Environmental aspects are increasingly important when building an electricity network today. Covered conductors are not as vulnerable to damage and disruption caused by birds or branches as traditional, bare conductors. However, smaller phase distance of covered conductors increases the risk of such short circuits on cross arms. This risk can be diminished with e.g. twig protector, preventing branches from sliding along the covering, and bird protection that - when installed onto live parts - prevents birds and branches from touching live parts.