Storm Damage: Leaning Pole and Exposed 277-V Conductors
A maintenance crew responds to a nighttime outage on a 277/480-V parking-lot and roadway lighting circuit after a severe storm. They find a 30-ft wood pole leaning about 10 degrees over a sidewalk, with the handhole cover missing and exposed energized conductors visible. The primary 12.47-kV overhead line is 22 ft above the pole top and still energized. The bucket truck is parked on a 4% slope, with outriggers only partially deployed on a landscaped island. The foreman wants to cut the 277-V circuit at the panel and remove the pole immediately to restore the sidewalk before morning traffic. Rain is continuing, and the area is not barricaded. Two apprentices are on site. The circuit is not locked out, and the panel is 300 ft away in a locked utility room; the key is with the on-call electrician, who is 25 minutes away.
1. List the hazards and the immediate actions required before anyone approaches the pole.
Read the worked answer
Treat the exposed 277-V conductors as energized until the circuit is locked out and tested. The leaning pole may continue to move, and the 12.47-kV line above is still energized, so the area is an electrical and structural exclusion zone. Immediate actions: stop work; barricade the sidewalk and street with cones, tape, and a spotter; keep the apprentices and public back; call the utility for the primary line and the on-call electrician for the 277-V panel; establish the approach boundary for the primary and do not operate the bucket near it; wear appropriate arc-rated PPE and use a noncontact voltage tester only after the utility confirms the primary status. Do not cut the 277-V circuit at the panel and remove the pole until the panel is locked out, tagged, and tested at the pole.
2. Evaluate the bucket truck setup and the foreman’s plan to cut and remove the pole now.
Read the worked answer
The bucket truck is not set up safely. A 4% slope may be within some manufacturers’ limits, but the outriggers are only partially deployed and the landscaped island may be soft or undermined by rain; outriggers need full deployment on stable pads, with the truck level and the wheels chocked. Rain increases conductivity and slip hazards. The foreman’s plan to cut and remove the pole immediately is unsafe because the 277-V conductors may still be energized, the pole may be supporting the primary line, and removal could cause the pole to fall or contact the primary. The utility must confirm the primary is clear and the 277-V circuit must be de-energized, locked out, tagged, and tested before any cutting. Traffic control and a competent person should be on site.
3. Outline the safe restoration sequence and the documentation you would require.
Read the worked answer
Safe sequence: secure the scene and traffic control; notify the utility and the on-call electrician; de-energize, lock out, tag, and test the 277-V circuit at the pole; have the utility protect or clear the primary; stabilize or remove the pole only under a planned procedure with the bucket truck properly set; replace the pole and damaged luminaire or conductor; inspect the foundation and anchoring; re-energize only after insulation resistance and continuity checks; restore the sidewalk. Document the incident with photos, voltage verification, switching orders, tailboard briefing, and the names of all personnel. Report the near miss and review the lockout/tagout and storm-response procedures.