Okay, let's break down NEC 517.19(C) and your situation. You're dealing with a critical point in healthcare electrical safety.

Understanding NEC 517.19(C) (based on the 2017 NEC)

This section of the National Electrical Code (NEC) specifically addresses receptacles in critical care areas like operating rooms. Here's a summary of what it says: Minimum Receptacle Quantity

Operating rooms must have a minimum of 36 receptacles.

Two Branch Circuits Required

These receptacles must be supplied by a minimum of two branch circuits. This is where the key to your question lies.

Emergency Power Source

At least one of the branch circuits supplying the receptacles must be from the emergency system.

Different Branch Circuits

The branch circuits supplying the receptacles must be different branch circuits,

Alternative Source of Power

The general idea is to guarantee continuity of power by having at least two independent power sources.

Interpreting "Not From Same Location"

The requirement that the branch circuits must be from different locations means that the two required circuits should come from different branch circuits and ideally, from different electrical panels or distribution points within your electrical system. This prevents a single point of failure (like a breaker tripping in one panel) from knocking out power to all the receptacles in the operating room.

Do you need "Normal" power in addition to Emergency Power? No NEC requirement. The NEC requires at least one emergency power source branch circuit. It doesn't explicitly require a "normal" (non-emergency) branch circuit to supply the receptacles. However the NEC requires a minimum of two branch circuits meaning that a normal power source will need to be implemented.

In Summary1. Minimum Requirements

You need a minimum of two branch circuits to supply the receptacles.2.

Emergency Power is Mandatory

At least one of those circuits MUST be connected to the emergency power system.3.

Diversity is the Key

The point of having at least two branch circuits is to protect critical equipment in the event of a general power outage.4.

Different Locations

The branch circuits for the receptacle must come from different branch circuits

Why Your Electricians Might Disagree & What to Do

Electricians might disagree for a few reasons: Misinterpretation

The NEC can be tricky, and even experienced electricians can sometimes interpret it differently.

Local Codes

Always check with the local code enforcing authority to confirm interpretations and ensure compliance with local amendments to the NEC.

Cost

Separating power sources into different panels and running separate circuits can be more expensive than running everything from the same panel.

Confusion

It's possible there's some confusion in terminology or a misunderstanding of the emergency power system setup at your facility.

Recommended Actions1. Review Documentation

Carefully review the existing electrical drawings, panel schedules, and emergency power system diagrams for the operating rooms in question.2.

Consult with a Qualified Electrical Engineer

The best* course of action is to consult with a qualified electrical engineer who specializes in healthcare facilities. They can accurately interpret the code, assess your current system, and recommend the most appropriate and compliant solution.3.

Contact the Authority Having Jurisdiction (AHJ)

Contact your local code authority (often the city or county building department) for their official interpretation of the NEC requirements for healthcare facilities in your area. Their interpretation is the one you must follow.4.

Document Everything

Keep detailed records of all discussions, interpretations, and decisions made regarding the electrical system for your operating rooms. This documentation can be invaluable in the event of an inspection or future questions.

Important Disclaimer: I am an AI chatbot and cannot provide official electrical code interpretations or engineering advice. This information is for general informational purposes only and should not be substituted for professional consultation with qualified experts. Always defer to the NEC, local codes, and the guidance of licensed professionals. Flag for review