These requirements cover secondary protectors for use in single-
or multiple-pair-type communications circuits that are intended to
be installed in accordance with Article 800 of the National
Electrical Code, ANSI/NFPA 70.
Secondary protectors are intended to be used in the protected
side of telecommunications networks that have an operating rms
voltage to ground less than 150 volts and installed or used in
accordance with the National Electrical Code, NFPA 70.
These requirements do not cover telephone protectors that are
covered by the Standard for Protectors for Paired-Conductor
Communications Circuits, UL 497. These requirements do not cover
telephone equipment such as telephone answering devices,
residential telephone instruments, telephone dialers, cordless
telephones, key systems, and private-branch exchange equipment that
is covered by the Standard for Telephone Equipment, UL 1459.
These requirements do not cover cellular telephones or other
receiver/transmitter-type devices. Equipment of this type is
covered by the Standard for Radio Receivers, Audio Systems, and
Accessories, UL 1270.
These requirements may be used, directly or by reference, to
investigate portions of other equipment not classified as
telecommunications equipment accessories and that may be connected
to a telecommunications network, insofar as they may be applicable
to such equipment.
These requirements do not cover wires and cables intended to be
permanently installed in a building in accordance with Article 800
of the National Electrical Code, NFPA 70.
A product that contains features, characteristics,
components, materials, or systems new or different from those
covered by the requirements in this standard, and that involves a
risk of fire or of electric shock or injury to persons shall be
evaluated using appropriate additional component and end-product
requirements to maintain the level of safety as originally
anticipated by the intent of this standard. A product whose
features, characteristics, components, materials, or systems
conflict with specific requirements or provisions of this standard
does not comply with this standard. Revision of requirements shall
be proposed and adopted in conformance with the methods employed
for development, revision, and implementation of this standard.
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