![]() The GFCI outlet works to detect variance with the electricity as it travels through the outlet. ![]() You don’t need to know every term to understand and learn crucial details. Not everybody is a qualified electrician, and all the technical vocabulary can be confusing. How Does a GFCI Outlet Work?Ī GFCI outlet improves the overall safety of your home. That is why it is essential to be adequately informed and understand how they work, recognize them, and expect them. They provide high levels of protection and safety for us and our homes. Once there, click on their link to free access to the 2020 NEC ® edition of NFPA 70.The accidents have dramatically decreased since the introduction and the consequent increase in GFCI outlets usage. See the actual NEC ® text at NFPA.ORG for the complete code section. This exception shall expire September 1, 2026”.Įxception 2 allows listed HVAC equipment to go without GFCI protection until September 1, 2026, which should give the HVAC industry time to ensure that listed HVAC systems can function properly when supplied by outlets equipped with GFCI protection.īelow is a preview of the NEC ®. 2: Ground-fault circuit-interrupter protection shall not be required for listed HVAC equipment. On August 12, 2022, Tentative Interim Amendment (TIA) 1653 was issued for the 2020 NEC ® which provides the following language in new Exception 2: Many states and jurisdictions have amended the code section and deleted the language. The child was fatally electrocuted when he made contact simultaneously with both the condenser and the metal fence.Ģ022 UPDATE: Ever since this section first appeared in 2020, there have been many reports of issues with outdoor air conditioners, employing power conversion equipment, not working properly when supplied from the load side of a GFCI device. The condenser had an electrical ground fault which caused the unit's metal housing to become electrified. On August 3, 2007, a 12-year-old child jumped over a chain link fence and landed on the adjacent AC condenser unit. This code change came as a result of a child’s death. If this air conditioner is rated 50 amps or less, then GFCI protection is now required for the “outlet”. ![]() This is a big change!Įxample: A 240V, single phase, outdoor, dwelling unit air conditioner has two ungrounded conductors that are each 120V to ground and 240V phase to phase. In the 2020 NEC ®, all outdoor “ outlets” for dwellings, other than lighting, electric snow-melting, deicing, or pipeline heating, that are supplied by single-phase branch circuits rated 150 volts to ground or less, 50 amperes or less, shall have ground-fault circuit-interrupter protection for personnel. A receptacle is one kind of outlet, but so is a hard-wired connection such as a smoke detector, or a surface mounted luminaire, or even the point on an outdoor air conditioner system where the circuit connects to the disconnecting means supplying the AC unit. Many people make the mistake of thinking that only receptacles can be “outlets”. ![]() GFCI protection is now required for outdoor “outlets” at dwellings.Īn “ Outlet”, according to the NEC ® Article 100 definition, is a point on the wiring system at which current is taken to supply utilization equipment. ![]()
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