By Matthew Storz, Fire Safety Specialist
More! More! More! Weill Cornell Medicine employees are always looking for more time, more space, and, as we all continue to expand, more electronic capability. However, gaining more electronic capability may be the most challenging as it entails unique limits, and pushing those limits can lead to disaster.
Safety must be a top priority in a research-based institution where sensitive equipment and a high volume of electronic devices are used. A frequently overlooked but critical aspect of overall safety is how we use extension cords and power strips. While these tools offer convenience, improper use can lead to serious hazards, most commonly caused by overloading and daisy-chaining power cords.
Overloading happens when the electrical demand exceeds the safe capacity of an extension cord or power strip. Each power strip and extension cord are rated for a specific amperage. (Amperage is the amount of electrical current it can handle safely.)
In medical and research environments, particularly in older established facilities, we often have too many plugs and not enough outlets for all our high-powered equipment such as microscopes, centrifuges, and computers. Plugging multiple devices into a single power strip or extension cord can easily exceed its capacity, leading to overheating and the potential for electrical fires.
Our homes may not have the same workplace equipment, but we often use power strips when setting up our entertainment centers with our TVs, game systems, computers, and microwaves. This may require more outlets than are available, and the risk of straining our home circuits could lead to an electrical fire.
Daisy chaining refers to connecting multiple power strips or extension cords together in a series. For example, you might plug one power strip into an extension cord, and then plug another power strip into the first power strip, and so on. This configuration increases the risk of overload, whereas each power strip and extension cord has a maximum load capacity. When daisy-chained, the risk of exceeding these limits is compounded. The more connections in the chain, the higher the potential for failure. Overloading in a daisy chain setup can lead to overheating, electrical fires, and damage to connected equipment.
To minimize the risk of creating an electrical hazard, adhere to the following best practices:
Know Your Ratings: Always check the amperage rating of your extension cords and power strip. Use only a single UL-listed power strip or extension cord that can handle the combined load of your equipment.
Avoid Daisy Chaining: Never plug one power strip into another or extend an extension cord.
Use Quality Equipment: Invest in high-quality, UL-listed power strips and extension cords that meet safety standards. These products have been tested for reliability and safety, offering better protection against electrical hazards.
Inspect Regularly: Conduct regular inspections of your power strips and extension cords for any signs of wear and tear, such as fraying, cracking, or exposed wires. Replace any damaged equipment immediately.
Proper Placement: Position cords and power strips in a manner that prevents damage. Avoid placing them under rugs, carpets, or heavy furniture, and ensure they are not pinched or bent.
Unplug When Not in Use: For temporary setups, unplug power strips and extension cords when they are not in use to reduce the risk of overheating and other hazards.
Proper use of extension cords and power strips is crucial to preventing potential hazards and maintaining the integrity of your important work. Prioritize electrical safety to protect your equipment, data, and, most importantly, yourselves.
References:
Weill Cornell Medicine EHS Bulletin Power Strip Safety