Chapter 5 Construction Inspection
5.1 General. This chapter provides typical construction requirements
that should be considered in the evaluation.
5.1.1 The actual requirements to be used for the construction
inspection should come from the applicable primary
product safety standard and electrical installation codes.
5.1.2 Some common elements of construction requirements
should include but are not limited to those identified in Sections
5.2 through 5.13.
5.2 Electrical Code Considerations. Ensuring that the product
can be installed in accordance with the electrical code should
include but is not limited to the verification of the following:
(1) Presence of complete equipment nameplate(s)
(2) Equipment construction provides for a code-compliant
installation
(3) Installation instructions include sufficient detail (showing
raceway entry points, supply conductor wiring methods,
supply conductor types, field wiring torque values, and
installer supplied overcurrent protection)
(4) Adequate wire bending space for all field wiring terminals
5.3 Construction of Enclosures. Enclosure inspections should
include but not be limited to the following:
(1) Suitable use of metallic and nonmetallic construction materials
(2) Enclosure-type rating (e.g., 1, 3R, 4X) suitable for the intended
application or installation environment
(3) Methods of corrosion protection for internal and external
parts
(4) Methods of fastening doors and covers
(5) Hinged doors open at least 90 degrees
(6) Bonding methods of dead metal parts likely to become
energized
(7) Accessibility of live parts
5.4 Disconnecting Means. The means to disconnect equipment
should be reviewed for suitability and compliance with
installation codes.
5.5 Main Overcurrent Protection Device (OCPD). Main overcurrent
protection supplied by the manufacturer or field installed
should be verified as suitable for the loads involved,
voltage, and interrupting rating.
5.6 Field Terminations. Field wiring terminals should be identified.
5.7 Components. Component inspections should include but
not be limited to the following:
(1) Accuracy of and correlation between component identification
in drawings, the bill of material, and marking
within equipment
(2) Critical components listed or recognized and labeled by a
nationally recognized testing laboratory (NRTL)
(3) Critical components used in accordance with their listing
or the “conditions of acceptability” defined by an
NRTL
(4) Suitability of mounting methods
(5) Suitability of components to perform as intended considering
the critical/safety function of the device, mechanical
and electrical loads, and other factors affecting the immediate
environment or performance of the component
5.8 Overcurrent Protection. Overcurrent inspections should
consider suitability of applications that include but are not
limited to the following:
(1) Overcurrent protection of conductors per the conductor