Which room is prohibited from having a PV DC disconnect?

The reason the bathroom is prohibited from having a PV DC disconnect is primarily related to safety considerations. Bathrooms are considered high-humidity areas where the likelihood of moisture and water presence increases significantly. The National Electrical Code (NEC) contains specific guidelines to mitigate risks in wet or damp locations, as moisture poses a greater risk of electrical shock and can lead to equipment failure or electrical hazards.

By restricting the installation of PV DC disconnects in bathrooms, the code aims to minimize the potential for moisture-related issues that could affect the operation of the disconnect and the overall safety of the electrical system. Areas like kitchens, attics, and bedrooms do not have the same level of moisture exposure as bathrooms, making them more suitable for the installation of such electrical equipment.