| 1.0 |
SCOPE: |
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1.1 |
This specification covers the construction requirements for
Underground Feeder Cable, Type UF and TWU, for use in accordance
with the National Electrical Code or operation at a potential of
600 Volts or less and at a temperature of 75°C or less. UL listed
for UF and c(UL) for TWU |
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| 2.0 |
CONSTRUCTION: |
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2.1 |
Conductor:
Soft drawn bare copper meeting the requirements of ASTM
specification B-3 or B-8. |
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2.2 |
Temperature Rating:
-10°C +75°C. |
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2.3 |
Insulation:
Polyvinyl chloride, 75°C rated conforming to UL Standards 493 and
83. |
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2.4 |
Manufacturer's Identification:
Surface marked with Paige-Electric, voltage rating, size and type,
and UL file numbers. |
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2.5 |
Underwriters' Laboratories Approval:
All cables shall be tested physically and electrically in accordance
with UL Standard 493, and 83 (paragraphs 28.1, 29.1 and 29.2). All
reels and cartons bear UL and/or c(UL) labels. |
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| 3.0 |
PARALLEL CONSTRUCTION: |
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3.1 |
Multiple wires, of varying sizes and colors, are bound together
with a reinforced filament tape in a helical fashion. |
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SIZE AWG |
STRANDING |
INSULATION WALL (MILS) |
APPROX. DIAMETER (INCHES) |
CURRENT CARRY CAPACITY* |
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14 |
SOLID |
.060 |
.190 |
15 |
| 12 |
SOLID |
0.060 |
0.205 |
20 |
| 10 |
SOLID |
0.060 |
0.225 |
30 |
| 8 |
SOLID |
0.080 |
0.285 |
40 |
| 14 |
7 |
0.060 |
0.200 |
15 |
| 12 |
7 |
0.060 |
0.215 |
20 |
| 10 |
7 |
0.060 |
0.240 |
30 |
| 8 |
7 |
0.080 |
0.300 |
40 |
| 6 |
7 |
0.080 |
0.340 |
55 |
| 4 |
7 |
0.080 |
0.390 |
70 |
| 2 |
7 |
0.080 |
0.450 |
95 |
| 1 |
19 |
0.095 |
0.520 |
110 |
| 1/0 |
19 |
0.095 |
0.560 |
125 |
| 2/0 |
19 |
0.095 |
0.605 |
145 |
| 3/0 |
19 |
0.095 |
0.660 |
165 |
| 4/0 |
19 |
0.095 |
0.715 |
195 |
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| *Current carrying capacity based on not more than
3 conductors in raceway or cable or direct burial (at room temperature
of 30°C) |
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| 4.0 |
SPLICING RECOMMENDATIONS |
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4.1 |
Underground splices shall be made in accordance with National
Electrical Code® Articles 300.5 (Underground Installations) and
110.14 (Electrical Connections) using 3M DBY-6 or DBR-6 or 82A
series connectors,
which are UL listed under "UL 486D-Direct Burial", for wet or damp
locations, 600 volts. Connectors that are not listed at all, or
listed under UL Standard UL 486C as "Compression Connectors", shall
not be allowed. |
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