You're right to question this placement. NEC 690.13(A) does require the PV disconnect to be readily accessible. However, readily accessible is defined in Article 100 as:> Accessible, Readily (Readily Accessible). Capable of being reached quickly for operation, renewal, or inspections without requiring those to whom ready access is requisite to climb over or remove obstacles or to resort to portable ladders, and so forth.The critical phrase here is "those to whom ready access is requisite." This phrase heavily influences how "readily accessible" is interpreted in NEC 690.13(A).Here's a breakdown of why an electrical room might not be considered readily accessible and what you need to consider

Why an Electrical Room Might NOT Be Readily Accessible:
Locked Door

If the electrical room is locked, and access requires a key or special code, it's generally

NOT considered readily accessible to unqualified persons. Restricted Access

If the electrical room has other restrictions like requiring permission, check-in procedures, or is generally discouraged for non-electrical personnel to enter, it's likely

NOT readily accessible. Obstacles

While the definition explicitly mentions climbing over obstacles and using ladders, other obstructions like equipment blocking access to the disconnect, narrow walkways, etc., could be problematic.

Safety Concerns

If the electrical room presents significant hazards to unqualified persons (exposed live equipment, high voltage warnings, etc.), even if technically accessible, it might be argued it's not "readily" accessible for the purpose of emergency disconnect.

What Makes an Electrical Room Acceptable (Potentially)



Unrestricted Access

The electrical room is unlocked during business hours, or has a means for emergency personnel to access it at any time.

Clear Signage

Very clear and visible signage is required, inside and outside the room, indicating the location of the PV disconnect and instructions for use in an emergency. The instructions must be simple and understandable for someone with no electrical knowledge.

No Hazards

The electrical room doesn't present undue hazards to a reasonably cautious person.

Dedicated Path

There is a clear and unobstructed path to the disconnect.

Considerations for Emergency Situations

The primary reason for the "readily accessible" requirement is safety in emergency situations (fire, electrical shock, etc.). Think about:

First Responders

Can firefighters or other emergency personnel quickly locate and operate the disconnect? They may not have keys or codes.

Building Occupants

Can building occupants (if trained and authorized) easily disconnect the PV system in an emergency?

What You Should Do


Consult with the Authority Having Jurisdiction (AHJ)

This is the most important step. The AHJ (typically the local electrical inspector) has the final say on whether your installation meets code. Explain your reasoning for the location of the PV disconnect, and ask for their interpretation of "readily accessible" in your specific context. Get their feedback before making any changes.2.

Document Your Reasoning

Keep a record of why you chose the electrical room location. Document any safety measures you've taken (signage, etc.). This documentation will be helpful during inspection and in case of future questions.3.

Alternative Solutions

If the AHJ doesn't approve the electrical room location, be prepared to discuss alternative solutions:

Relocate the Disconnect

This might be the simplest solution. Consider an outdoor location near the point of entry to the building, or a more accessible interior location.

Remote Operation

Some advanced PV disconnects can be remotely operated (e.g., from a fire alarm panel). This could be a solution if physical access is a major constraint.

Keyed Box

A compromise solution might be to place the disconnect in a locked, weatherproof enclosure outside the electrical room, with a readily accessible key box nearby (similar to fire department lock boxes). However, this needs explicit approval from the AHJ. Proper labeling is critical.

In summary, the location of your PV disconnect in an electrical room depends on how readily accessible the electrical room is to unqualified persons and emergency responders*. Consult with your AHJ to ensure your installation meets code and safety requirements. Flag for review