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Location of implementation for: <br />POLE-TOP GROUND MOLDING <br />EAGLE <br />MEASUREMENTS <br />INSVFFlCIENT EAGLE <br />M. / CLEMANCE <br />NE~T~L Location of implementation for: <br />PERCH GUARDS AND BIRD <br />SPIKES <br />• <br />Figure 4: Typical distribution three-phase pole configuration. <br />Three-phase power lines aze usually constructed with an 8-foot crossarm supporting two <br />conductors. A single energized phase conductor typically sits on a pole-top insulator. <br />Distribution three-phase tangent structures, without pole-top grounds or pole-top <br />mounted equipment, generally provide adequate separation for all but the largest raptors <br />since 44 inches of phase separation is provided. There is also a 20-degree angle between <br />the outer and center phase wires. This separation is appropriate in areas where large <br />raptors aze less likely to occur. In azeas where eagles use these poles as preferred <br />perches, additional protection to minimize the electrocution risk would be required. A <br />couple of different raptor protection device alternatives and their locations aze shown <br />above in Figure 4. <br /> <br />4.18-8 Revision Date: 2/11/05 <br />Revision No.: MR-70 <br />