--- title: InfoPower Blog | electrical safety description: electrical safety | The InfoPower blogs are created to assist you in designing, building, and maintaining products for worldwide markets by providing you with information on topics that are relevant to power system components. --- [![Interpower Facebook](https://blog.interpower.com/hubfs/Interpower_March2018/Images/facebook-button-black.png "Interpower Facebook")](https://www.facebook.com/interpowercorporation) [![Interpower LinkedIn](https://blog.interpower.com/hubfs/Interpower_March2018/Images/linkedin-button-black.png "Interpower LinkedIn")](https://www.linkedin.com/company/interpower-corporation) [![Interpower Twitter](https://blog.interpower.com/hubfs/Interpower_March2018/Images/twitter-button-black.png "Interpower Twitter")](https://twitter.com/interpowergroup) **PHONE:U.S.** [(641) 673-5000 |](tel:6416735000) **Toll Free:** [(800) 662-2290 |](tel:8006622290) **UK** [+44 (0)1908 295300 |](tel:+4401908295300) **Freephone:**[00800 5566 5566](tel:0080055665566) [![Interpower](https://blog.interpower.com/hubfs/Interpower_March2018/Images/IC-white-site-heading.png "Interpower") ![Interpower](https://blog.interpower.com/hubfs/Interpower_March2018/Images/mobile-logo.png "Interpower")](http://interpower.com) - 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[Conforming to Local Safety Requirements](http://www.interpower.com/ic/designers/designing-for-export/Conforming-to-Local-Safety-Requirements.html) - [What standards must electronic or electrical equipment meet?](http://www.interpower.com/ic/designers/designing-for-export/What-Standards-Must-Electronic-or-Electrical-Equipment-Meet.html) - [European & International Standards Writing Agencies](http://www.interpower.com/ic/designers/designing-for-export/european-international-standards-writing-agencies.html) - [What is the CE Marking?](http://www.interpower.com/ic/designers/designing-for-export/What-is-the-CE-Marking.html) - [What is the ENEC Mark?](http://www.interpower.com/ic/designers/designing-for-export/What-is-the-ENEC-Mark.html) - [Who enforces international safety standards?](http://www.interpower.com/ic/designers/designing-for-export/who-enforces-international-safety-standards.html) - [International Safety Compliance is a Corporate-wide Effort](http://www.interpower.com/ic/designers/designing-for-export/international-safety-compliance-is-a-corporate-wide-effort.html) - 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[Crimp Cross Section and Pull Test](http://www.interpower.com/ic/designers/QualityTopics/Crimp-Cross-Section-and-Pull-Test.html) - [Insertion-withdrawal Testing](http://www.interpower.com/ic/designers/QualityTopics/InsertionWithdrawal-Testing.html) - [Temperature Rise Testing](http://www.interpower.com/ic/designers/QualityTopics/Temperature-Rise-Testing.html) - [Vertical Flame Test](http://www.interpower.com/ic/designers/QualityTopics/Vertical-Flame-Test.html) - [In-depth Product Line Information](http://www.interpower.com/ic/designers/Indepth-Product-Line-Information.html) - [Power Cords and Cord Sets](http://www.interpower.com/ic/designers/in-depth-product-line-information/more-information-on-power-cords-and-cord-sets.html) - [Hospital-Grade Products](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-info-on-HospitalGrade-Products.html) - [Heat Shrink Tubing](http://www.interpower.com/ic/designers/in-depth-product-line-information/more-information-on-heat-shrink-tubing.html) - [Plugs and Sockets](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-info-on-Plugs-and-Sockets.html) - [High Power Pin & Sleeve Devices](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-High-Power-Pin-and-Sleeve-Devices.html) - [Connector Locks](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-information-on-Connector-Locks.html) - [Cable](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Cable.html) - [Odd Sizes in AWG Flexible Cable](http://www.interpower.com/ic/designers/in-depth-product-line-information/odd-sizes-in-AWG-flexible-cable.html) - [Strain Reliefs](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Strain-Reliefs-Cable-Glands.html) - [Terminal Blocks](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Terminal-Blocks.html) - [Testing](http://www.interpower.com/ic/designers/in-depth-product-line-information/more-information-on-testing.html) - 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[Why observe international product safety requirements?](http://www.interpower.com/ic/designers/designing-for-export/Why-Observe-International-Product-Safety-Requirements.html) - [Conforming to Local Safety