challenges. If you’re interested in exploring how the 117 compares to the even more advanced Fluke 179, our Fluke 117 vs 179 comparison covers the additional automotive and frequency measurement capabilities.
Electronics enthusiasts, students, and technicians requiring temperature measurement will find the Fluke 17B+ offers exceptional versatility and value. Its feature combination serves diverse measurement needs without unnecessary complexity or cost.
Both models represent solid investments in reliable measurement tools. Your choice should align with your primary applications, working environment, and the specific features that enhance your productivity and safety. Consider your long-term needs and potential application changes when making this important tool investment.
For a broader perspective on Fluke’s multimeter lineup and how these models fit into the overall ecosystem, explore our comprehensive Fluke 117 vs Fluke multimeter series comparison, which provides context for understanding where each model excels in different professional scenarios.
Ready to make your decision? Compare current pricing and availability from authorized dealers to ensure you’re getting the best value for your chosen model. Don’t forget to factor in accessories like test leads and carrying cases that enhance your multimeter’s utility and protection.