Fault Current Label. In this podcast we review the change in the nfpa 70 national electrical code 2011. Service equipment at other than dwelling units shall be legibly marked in the field with the maximum available fault current.
Us made signs and labels. The nec 110 24 a states. Warning maximum available fault current amps ansi label decal 5x3 5 in.
The field marking s shall include the date the fault current calculation was performed and be of sufficient durability to withstand the environment involved.
Nec doesn t give much for specifications on the label other than the field marking s shall include the date the fault current calculation was performed and be of sufficient durability to withstand the environment involved. Available fault current is the maximum current in a short circuit. Once you have calculated the potential fault current you need to make sure to label the equipment with this information. In this podcast we review the change in the nfpa 70 national electrical code 2011.
