Cap for insulator support housing

A cover cap for a support insulator housing having a hanger rod passing coaxially therethrough for mounting to said cover cap, said cover cap comprising:

• a. a top member having a perimeter edge, a centrally located hole passing therethrough for receiving the hanger rod, and an upper surface upon which the hanger rod is mounted;
• b. a sloping side wall extending coaxially outwardly and downwardly from the perimeter edge of the top member to terminate with a lower perimeter surface spaced below and outward of the perimeter edge of the top member;
• c. a radial lip extending outwardly from the lower perimeter surface of the sloping side wall and having a lower surface adapted to mate with the support insulator housing;
• d. an axial lip extending axially downward from the lower perimeter surface of the sloping side wall, the axial lip adapted to insert into the support insulator housing;
• e. means opening through the sloping side wall for passing a jet of scavenging gas into the interior region encompassed by the sloping side wall;
• f. at least one access opening in the sloping side wall for providing access into the interior region encompassed by the sloping side wall;
• and
• g. removable lid means adapted for covering the access opening in the sloping side wall.