Chapter 4 Pre-Site Preparation
4.1 Pre-Site Information.
4.1.1 General. The following information should be provided
for all evaluations:
(1) Layout drawings showing components with designators
that match the schematic and actual marks on, or adjacent
to, the components
(2) Electrical schematic drawings for all power, control, and
safety circuits
(3) A bill of material that includes certification details for all
critical components
(4) Limitations or conditions of acceptability for critical
components
4.1.2 The information in Section 4.1.1 should be requested
by the evaluator prior to or upon arrival on site.
4.2 Used Equipment. Evaluating used equipment should include
additional consideration and preparation. Normal wear,
intentional modification, and abnormal events that can cause
mechanical and electrical changes and affect conformity
should be considered.
4.2.1 Before the evaluation, a review of service history and
construction changes should be performed to resolve common
noncompliant items.
4.2.2 Common issues that should be considered can include:
(1) Damaged Components. Inspection of mechanical components,
such as enclosures, conduit, and fittings, and
electrical devices should be completed to identify any visible
damage or deformity that could render a product
noncompliant or require replacement. Those items
known to be damaged should be reviewed with the evaluating
body in advance when possible.
(2) Suitability for Use. An assessment of the environment surrounding
equipment should be completed to observe
changes that have occurred over time. Changes to building
construction, moving the equipment, and installing
other equipment close by should be reviewed for any effect
on compliance in the changed environment. Enclosure
ratings, devices that penetrate enclosures, and the
environment surrounding the equipment should be reviewed
in advance when possible.
(3) Availability of Drawings. Availability of technical drawings
or schematics should be ensured in advance when possible.
Because a lack of technical drawings or schematics
can increase the complexity or hinder an evaluation, accurate
drawings should be produced.
(4)*Availability of Manufacturer or Technical Support. Availability
of the manufacturer’s technical information or
technical support should be ensured in advance where
possible.
4.3 Standard(s). The FEB should select appropriate standards
based on the design and application of the equipment under
evaluation.
4.3.1 General. Where no single standard applies to the equipment,
applicable portions of related standards for subassemblies
and supplementary standards should be applied.
4.3.2* Primary Standard. The primary standard to be used
should be a nationally recognized product safety standard
written and maintained by a standards development organization
that issues product safety standards, such as Underwriters
Laboratories or Factory Mutual Research Corporation.
4.4 Jurisdictional Notification. The FEB should notify the
electrical AHJ in writing when an evaluation is initiated and
about to commence.
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.
791–6 UNLABELED ELECTRICAL EQUIPMENT EVALUATION
2012 Edition