What is the NEC requirement for every electrical panel in a dwelling?

Every electrical panel in a dwelling is required to be accessible and not obstructed to ensure safe and efficient operation. Accessibility is crucial for a variety of reasons, including the ability for homeowners and electricians to quickly shut off power during an emergency, perform maintenance, or diagnose issues. The NEC emphasizes that any equipment used for electrical distribution should allow for safe access, which means that it cannot be locked or placed in such a way that hinders access, such as behind furniture or in locked areas.

While it may be permissible to place some panels in basements or outdoors depending on specific conditions and local amendments to the NEC, the key requirement is accessibility. The requirements for placement and potential locking mechanisms are less critical compared to ensuring that anyone who needs to work on or use the panel can do so safely and without barriers. Thus, the focus on unobstructed access is paramount in promoting safety in electrical installations within dwellings.