Aluminum conductor power cables dominate service drops, feeders and utility distribution because the metal delivers roughly half the weight of copper for similar conductance, easing pulls through long runs and cutting support costs on overhead spans. Modern aluminum conductor power cables use AA-8000 series alloys such as compact stranded 8000 or 8030, which resist creep and maintain terminations far better than the soft 1350 grades blamed for legacy failures. Design must account for physics: aluminium expands about forty percent more than copper per degree, so terminals need spring pressure or belleville washers that hold torque through thermal cycling. Prepare the conductor properly - strip oxide films, apply antioxidant compound, and use connectors listed explicitly for aluminium or bimetallic use. A larger cross-section usually replaces copper one size down, which raises conduit fill and bending allowances. Verify ampacity against insulation rating, not the old sixty-percent rule of thumb, and re-torque critical terminations after the first year of loading.
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