Okay, let's break down NEC 240.24(B) and apply it to your situation.

NEC 240.24(B) - Occupancy

This section addresses the accessibility of overcurrent devices based on the occupancy. It essentially states that overcurrent devices (like circuit breakers or fuses) protecting circuits supplying a specific occupancy must be readily accessible to the occupants of that occupancy unless one of the following conditions applies: (1) Industrial Installations

For industrial installations where the conditions of maintenance and supervision ensure that only qualified persons will service the installed equipment, overcurrent devices that are vital to the system operation are allowed to be accessible only to qualified persons.

(2) Supervised Locations

Where electrical service is supplied and the building is under continuous building management supervision, the overcurrent protective devices for branch circuits supplying the building shall be permitted to be accessible only to authorized management personnel.

(3) Dwelling Units

In a dwelling unit, branch-circuit overcurrent devices shall be permitted to be located in a bathroom if readily accessible.

(4) Guest Rooms or Guest Suites

In guest rooms or guest suites of hotels, motels, and similar occupancies, the overcurrent devices are allowed to be located within the guest room or guest suite.

Analysis of Your Situation

Based on your description and the code section, here's a breakdown:1. Your Space (Red)

This is the occupancy in question. Presumably, it's not an industrial installation managed by qualified people and it is not a dwelling, guest room or guest suite.2.

Remote Electrical Room (Purple)

This is where the overcurrent devices (circuit breakers in the panels) are located. This room is not located in your space.

Does it comply with 240.24(B)?

Probably not. Here's why: Readily Accessible

For overcurrent protection to be considered "readily accessible" in the event of an electrical issue, it can be accessed and reset without obstructions, such as locked doors, equipment, or other obstacles. A remote electrical room, especially one that is physically separated from your space, may not be considered "readily accessible" to the occupants of your space, especially in an emergency.

Exceptions to Consider



Is this an industrial installation? If your space is part of a larger industrial facility where only qualified electrical personnel are permitted to service electrical equipment, then exception (1) might apply. In this case the panels could be locked in a remote electrical room. Is this a supervised building? If the building is under continuous management supervision and that management has staff who are authorized and trained to access and operate the overcurrent devices, then exception (2) might apply. In this case the panels could be locked in a remote electrical room.

Recommendations1. Clarify Occupancy Type

Determine the specific occupancy classification of your space based on your local building codes. This will affect how the code is interpreted.2.

Evaluate Accessibility

Consider the practical aspects of accessing the remote electrical room:

Distance

How far is it?

Obstacles

Are there locked doors, stairs, or other barriers?

Key Access

Who has keys? How quickly can they be obtained?

Emergency Situations

Can occupants quickly reset a tripped breaker in a blackout or other emergency?3.

Consult with an Electrical Engineer/Inspector

The best course of action is to discuss this with a qualified electrical engineer or your local electrical inspector. They can assess the specific layout, occupancy type, and local interpretations of the code to provide a definitive answer.

Potential Solutions (if deemed non-compliant)

If the remote electrical room is found to be non-compliant, here are some potential solutions to discuss with your engineer and inspector: Subpanel in Your Space

Install a subpanel within your space that is fed from the remote electrical room. This subpanel would contain the overcurrent devices for the circuits serving only your space.

Remote Operation

While less common, some advanced overcurrent protection devices can be remotely monitored and reset (with appropriate safeguards). This might be a viable option in certain situations, but it requires careful engineering and code compliance review.

Relocate the Panel

If feasible, relocate the panel(s) closer to or within your space.

In summary, the key issue is the readily accessible requirement. Because your electrical panels are located in a remote room, it likely violates NEC 240.24(B) unless certain exceptions apply. A professional assessment is strongly recommended to determine the best course of action. Flag for review