UtahEngineer
Member
- Location
- Utah
- Occupation
- Engineer
Hi,
I am looking for help on what is the definition of "Service Entrance Equipment".
Background:
We are performing a code review of a government project to provide power from an existing transformer to a new shelter building.
UFC 3-520-01 Interior Electrical Systems, with Change 2, states:
Provide the following specification requirements for SPD on the service entrance equipment
a. Use SPD to protect the electrical service entrance equipment.
We are installing a meter and breaker near this existing transformer, then feeding underground conduit & wire ~250 feet to a new shelter.
A colleague of mine interprets that we need to install an SPD at the "service equipment" (breaker by transformer where neutral is bonded to ground at this breaker).
However, I contend that by placing the word "entrance" between "service" and "equipment" that service entrance equipment would include the service equipment (breaker by transformer) and also everything from there to where the service enters the shelter and goes into the first panel, where I think the SPD can be fed from a branch breaker in the panel.
I couldn't find a definition of "Service Entrance Equipment", only "Service Equipment", so if you can point to a reference that would help clarify this for us. If this is not clearly defined, then I believe it is up to professional interpretation, and I think the intent is to install the SPD from the first panel.
I appreciate any feedback you can provide!
I am looking for help on what is the definition of "Service Entrance Equipment".
Background:
We are performing a code review of a government project to provide power from an existing transformer to a new shelter building.
UFC 3-520-01 Interior Electrical Systems, with Change 2, states:
Provide the following specification requirements for SPD on the service entrance equipment
a. Use SPD to protect the electrical service entrance equipment.
We are installing a meter and breaker near this existing transformer, then feeding underground conduit & wire ~250 feet to a new shelter.
A colleague of mine interprets that we need to install an SPD at the "service equipment" (breaker by transformer where neutral is bonded to ground at this breaker).
However, I contend that by placing the word "entrance" between "service" and "equipment" that service entrance equipment would include the service equipment (breaker by transformer) and also everything from there to where the service enters the shelter and goes into the first panel, where I think the SPD can be fed from a branch breaker in the panel.
I couldn't find a definition of "Service Entrance Equipment", only "Service Equipment", so if you can point to a reference that would help clarify this for us. If this is not clearly defined, then I believe it is up to professional interpretation, and I think the intent is to install the SPD from the first panel.
I appreciate any feedback you can provide!