Requirements](http://www.interpower.com/ic/designers/designing-for-export/Conforming-to-Local-Safety-Requirements.html) - [What standards must electronic or electrical equipment meet?](http://www.interpower.com/ic/designers/designing-for-export/What-Standards-Must-Electronic-or-Electrical-Equipment-Meet.html) - [European & International Standards Writing Agencies](http://www.interpower.com/ic/designers/designing-for-export/european-international-standards-writing-agencies.html) - [What is the CE Marking?](http://www.interpower.com/ic/designers/designing-for-export/What-is-the-CE-Marking.html) - [What is the ENEC Mark?](http://www.interpower.com/ic/designers/designing-for-export/What-is-the-ENEC-Mark.html) - [Who enforces international safety standards?](http://www.interpower.com/ic/designers/designing-for-export/who-enforces-international-safety-standards.html) - [International Safety Compliance is a Corporate-wide Effort](http://www.interpower.com/ic/designers/designing-for-export/international-safety-compliance-is-a-corporate-wide-effort.html) - [Webcasts](http://www.interpower.com/ic/designers/Webcasts.html) - [IEC 60320 Overview](http://www.interpower.com/ic/designers/webcasts/iec60320-overview.html) - [How Interpower Delights Customers...FAST](http://www.interpower.com/ic/designers/webcasts/how-interpower-delights-customers-fast.html) - [International Power Found in the Heartland](http://www.interpower.com/ic/designers/webcasts/interpower-on-ien-now-international-power-in-the-heartland.html) - [Interpower Talks Unique Device Identification System](http://www.interpower.com/ic/designers/webcasts/interpower-talks-unique-device-identification-system.html) - [How to Select Power Cords and Cord Sets](http://www.interpower.com/ic/designers/webcasts/how-to-select-power-cords-and-cord-sets.html) - [Interpower International Power Cable Explained](http://www.interpower.com/ic/designers/webcasts/interpower-international-power-cable-explained.html) - [Commonly Asked Questions](http://www.interpower.com/ic/designers/webcasts/commonly-asked-questions.html) - [International Power Source Benefits](http://www.interpower.com/ic/designers/webcasts/International-Power-Source-Benefits.html) - [Selecting the Correct Cable for Worldwide Markets](http://www.interpower.com/ic/designers/webcasts/selecting-the-correct-cable.html) - [Accessory Power](http://www.interpower.com/ic/designers/webcasts/accessory-power-for-worldwide-markets.html) - [Quality Topics](http://www.interpower.com/ic/designers/Quality-Topics.html) - [60320 Withdrawal Force](http://www.interpower.com/ic/designers/QualityTopics/60320-Withdrawal-Force.html) - [Abrupt Pull Test](http://www.interpower.com/ic/designers/QualityTopics/Abrupt-Pull-Test.html) - [Hospital-Grade Power Cord](http://www.interpower.com/ic/designers/QualityTopics/HospitalGrade-Powercord.html) - [Cord Flex Tester](http://www.interpower.com/ic/designers/QualityTopics/Cord-Flex-Tester.html) - [Cord Anchorage Pull Test](http://www.interpower.com/ic/designers/QualityTopics/Cord-Anchorage-Pull-Test.html) - [Cord Anchorage Torque Twist Test](http://www.interpower.com/ic/designers/QualityTopics/Cord-Anchorage-Torque-Twist-Test-Video.html) - [Crimp Cross Section and Pull Test](http://www.interpower.com/ic/designers/QualityTopics/Crimp-Cross-Section-and-Pull-Test.html) - [Insertion-withdrawal Testing](http://www.interpower.com/ic/designers/QualityTopics/InsertionWithdrawal-Testing.html) - [Temperature Rise Testing](http://www.interpower.com/ic/designers/QualityTopics/Temperature-Rise-Testing.html) - [Vertical Flame Test](http://www.interpower.com/ic/designers/QualityTopics/Vertical-Flame-Test.html) - [In-depth Product Line Information](http://www.interpower.com/ic/designers/Indepth-Product-Line-Information.html) - [Power Cords and Cord Sets](http://www.interpower.com/ic/designers/in-depth-product-line-information/more-information-on-power-cords-and-cord-sets.html) - [Hospital-Grade Products](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-info-on-HospitalGrade-Products.html) - [Heat Shrink Tubing](http://www.interpower.com/ic/designers/in-depth-product-line-information/more-information-on-heat-shrink-tubing.html) - [Plugs and Sockets](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-info-on-Plugs-and-Sockets.html) - [High Power Pin & Sleeve Devices](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-High-Power-Pin-and-Sleeve-Devices.html) - [Connector Locks](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-information-on-Connector-Locks.html) - [Cable](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Cable.html) - [Odd Sizes in AWG Flexible