Okay, this is a classic situation with some historical baggage and differing interpretations of the NEC. Let's break down the situation and the NEC requirements

Understanding the Conflicting Information
Argument for a disconnect before the meter

The argument for a disconnect before the meter base usually revolves around safety for utility personnel. A disconnect allows them to de-energize the meter for maintenance or replacement without requiring the customer's equipment to be shut down. The idea of emergency personnel being able to cut off power without any delay.

Argument against a disconnect before the meter

The argument against a disconnect before the meter typically centers on who owns and controls that disconnect. If the customer owns the disconnect, the utility loses control over the service. There are also potential issues with tampering or unauthorized switching. There also can be an instance of what is considered a service disconnect when there should only be one. (One point of disconnect)

Utility Policy

Your friend's company guidebook saying "no disconnect unless required by the local jurisdiction" is key. This indicates their standard practice is to not require a disconnect ahead of the meter, but they'll defer to local requirements if they exist.

NEC Analysis (Relevant Sections and Interpretations)

The NEC's stance on disconnects before the meter is nuanced, and that's where the confusion stems from. The NEC generally focuses on the service disconnect, which is intended to disconnect the entire premises from the utility. Here's how the NEC applies: 230.70 General. Means shall be provided to disconnect all conductors in a building or other structure from the service-entrance conductors. This is the core requirement for a service disconnect. Note that this pertains to disconnecting the entire building, not just the meter. The service disconnect is typically located after the meter. 230.71 Maximum Number of Disconnects. (A) General. Each service shall have only one service disconnecting means unless the conditions of 230.71(B) apply. Exception: For installations meeting the requirements of 230.71(C), a separate service disconnect shall be permitted for each service-entrance conductor set. This section emphasizes that there should be a single point where the building can be disconnected from the service. Installing a disconnect before the meter could potentially be interpreted as violating this rule. (B) Multiple Disconnecting Means. (1) Buildings with Multiple Occupancies. (2) Occupancies with More than One Building or Other Structure Under Single Management. (3) Different Characteristics. (4) Remote Control Switching. Where qualified personnel monitor the switching equipment and prevent unauthorized access to the switching equipment, the location of the service disconnecting means shall be permitted to be remote from the building or structure served. These exceptions really don't cover a general requirement for a disconnect before the meter. 230.82 Equipment Connected to the Supply Side of Service Disconnect. Only the following equipment shall be permitted to be connected to the supply side of the service disconnecting means

(1) Meter installations, either indoors or outdoors

(2) Meter disconnect switches nominally rated not exceeding 600 volts that have a short-circuit current rating equal to or greater than the available fault current. A meter disconnect switch shall be lockable or sealable and shall be located at or near the meter. (3) Surge-protective devices. (4) Load management control devices. (5) Solar photovoltaic systems, fuel cell, microgrid systems, or energy storage systems equipment. (6) Suitable listed equipment or components of an emergency system, legally required standby system, or optional standby system. (7) Equipment or components used to support the utility’s distribution system, such as a communications link, reclosers, surge arresters, and control equipment. This section permits "meter disconnect switches", which are often used by utilities to de-energize a meter. However, this language doesn't require them. It permits it, and states certain conditions if they exist.

General Requirements for Disconnecting Means (Article 230 Part VIII) These sections dictate things like ratings, locations, etc. of the service disconnecting means (the main disconnect after the meter), but not a disconnect before it.

Analysis and Conclusion1.

The NEC does not explicitly require a disconnect ahead of the meter. There is nothing in the NEC that universally mandates a disconnect on the supply side of the meter for a 277/480V service.2.

The NEC does not explicitly prohibit a disconnect ahead of the meter in all cases, but it's generally discouraged.3.

The utility typically has the final say. Since the service drop/lateral and meter base are the utility's property, they have the right to specify what's allowed before the meter.4.

The local AHJ (Authority Having Jurisdiction) could have a requirement, but in Virginia, they cannot add to or take away from the NEC.

Therefore, the answer to your friend's question is



There is no NEC requirement for a disconnect before the meter base on a 277/480V service.

A disconnect before the meter is generally not installed, unless specifically required by the utility or the local jurisdiction (if that jurisdiction has a legally defensible basis for the requirement, and in this case, in Virginia, that cannot be).

The utility's policy ("no disconnect unless required by local jurisdiction") is likely driven by their desire to maintain control of the service and avoid conflicts with NEC requirements for service disconnects.

Practical Considerations for Your Friend

He should follow his company's guidelines first and foremost.

If a customer or contractor insists on a disconnect before the meter, he should consult with his superiors and the utility's legal department. They can determine if there's a valid reason for the exception and ensure it doesn't violate any regulations or utility policies.

He should document any deviations from standard practice thoroughly. This protects him and the utility if any issues arise later.

Communicate clearly with the customer/contractor. Explain the utility's policies and the reasons behind them.

In short, the lack of a disconnect ahead of the meter is the norm, and the utility's policy seems perfectly reasonable and in line with the NEC.* Flag for review