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This is a 600V triplex aluminum URD cable for single-phase underground service: two 4/0 phase conductors and one 4/0 neutral, rated for direct burial or duct installation. The XLPE insulation is moisture- and heat-resistant, with a 90°C maximum operating temperature and an allowable ampacity of 315 A buried or 240 A in duct. It suits service drops from a transformer to a building, subpanels and outbuildings. Against copper URD it is lighter and easier to pull, but aluminum needs antioxidant and proper torque on lugs, and it takes more care at terminations. Buyers rate it highly, though no detailed owner commentary is available.
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This is a triplex underground residential distribution (URD) cable with three 4/0 AWG aluminum conductors: two phase conductors and one neutral. It is rated 600V and designed for single-phase secondary power distribution in underground systems, including service drops from transformers to buildings. It can be direct buried or installed in ducts.
The conductors are aluminum, either concentric stranded or compressed. Compressed conductors are less bulky, stronger and tougher. Stranded conductors are more flexible and have lower electrical resistance. The insulation is black cross-linked polyethylene (XLPE). It is watertight and resists corrosive substances, oil, heat and flame. The cable operates at up to 90°C in wet and dry environments.
Typical uses include single-phase service to meters in residential and rural areas, small commercial buildings, municipal facilities, single-family homes and small multi-unit residences. It is also used for street lighting, residential solar and battery storage connections, and temporary power for construction, events and backups.