Cable](http://www.interpower.com/ic/designers/in-depth-product-line-information/odd-sizes-in-AWG-flexible-cable.html) - [Strain Reliefs](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Strain-Reliefs-Cable-Glands.html) - [Terminal Blocks](http://www.interpower.com/ic/designers/in-depth-product-line-information/More-Information-on-Terminal-Blocks.html) - 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When cable length is 50 feet or longer, voltage drop in cable occurs—the resistance in the copper measured per foot—causing heat buildup. [Read More](https://blog.interpower.com/infopower/calculating-voltage-drop) 0 Comments [Click here to read/write comments](https://blog.interpower.com/infopower/calculating-voltage-drop#comments-listing) Topics: [electrical safety](https://blog.interpower.com/infopower/tag/electrical-safety), [voltage drop](https://blog.interpower.com/infopower/tag/voltage-drop), [product design](https://blog.interpower.com/infopower/tag/product-design), [designing for export](https://blog.interpower.com/infopower/tag/designing-for-export), [power cord](https://blog.interpower.com/infopower/tag/power-cord) ## [Interpower’s Plug and Socket Tester](https://blog.interpower.com/infopower/interpowers-plug-and-socket-tester) Posted on 12/23/24, 12:42 PM [![This image shows Ron Barnet, Product Development Specialist, operating an ED&D Plug and Socket Tester Model F56.61, a specialized piece of testing equipment. Ron is wearing a formal light-blue shirt and safety glasses, focused on the task. The machine, designed for plug and socket testing, has several wires, switches, and connectors visible, showing it's being used for electrical testing and quality assurance purposes. The environment is Interpower's testing or lab, and there is another device of similar branding visible on the right. The workspace is organized, with a clean bench and a book or manual nearby. The presence of a safety screen (transparent cover) on the equipment highlights a focus on safety while testing electrical components.](https://blog.interpower.com/hubfs/Interpower_November2017/images/InfoPower%20Blog/plug-and-socket-testing-img-700x367.jpg)](https://blog.interpower.com/infopower/interpowers-plug-and-socket-tester) Deep inside the bunker of Interpower’s testing facility in Ames, Iowa, (Area 51²?) is an array of testing apparatus for the testing of electrical cable and components to push both newly manufactured and warehoused cable, cords, and components (and cutting-edge prototypes) to extreme limits, often well beyond UL and IEC standards for product compliance. For much of his 20 years, Ron Barnett, Interpower’s Product Development Manager, has procured specialized testing equipment to ensure Interpower’s power cords, cords sets, and components exceed all testing criteria standardized by worldwide agencies such as UL and VDE while personally conducting thousands of tests. [Read More](https://blog.interpower.com/infopower/interpowers-plug-and-socket-tester) 0 Comments [Click here to read/write comments](https://blog.interpower.com/infopower/interpowers-plug-and-socket-tester#comments-listing) Topics: [electrical safety](https://blog.interpower.com/infopower/tag/electrical-safety), [testing](https://blog.interpower.com/infopower/tag/testing), [designing for export](https://blog.interpower.com/infopower/tag/designing-for-export), [plugs & sockets](https://blog.interpower.com/infopower/tag/plugs-sockets), [product development](https://blog.interpower.com/infopower/tag/product-development) ## [Electrical Arcing and Tracking? Not if You Can Prevent It.](https://blog.interpower.com/infopower/electrical-arcing-and-tracking-not-if-you-can-prevent-it) Posted on 8/20/24, 9:54 AM [![image of blue, glowing, electrical arching lines across a black background](https://blog.interpower.com/hubfs/Interpower_November2017/images/InfoPower%20Blog/electrical-arching-082024-700x367.jpg)](https://blog.interpower.com/infopower/electrical-arcing-and-tracking-not-if-you-can-prevent-it) When searching for cord-locking mechanisms to prevent accidental or abrupt disconnects from IEC 60320 power inlets such as the IEC 60320 C13, beware of the type of metal locking mechanisms (one unfortunately approved by a well-known agency) that tightly clamp onto notched grounding blades, a tight metal-on-metal retention resulting in a dangerous loss of material on the grounding blade. This friction, similar to striking a flint to produce sparks, creates carbonized buildup around the terminal after repeated disconnects, which could lead to an electrical fire through repeated arcing. Carbonized buildup may also appear on