Southwire type SE cable is constructed with Alumaflex™ AA-8000 series aluminum alloy, compacted stranded conductors. The conductors are covered with a sunlight-resistant type XHHW-2 or type THHN/THWN-2-insulation. A reinforcement tape is wrapped around the conductors for added strength and conformity. A gray sunlight-resistant polyvinyl chloride (PVC) outer jacket covers the entire assembly. Style SEU cable has two phase conductors surrounded by a concentric neutral while the SER style has two, three or four phase conductors and a bare neutral.