Description:
Pratt 250-250-3/0 Triplex Aluminum Direct Burial Cable has two 250 MCM gauge size live wires whereas the neutral is of 3/0 AWG size. The individual conductors are insulated with XLPE which have black color except for the neutral conductors whose insulator has yellow stripes. As a direct burial this serves 345 amps, while in ducts it wires 265 amps.
Applications:
#250 Pratt Aluminum Underground Distribution Cable specifically designed for underground distribution systems. In extreme environmental conditions, the cross-linked polyethylene is used since it can withstand temperatures of up to 90°C.
Conductors:
They are made of aluminum alloy which are compressed in 1350-H19. Only 99.5% of the conductor is made of aluminum the rest is made of zinc, copper and silicon.
Insulation:
The insulation is made of standard polyethylene or cross-linked polyethylene.
Features:
• Can resist high temperatures of up to 90°C
• Corrosion resistant conductors
• Heat and moisture resistant insulation
• Lead free triplex wire
• 600 volt URD cable
Standards:
• ASTM B-901
• ICEA S-105-692
• Federal Specification J-C-30B
• RUS Accepted
Technical Specifications: | |
Phase Conductor Size AWG: | 250 |
Phase Conductor Stranding: | 26 |
Phase Conductor Insulation Thickness: | 95 mls |
Base Neutral Messenger Size AWG: | 3/0 |
Base Neutral Strand: | 17 |
Diameter Single Phase Conductor (Mils): | 732 |
Diameter Complete Cable (O.D.) (Mils): | 1581 |
Weight Per 1000ft Total (Lbs.): | 853 |
Allowable Ampacity 90C (Amps): | 345 |
Allowable Ampacity in Ducts (Amps): | 265 |