FAQ
39
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.
Expert Analysis
A new section has been added to clarify that barriers can
mitigate the potential for shock for personnel working on
electrical equipment. The new requirement for barriers
to provide protection against inadvertent contact mirrors
the requirements in 230.62(C).
This requirement is limited to panelboards, switchboards,
switchgear, or motor control centers supplied by feeder
taps in 240.21(B) or transformer secondary conductors
in 240.21(C). Where the tap rules are applied it is unlikely
that the source of supply to the overcurrent protective
device can be deenergized during maintenance and
other tasks. This revision ensures the exposed energized
parts on the line side of the overcurrent protective
device are protected against inadvertent contact.
When the disconnecting device to which the tap
conductors are terminated is in the open position,
the likelihood of contact with energized parts is
significantly reduced.
Material taken from the National Electric Code
®
is reprinted with permission
from NFPA 70
®
, 2023 edition. National Electrical Code
®
, Copyright 2022,
National Fire Protection Association, Quincy, MA. All rights reserved.
NEC
®
Text
Revision/New
215.18(A)-(E), 225.42(A)-(E) and
230.67(A)-(E) Surge Protection
Requirements Expanded
Leviton Comment: This guides purpose is to simplify
and condense the NEC changes. In that spirit we have
merged Articles 215.18(A)-(E), 225.42(A)-(E) and
230.67(A)-(E). This was done because the text is almost
the same in each article. The text just resides in dierent
Articles of the NEC and while few words dier in (A),
the intent is the same. The broader significance of
these changes is the fact that dormitories, guest rooms
and nursing homes have been added to the list of places
that need surge protection.
continued on page 40