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source of supply

  1. jar546

    NEC 408.4(B) Source of Supply Label Acceptable to You

    With the 2017, there has been added language to the NEC in 408.4(B) that reads as follows? (B) Source of Supply. All switchboards, switchgear, and panelboards supplied by a feeder(s) in other than one- or two-family dwellings shall be permanently marked to indicate each device or equipment...
    • jar546
    • Thread
    • nec 408.4(b) panelboard labeling source of supply switchgear labeling
    • Replies: 3
    • Forum: Electrical Codes
  2. jar546

    NEC 408.4 Field Identification Required for Panelboards

    There is one area that I am a bit particular in, especially knowing how frustrating it can be trying to troubleshoot an electrical problem or simply shut down the right circuit of a panel. Just a frustrating is trying to figure out where a panelboard gets its supply voltage from. Luckily the...
    • jar546
    • Thread
    • ne 408.4 nec 408.4(a) nec 408.4(b) source of supply
    • Replies: 1
    • Forum: Electrical Codes
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