alloy pins if those pins are molded a fraction too close together, the narrow space between them providing small enough air gaps for the current to jump from one pin to the next. This would also apply to metal screws on the plug face of rewirable cord sets. [Read More](https://blog.interpower.com/infopower/electrical-arcing-and-tracking-not-if-you-can-prevent-it) 0 Comments [Click here to read/write comments](https://blog.interpower.com/infopower/electrical-arcing-and-tracking-not-if-you-can-prevent-it#comments-listing) Topics: [electrical safety](https://blog.interpower.com/infopower/tag/electrical-safety), [IEC 60320](https://blog.interpower.com/infopower/tag/iec-60320), [connector locks](https://blog.interpower.com/infopower/tag/connector-locks) ## [North American 5-15, 5-20, 6-15, & 6-20, and Japanese JIS 8303 Hospital-Grade Cords](https://blog.interpower.com/infopower/north-american-5-15-5-20-6-15-6-20-and-japanese-jis-8303-hospital-grade-cords) Posted on 6/26/23, 4:18 PM [![Aorth American hospital-grade cord and Japanese hospital-grade cord with cord clips](https://blog.interpower.com/hubfs/Interpower_November2017/images/InfoPower%20Blog/na-jap-cord-clip-hg3_700x367.jpg)](https://blog.interpower.com/infopower/north-american-5-15-5-20-6-15-6-20-and-japanese-jis-8303-hospital-grade-cords) Safe & Reliable Is Now Safer with Cord Clips. For over a century, AC power has played a vital role in the welfare of patients and staff in hospitals and clinics worldwide. Hospital-grade electrical cords are designed to provide the correct amperages and voltages for a broad range of medical equipment—portable CT Scanners and X-ray machines to heart monitors, ECMO machines, and hospital-grade treadmills. Hospital-grade certified by a “green dot,” Interpower North American (NEMA) 5-15, 5-20, 6-15, and 6-20 hospital-grade molded and hand-wired cords and cord sets provide consistent electrical continuity on the inside while offering rugged durability on the outside. The green dot is also found on the Japanese JIS 8303 plug, which meets JIS T 1021 hospital-grade standards. [Read More](https://blog.interpower.com/infopower/north-american-5-15-5-20-6-15-6-20-and-japanese-jis-8303-hospital-grade-cords) 0 Comments [Click here to read/write comments](https://blog.interpower.com/infopower/north-american-5-15-5-20-6-15-6-20-and-japanese-jis-8303-hospital-grade-cords#comments-listing) Topics: [electrical safety](https://blog.interpower.com/infopower/tag/electrical-safety), [Hospital-Grade Products](https://blog.interpower.com/infopower/tag/hospital-grade-products), [North American Hospital-Grade Cords](https://blog.interpower.com/infopower/tag/north-american-hospital-grade-cords), [cord clips](https://blog.interpower.com/infopower/tag/cord-clips), [Japanese Hospital-Grade Cords](https://blog.interpower.com/infopower/tag/japanese-hospital-grade-cords) ## [Not All Cord-locking Mechanisms Are Created Equal](https://blog.interpower.com/infopower/not-all-cord-locking-mechanisms-are-created-equal) Posted on 6/13/22, 4:15 PM [![](https://blog.interpower.com/hubfs/Interpower_November2017/images/InfoPower%20Blog/cnlk-blue-700x367.jpg)](https://blog.interpower.com/infopower/not-all-cord-locking-mechanisms-are-created-equal) Easy-to-disconnect connector locks and other cord-locking mechanisms are convenient tools for anchoring cords to inlets to prevent abrupt disconnects, but not all manufactured versions are created equal. Avoid easy-to-disconnect locking mechanisms which gouge or shave away the ground blade of the inlet during abrupt disconnects or improper usage and removal. [Read More](https://blog.interpower.com/infopower/not-all-cord-locking-mechanisms-are-created-equal) 2 Comments [Click here to read/write comments](https://blog.interpower.com/infopower/not-all-cord-locking-mechanisms-are-created-equal#comments-listing) Topics: [electrical safety](https://blog.interpower.com/infopower/tag/electrical-safety), [power cord](https://blog.interpower.com/infopower/tag/power-cord), [connector locks](https://blog.interpower.com/infopower/tag/connector-locks), [connectors](https://blog.interpower.com/infopower/tag/connectors) [All posts](https://blog.interpower.com/infopower/all) [Next](https://blog.interpower.com/infopower/tag/electrical-safety/page/2) ## Stay In-The-Know with *InfoPower* The monthly *InfoPower* blogs are created to assist you in designing, building, and maintaining products for worldwide markets by providing you with information on topics relevant to power system components. ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - 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