Instructions

The National Electric Code, 2020, requires the following:

 

110.16(B) In other than Dwelling units, in addition to the requirements in (A), a permanent label shall be field, or factory applied to service equipment rated 1200 amps or more. The label shall contain the following information:

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1. Nominal system voltage

2. Available fault current at the service overcurrent protective devices

3. The clearing time of the service overcurrent protective devices based on the available fault current

4. The date the label was applied

 

110.24(A) & (B) Service equipment at other than dwelling units shall be legibly marked in the field with the available fault current. This marking(s) shall include the date the fault-current calculation was performed and be of sufficient durability to withstand the environment involved.

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If you do not have this label made by the factory specifically for your switchgear, we can make the label for you. 

 

To order your label, fill out all the information to the right and click the submit button.

 

You will need to get some information from the utility and from the circuit breaker or fuse cut sheet.

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The information about the utility transformer can be obtained by calling the utility.  

 

After you click the submit button, the information will be sent directly to me, I will do the calculation and have the label printed for you.

 

I will also email you a copy of the calculation so you can file it in your project file.