INFORMATION TECHNOLOGY
EQUIPMENT INCLUDING ELECTRICAL
BUSINESS EQUIPMENT (NWGQ)
USE
This category covers equipment, appliances and systems rated 600 V or
less normally found in offices and other business establishments, residences
(homes), educational facilities, and other similar environments classified as
ordinary locations.
This equipment has been investigated for installation in information technology
equipment (computer) rooms as defined in ANSI/NFPA 75, ??Protection
of Electronic Computer/Data Processing Equipment,?? and Article 645
of ANSI/NFPA 70, ??National Electrical Code?? (NEC), unless the equipment
is otherwise identified by a marking or instruction.
EQUIPMENT TYPES
Equipment may be electronic or electromechanical in design or a combination
thereof.
Various groupings of equipment are covered under this category, such as:
Displays: Flat-panel displays, LCD displays, monitors, plasma displays.
Information processing equipment: Central processing units (CPUs),
hand-held computers (personal assistants), laptop computers, notebook
computers, pen-based computers, personal computers, point-of-sale terminals,
scanners (including portable bar code scanners), servers, work stations.
Accessories: Docking stations, flash memory cards, keyboards, mouse,
PCMCIA-memory-modem cards, port replicators, trackballs.
Information storage equipment: Automated information storage equipment,
CD-ROM/RW drives, disk drives, DVD drives, tape drives, optical
drives.
Telecommunication equipment: Cellular site equipment, cordless telephone
sets, facsimile machines, ISDN systems and telephones, modems, key
telephone systems, powerline communication equipment, private automated
branch exchanges (PABXs), telephone answering machines, telephone sets,
voicemail systems, IP telephones, IP systems, wireless telephony systems.
Office appliances: Adding machines, bursters, calculators, collators, dictation
and transcribing machines, electric typewriters, erasers, folding,
embossing and sealing machines, label printers, microfilm readers, motoroperated
file cabinets, overhead projectors, paper cutters, paper shredders,
pencil sharpeners, sorters, stackers, staplers.
Printers/Reproduction equipment: Copiers, duplicating machines, microfilm
printers, mimeograph machines, plotters, printers.
Mailing, banking and currency-handling equipment: Cash registers, coin
counters, feeders and dispensers, accounting machines, check-writing-,
-assigning, -dating, -inserting, -mailing, -numbering and -stamping
machines, point-of-sale terminals.
Multimedia equipment/accessories: Cable modems, digital cameras, DLP
projectors, LCD projectors, microphones, set top boxes, speakers, video conferencing
systems.
Network equipment: Baluns, bridges, fiber optic transceivers, hubs,
nodes, Power over Ethernet (PoE) equipment (e.g., power source equipment
[PSE] and powered devices [PD]), repeaters, routers, switches, transceivers.
Wireless (RF, infrared) transceiving equipment: RF modems, hand-held
computers with integral transceivers.
Static neutralizing equipment: Power units with discharge bars used with
or within copiers, collators, film-plate processors, digital printers, duplicating
machines and similar equipment.
Interconnecting cable assemblies: Cable assemblies intended for use
beneath raised floors of computer rooms. These assemblies are also covered
under Computer Interconnection Cable Assemblies (DVPJ).
Included within the above groupings is equipment which is battery powered,
either by standard-size consumer-replaceable batteries (e.g., AA, C, D),
or nonstandard sizes specified by manufacturer, type and ratings.
This category also covers power distribution units (PDUs) and computer
power centers investigated as part of a computer system for use exclusively
in information technology equipment (computer) rooms in accordance with
Article 645 of the NEC. This equipment is connected to branch circuits
unless otherwise indicated in the manufacturer?s installation instructions,
and it distributes power to other units in the computer system by means of
interconnecting cable assemblies complying with one or more of the wiring
methods outlined in Article 645 of the NEC. Many of these units require
special installation, such as a separate transformer, special grounding methods,
motor-generator equipment, air conditioning, etc. Such features are covered
in the manufacturer?s installation instructions.
