Electrical devices comprising polymeric insulating or semiconducting members

An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising:

• (a) an electrically conductive member comprising at least one electrically conductive substrate;
• and
• (b) at least one semiconductive member substantially surrounding the electrically conductive member, wherein the semiconducting member comprises a polymer selected from the group consisting of ethylene polmerized with at least one comonomer selected from the group consisting of C.sub.3 to C.sub.20 alpha-olefins and C.sub.3 to C.sub.20 polyenes, and wherein the polymer has a density in the range of about 0.86 g/cm.sup.3 to about 0.96 g/cm.sup.3, a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent, and the semiconducting member further comprises a conducting filler to render it semiconducting.

An electrically conductive device having reduced treeing without the need of a treeing inhibitor, said device comprising:

• (a) an electrically conductive member comprising at least one electrically conductive substrate;
• and
• (b) at least one protective layer substantially surrounding and supported by the electrically conductive member, wherein at least one layer comprises a polymer selected from the group consisting of ethylene polymerized with at least one comonomer selected from the group consisting of C.sub.3 to C.sub.20 alpha-olefins and C.sub.3 to C.sub.20 polyenes, and the polymer has a density in the range of about 0.86 g/cm.sup.3 to about 0.96 g/cm.sup.3, a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent.