POWERFLEX® Type SHD-GC
2000 Volt. Tinned Copper Conductors
EPR Insulation. Tinned Copper Braid Shield.
Integral Fill Inner Jacket. Extra Heavy Duty CPE Jacket.
4 AWG-500 kcmil. –50° C to 90° C
APPLICATIONS
Southwire’s Powerflex Type SHD-GC cables are designed for use with mobile, reeling or stationary
mining equipment, continuous mining machines or longwall loading machines, blast hole drillers,
heavy duty trailing cable where maximum protection is required. Also for medium and high voltage
use on shovels, draglines, dredges, and cranes. This cable is also suitable for high voltage distribution in mines and tunnels where more flexibility is desired, especially in vertical drops. Powerflex
SHD-GC is also an excellent choice for Marine ship to shore power supplies as it is designed for the
harshest conditions and environments.
SPECIFICATIONS
Southwire’s Powerflex Type SHD-GC cables comply with:
 ASTM B-33 and B-172
 MSHA P-122 and Pennsylvania DER (P-122-53) accepted
 UL
 CSA
 ICEA S-75-381/ NEMA WC-58
CONSTRUCTION
Southwire’s Powerflex Type SHD-GC cables have soft drawn, annealed, tinned copper conductors
covered by black flame resistant EPR that provides ozone, oil, water, solvent corrosive and abrasion
resistance. A Mylar separator is applied under the insulation to aid in stripping. The insulation shield
consist of a tinned 5-wire copper braid (60% coverage) duplexed with a nylon denier colored tracer
(40% coverage). The assembly includes two tinned copper bare ground wires that maintain contact
with the insulation shields and one yellow tinned copper HD EPR insulated ground check for monitoring purposes. A served woven nylon polyester binder is applied over the cable for added core
stability. The outer jacket is a dual layer, black, flame resistant, thermosetting CPE rubber that provides excellent resistance to UV, oil, water, solvents, corrosives, cuts, tears and abrasions. A woven
nylon polyester binder is served between the two jackets to provide added dynamic and mechanical
integrity.
POWERFLEX Type SHD-GC
Power Conductors
Grounding Conductors
Size Strands Insulation Number
Size
Strands
Ground Check
Size
Strands
Weight
per
Approx.
1000’
O.D.
Ampacity
+
(lbs)
3 Conductor Cable
4
259
.060”
2
8
168
8
168
1.40”
1347
114
2
308
.060”
2
7
133
8
168
1.59”
1895
152
1/0
273
.080”
2
5
133
6
273
1.86”
2785
205
2/0
324
.080”
2
4
259
6
273
2”
3190
237
3/0
418
.080”
2
3
259
6
273
2.13”
3636
274
4/0
532
.080”
2
2
308
6
273
2.31”
4684
316
250
608
.095”
2
1
385
6
273
2.51”
5750
352
350
855
.095”
2
1/0
273
6
273
2.81”
6817
433
500
1221
.095”
2
3/0
418
6
273
3.19”
9998
536
+Ampacities (per conductor) are based on 40° C ambient temperature in air, 90° C conductor temperature
per ICEA S-75-381, Appendix H-1