INSTALLATION
Some equipment has been investigated for installation in a restricted
access location, such as a dedicated equipment room or telecommunication
equipment closet, where access is limited to trained service personnel. Such
equipment is provided with a marking or installation instructions that state
??To be installed only in a Restricted Access Location,?? or similar wording. If
also intended for installation over a concrete or noncombustible surface,
such equipment will also be marked ??Suitable for mounting on concrete or
other noncombustible surface only,?? or similar wording.
Equipment installed in a restricted access location generally receives
power from a centralized d.c. power source. If field wiring terminals are not
contained in an internal compartment, both protection of exposed wiring
terminals and wiring methods used for such equipment are intended to be
provided in accordance with (1) markings on or instructions with the equipment,
and (2) the provisions of Sections 110.26 and 110.27 of the NEC.
Products such as LAN transceivers and baluns investigated for use in airhandling
spaces are marked ??Suitable for Use in Other Environmental Air
Space in Accordance with Section 300.22, (C) of the National Electrical
Code?? or ??Suitable for Use in Air Handling Spaces.?? These products have
been additionally investigated to UL 2043, ??Fire Test for Heat and Visible
Smoke Release for Discrete Products and their Accessories Installed in Air-
Handling Spaces.?? Products that bear the marking are suitable for installation
in accordance with Section 300 of the NEC, Chapter 4 of ANSI/NFPA
90A, ??Standard for the Installation of Air-Conditioning and Ventilating Systems,??,
Section 602 of the ??International Mechanical Code,?? and Section 602
of the ??Uniform Mechanical Code.??
When Listed equipment intended for use with a detachable power-supply
cord is not provided with such a cord, a cord suitable for connection of the
equipment to the branch circuit should be separately provided.
Equipment intended to be installed in closed and multiunit standard racks
and cabinets has been determined to be suitable for use in ambient temperatures
not exceeding the manufacturer?s recommended ambient temperature
as specified in the equipment?s installation instructions.
Equipment identified with an Enclosure Type designation, or as ??Raintight??
or ??Rainproof,?? is intended for use as indicated in Electrical Equipment
for Use in Ordinary Locations (AALZ).
ACCESSORIES
Field-installed accessories to Listed equipment are provided with suitable
markings and/or instructions detailing proper installation or assembly of
the accessory with either a specific or generic Listed equipment specified in
the markings or instructions.
OUTPUT CONNECTORS/CIRCUITS
Class 2 circuits are marked ??Class 2.?? All other output circuits, including
those associated with the Universal Serial Bus (USB), IEEE 1394 bus and
PS/2 connectors are limited-power circuits supplied by ANSI/UL 60950-1
limited-power sources, unless:
? the circuits are clearly telecommunication circuits (e.g., RJ series
modular jack, 50-pin commercial connectors with insulation-piercing
terminals). These circuits are limited to telecommunication network
voltages (TNV) and are suitable for connection to the telecommunication
network and distribution wiring in accordance with Article 800 of
the NEC; or
? the circuits are marked, or otherwise identified in the installation
instructions with the type of circuit (e.g., Class 1), intended cable type
(e.g., DP-2) or specific equipment intended to be interconnected (e.g.,
mfr/model printer).
Limited-power circuits of listed ITE supplied by limited-power sources are
recognized by Section 725.41(A)(4) of the NEC as being equivalent to Class
2 circuits for purposes of applying Article 725 Class 2 wiring requirements.
SPECIAL CONSIDERATIONS
Equipment investigated with respect to security or burglary resistance is
covered under Access Control System Units (ALVY), Antitheft Alarms and
Devices (ATJT) and other associated categories. Card readers, badge readers
and similar identification equipment covered under this category have not
been investigated with respect to security.
The burglary and theft protection features of coin-operated equipment,
banking and currency-handling equipment, cash registers, coin counters and
the like have not been investigated.
Automated teller machines (ATMs) investigated for security and burglary
resistance are covered under Automated Teller Systems (TPEU). ATMs that
have not been investigated for security protection are covered under Bank
Equipment (BALT).