advance such that they can be specified in detail.
The items of the second list, "Quantities and
Description of Cable," are covered in general in
these guide specifications, and should be applicable
when procuring insulated wire and cable via supply
or construction contracts. These items should be
verified or specified in the level of detail needed
for each particular case.
1). Characteristics of Systems on Which Cable Is To
Be Used.
a. Normal operating voltage between conductors.
b. Frequency.
c. Number of phases & conductors.
d. Cable insulation level (1003514r 133%).
e. Minimum and maximum temperatures at which cable
is expected to be operated.
f. Description of installation.
1.In cable trays.
2.In ducts.
3.Other.
g. Conditions of installation.
1.Ambient temperature.
2.Wet or dry location.
3.Number of loaded cables in cable trays, duct
bank, or conduit. If in conduit, give type of
conduit (metallic or non-metallic), number of loaded
circuits, whether conduit is enclosed or run
exposed, and spacing between conduits.
4.Load factor.
5.Method of bonding and grounding of metallic
coverings (including shields).
6.Chemical exposure.
2).
Quantities and Description of Cable.
a. Total number of meters (feet), including lengths
for customer testing, and lengths if specific
lengths are required.
b. Type of cable. Describe as single-conductor,
two-conductor, etc.
c. Rated circuit voltage, phase to phase.
d. Type of conductors - copper or aluminum.
e. Size of conductors - AWG or circular micrometers
(mils). If conditions require other than standard
stranding, a complete description should be given.
f. Grade of insulation.
g. Thickness of insulation, in micrometers (mils).
h. Type of outer covering.
i. Maximum allowable overall diameter, in mm
(inches). When duct space is not limited, it is not
wise to restrict the overall diameter.
j. Method of conductor identification.
In making wiring layouts for those installations
using multiple-conductor cables, care should be
taken to avoid the use of assemblies not normally
stocked by manufacturers, or of small quantities
SECTION 16120A
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