Final answer:
Outdoor receptacles may be exempt from GFCI protection if they are not readily accessible and used for dedicated equipment, or if they're at an industrial site with qualified personnel and safety measures in place.
Step-by-step explanation:
There are two specific cases where outdoor receptacles might be exempt from GFCI (Ground Fault Circuit Interrupter) protection:
- When an outdoor receptacle is not readily accessible and is used for a dedicated purpose, such as for a fixed air conditioning unit, it might be exempt from GFCI protection requirements.
- Another exemption occurs if the outdoor receptacles are on an industrial site where maintenance and supervision ensure that only qualified personnel are using the equipment, and that appropriate safety measures are in place.
Typically, GFCIs are essential for preventing shock by detecting a loss of current on unintended paths. They are designed to protect equipment and people by responding quickly to changes in the current, much faster than traditional circuit breakers.