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The new 2023 NFPA 70 Sec. 215.15 requires the line-side busbar or terminals of equipment supplied by feeder taps or transformer secondary conductors to be protected from accidental contact by placing barriers on overexposed, energized parts. This echoes the line-side barrier protection requirements for services found in Sec. 230.62(C) applies to panelboards, switchboards, switchgear, or motor control centers supplied by feeder taps or transformer secondary conductors. During maintenance and servicing, it is very likely that an electrical worker can be exposed to inadvertent contact with energized parts on the line side of a feeder tap or secondary conductor disconnect, even if the disconnect is in the open position.
Here is 215.15
215.15 Barriers.
Barriers shall be placed such that no energized, uninsulated, ungrounded busbar or terminal is exposed to inadvertent contact by persons or maintenance equipment while servicing load terminations in panelboards, switchboards, switchgear, or motor control centers supplied by feeder taps in 240.21(B) or transformer secondary conductors in 240.21(C) when the disconnecting device, to which the tap conductors are terminated, is in the open position.
Here is 215.15
215.15 Barriers.
Barriers shall be placed such that no energized, uninsulated, ungrounded busbar or terminal is exposed to inadvertent contact by persons or maintenance equipment while servicing load terminations in panelboards, switchboards, switchgear, or motor control centers supplied by feeder taps in 240.21(B) or transformer secondary conductors in 240.21(C) when the disconnecting device, to which the tap conductors are terminated, is in the open position.