Ground Fault Protection for Commercial Kitchens with PowerGuard
The commercial kitchen industry is undergoing a significant shift due to recent changes in the National Electrical Code (NEC). These changes have expanded the applications that require protection with Ground Fault Circuit Interrupters (GFCIs). GFCIs traditionally have been integrated into outlets and breakers, but these conventional solutions are proving too limited to cover the needs of many commercial kitchen environments.
Understanding GFCIs and Ground Faults
A ground fault occurs when electrical current escapes the insulated conductors, often due to damaged cords or faulty wiring, and flows through an uncontrolled path to ground. If that path includes a human being, the result can be a serious electrical shock. A Ground Fault Circuit Interrupter (GFCI) is an electrical device designed to protect against electrical shocks caused by ground faults by disconnecting the power (usually referred to as tripping) whenever a ground fault is detected.
In commercial kitchens, the risk of ground faults is particularly high due to the presence of personnel, water, conductive, and flammable materials around electrical appliances both while being operated and during routine cleaning.
The UL943 Standard for GFCIs
To fulfill the GFCI requirements put in place by the NEC, a GFCI needs to follow the UL943 standard. This standard covers the function, construction, performance, and markings of Class A GFCI devices. The standard requires compliance specific trip-times relative to the magnitude of the ground fault current to ensure personnel are safe from shock, as well as self test and end-of-life test requirements. To comply the device must detect and trip when measuring a current to ground of 6mA or higher.
Evolving NEC Code
The NEC has been progressively updating its requirements for ground fault protection in a variety of applications. NEC 210.8 (B) has required traditionally non-dwelling units to include GFCI protection for branch circuit receptacles in all kitchens, buffet serving areas for food preparation/beverage preparation, and where receptacles or appliances are installed within 6ft of a sink. This requirement was applicable to single phase circuits rated 150 volts or less to ground, 50 amperes or less. In an effort to improve Commercial Kitchen Electrical Safety, updates were made to the NEC code in 2017 and 2020 to expand this to also include 3-phase circuits (typically 208 volts) rated 100A or less.
Impact on the Commercial Kitchen Industry
These changes present a challenge for the commercial kitchen industry. High power and 3-phase appliances such as electric fryers and ovens are relatively common in commercial kitchens, and they were previously exempt from needing GFCI protection under older versions of NEC codes due to the impracticality of using GFCI breakers or receptacles with such equipment. While this transition may pose challenges, it is ultimately a step towards increased safety in commercial kitchens. The expanded use of GFCIs will further reduce the risk of electrical shocks, protecting employees and equipment.
Coming soon for commercial Kitchens: PowerGuard
To help commercial kitchens adapt to these changes, Bender has developed the Bender PowerGuard Class A Ground Fault Circuit Interrupter (GFCI). Designed to address the unique demands of commercial kitchens such as compatibility with 3-phase circuits, high current ratings, and conformity to the UL943 GFCI standards, this cutting-edge product line promises to revolutionize electrical safety in the food industry.
At Bender Inc., we’ve been at the forefront of electrical safety for over 75 years. Our commitment to innovation and excellence drives us to create solutions that exceed expectations. When it comes to protecting your commercial kitchen, trust the experts—trust Bender.
For more information about this application or to learn more about Bender technology related to your specific application, contact our team of experts.
This article is for informational purposes only. Bender provides the information "as is" without warranty and is not responsible for its accuracy or reliability. No warranties are given regarding its suitability for any specific circumstances.