|Description / Abstract
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|Products and Applications Included
This standard describes procedures for the installation,
testing, and documentation of electrical freeze protection and
process heat tracing systems. Heat tracing cable types covered by
this publication include: self-regulating, constant wattage, and
zone heating cables and mineral insulated (MI) heating cables
(see Figures 1.1(a)-1.1(e) below and on the following
System components used with these types of heat tracing cables
included power transformers, control panels, temperature sensors,
temperature controllers, contactors, circuit breakers, enclosures,
conduit, wire, and all necessary auxiliary equipment and
Products and Applications Excluded
The following types of heat tracing systems are specifically
excluded from this publication:
1. Skin effect heating systems
2. Impedance heating systems
3. Inductance heating systems
NOTE: ANSI/IEEE 844-2000, Recommended Practice for
Electrical Impedance, Induction, and Skin Effect Heating of
Pipelines and Vessels provides information about installing the
above mentioned systems in list items 1, 2, and 3.
Related Construction Materials
In addition to the electrical heat tracing components described
in 1.1, this publication includes related construction materials
including labels, adhesive tapes, attachment wire and components,
and thermal insulation and cladding.
Regulatory and Other Requirements
a) All information in this publication is intended to conform to
the National Electrical Code (ANSI/NFPA 70), and, in general, the
typical recommendations of electrical heat tracing manufacturers.
All work shall be performed using safety-related work practices in
accordance with NFPA 70E, Standard for Electrical Safety in the
Workplace. Installers should always follow the NEC, applicable
state and local codes, manufacturer's instructions when installing
electrical heat tracing. Articles 427 (ordinary areas) and 500
through 516 (Classified areas) of the NEC govern the installation
of electrical heat tracing systems. IEEE 515 and 515.1 are accepted
industry standards that also contain useful information about
installing electrical heat tracing systems.
b) Only qualified persons familiar with the construction and
installation of electrical heat tracing systems should install
heat-tracing systems. Administrative functions and other tasks can
be performed under the supervision of a qualified person. All work
should be performed in accordance with NFPA 70E, Standard for
Electrical Safety in the Workplace.
c) General requirements for installing electrical products and
systems are described in NECA 1, Standard for Good Workmanship
in Electrical Construction (ANSI). Other National
Electrical Installation Standards provide additional guidance
for installing particular types of electrical products and systems.
A complete list of NEIS is provided in Annex B.
|Additional Supplemental Documents