024(C) Not exposed to physical damage.
(1) Where the
NEC or manufacturer's
instructions do not specify minimum height requirements for equipment
enclosures, enclosures installed outdoors containing an overcurrent device(s)
shall be installed so the bottom of the enclosure containing the overcurrent
de-vice(s) is not less than 24 inches above finished grade unless:
(a) The equipment enclosure or listed
equipment on which the enclosure is mounted is approved for pad-, floor-,
ground-, dock-, or pier-mounting; or
(b) The equipment enclosure is located over
concrete or asphalt paving that extends three or more feet horizontally from
the surface of the enclosure.
024(F) Not located over steps.
(2) If the overcurrent device is a part of a
panelboard that is being repaired or replaced in an existing location, the
installation is allowed to be made above the steps.
067(C) Performance testing.
(3) Where fuses rated 1,200 amperes and
higher are installed, the following shall be available to the inspector at the
installation site at the time of inspection prior to placing the equipment into
service:
(a) Documentation of all calculations
used to determine available arcing current at each set of fuses rated 1,200
amperes and higher and documentation proving a clearing time of 0.07 seconds or
less at the available arcing current;
(b) A copy of the written performance test
report for the arc energy reduction protection system detailing results for
tests for each set of fuses suppling known loads. The report shall include all
of the following:
(i) The date when tests were
performed.
(ii) Address of the
property where tests were performed.
(iii) The business name and contact
information for the employer of persons performing tests.
(iv) Names and dated signatures of all
persons performing the tests.
(v)
Documentation of all calculations used to determine available arcing current at
each set of fuses rated 1,200 amperes and higher.
(vi) Documentation required by 240.67(A) and
documentation of all equipment settings made or verified during
testing.
(vii) A copy of the
equipment manufacturer's instructions used to perform the test.
(viii) Documentation of all testing equipment
including dates of calibration.
087(C) Performance testing.
(4) Where the highest continuous current trip
setting for the actual overcurrent device installed in a circuit breaker is
rated or can be adjusted is 1,200 amperes or higher, a copy of the written
performance test report for the arc energy reduction protection system
detailing results for tests for each device with a known load. The report shall
be available to the inspector at the
installation site at the time of
inspection prior to placing the equipment into
service. The report shall
include all of the following:
(a) The date
when tests were performed.
(b)
Address of the property where tests were performed.
(c) The business name and contact information
for the employer of persons performing tests.
(d) Names and dated signatures of all persons
performing the tests.
(e)
Documentation of all calculations used to determine available arcing current at
each circuit breaker described in subsection (4) of this section.
(f) Documentation required by 240.87(A) and
documentation of all equipment settings made or verified during
testing.
(g) A copy of the
equipment manufacturer's instructions used to perform the test.
(h) Documentation of all testing equipment
including dates of calibration.
