Available Fault Current Label

Available fault current labeling get your free fault current label guide this guide is an essential resource for compliantly labeling 3 phase service equipment. Rating is available when the video has been rented.

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The nec 11024a states.

Available fault current label. Jade learning posted on january 3 2013 september 7 2018 one question we get on 2011 nec changes is the requirement to field mark service equipment with the available fault current. No exact location for placement of this label on the equipment is specified. Electrical service panels must be labeled with the current and the date it was calculated.

That information and the date it was determined must be put on a label that is field applied to the equipment. Figure 2 is an example of what is required by 11024. In this podcast we review the change in the nfpa 70 national electrical code 2011.

Available fault current is the maximum current in a short circuit. A fault study must be done to identify the maximum amount of fault current available. When it comes to printing the labels im not sure what your cheapest option will be.

The app will let you input the available fault current from the utility and the service conductor data in order to calculate the fault current at the end of the conductors. In many cases this information comes from the utility. Knowing the available fault current and applying available fault current labels on new equipment is also now mandated by national electrical code nec.

This section packs a punch when it comes to safety. If it changes the label needs to be replaced with the new calculation and date. Service equipment in other than dwelling units shall be legibly marked in the field with the maximum available fault current.

So far i have found a fault current calculator on line that shows both line to line fault current and line to neutral fault current which one of these values are used for the label or both. Available fault current article 11024. Available fault current label 11024 15min13sec mikeholtnec.

Available fault current label nec 11024 help with a straight forward answer on how to calculate the available fault current at service point. The requirement of labeling the available fault current as part of 11024 though did more than just elevate the awareness of meeting 1109 and 11010 when it was introduced as part of nec 2011. Field marking available fault current nec 11024 by.

It simply states the maximum available fault current and the date it was calculated and is of sufficient durability to withstand the environment involved.

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