Okay, let's break down this scenario and address the compliance with NEC 695.3(A)(1).

Understanding NEC 695.3(A)(1)

NEC 695.3(A)(1) is a critical section addressing the power source(s) for a fire pump. It essentially states that the fire pump power source must be: Independent of the Normal Power Source

The intent is to ensure the fire pump can operate even if the normal power source fails due to a fire or other emergency.

Sufficient Capacity

The power source must have the capacity to carry the fire pump's full load, plus any associated emergency loads.

Reliability

The power source should be as reliable as possible.Specifically, 695.3(A)(1) describes that the pump must be supplied from a source such as a service, where the supply conductors are located "outside the building" or separated from the "interior of the building" to protect them from fire.

Analyzing Your Scenario

Here's a breakdown of your situation and how it relates to 695.3(A)(1):1. 3000 Amp Service

You have a substantial service for the commercial building.2.

Fire Pump Feeder Path



CT Cabinet

The fire pump feeder originates at a CT (Current Transformer) cabinet. Crucially, CT cabinets are typically located before the main service disconnect.



Service Entrance Conductor Portion of Switchgear

The fire pump feeder then enters the service entrance conductor section of the main switchgear. This is the key area of concern.

Continuous Run

The feeder runs continuously through a conduit to the fire pump room.3.

Main Breaker/Service Disconnect

The main breaker is located in a different vertical section of the switchgear.

Compliance AssessmentBased on your description, the compliance with 695.3(A)(1) is

likely NOT compliant for the following reasons:

Service Entrance Conductors are Still Inside the Building and Not Protected. The NEC requires the fire pump feeder to be connected either to a source located outside the building or, when it is connected inside the building, to be separated in such a way that a fire is less likely to damage the pump feed. Because the fire pump feeders are located in the same service as the building's normal power and there is no separation between the building feeders and the pump feeder, this install will likely not be compliant.

Potential for Fault Propagation

A fault or fire within the main service disconnect section could potentially affect the service entrance conductors supplying the fire pump, even though the breaker is in a different section. The code aims to isolate the fire pump power as much as possible.

To achieve compliance, here are a few options



Tap Ahead of the Service Disconnect (Preferred)

This is generally the preferred and most code-compliant method. The fire pump feeder should originate directly from the utility side of the service entrance, before the main service disconnect. This could involve a separate fused disconnect switch dedicated to the fire pump. The goal is to have the fire pump supply completely independent and protected from faults or fires within the building's main service equipment.

Separated Feeder Within the Building

If tapping ahead of the service disconnect isn't feasible due to design or space constraints, consider:

230.6

If the fire pump feeder conductors are installed encased in 2" of concrete or brick, they may be considered outside the building.

230.70(A)(1)

This article allows the service disconnect to be installed at a "readily accessible location" inside the building, nearest the point of entrance of the service conductors. It is recommended to verify that the electrical inspector is comfortable that the installation meets this definition of "nearest the point of entrance".

Dedicated Raceways with Fire Protection

Run the fire pump feeder in a dedicated raceway (e.g., rigid metal conduit) with a fire-resistant rating, physically separated from other building wiring, and enclosed in a minimum 2-hour fire-rated assembly.

Alternative Power Source

A generator could be used.

Important Considerations



Local AHJ (Authority Having Jurisdiction)

Always consult with your local electrical inspector (AHJ). They have the final say on code interpretations and can provide specific guidance for your location.

Engineering Review

For such a critical system, a professional electrical engineer should review the design and ensure compliance with all applicable codes and standards. They can provide the best solutions tailored to your specific building and electrical system.

Coordination Study

A coordination study is essential to ensure proper selective coordination between the fire pump overcurrent protective devices and the upstream utility devices. This is critical for reliable fire pump operation.

In summary, your current setup likely does not meet the intent of NEC 695.3(A)(1) for fire pump power source independence. Tapping ahead of the main service disconnect, providing significant physical separation with fire protection, or using an alternative power source are the recommended paths to compliance. Flag for review