After the blackout, commuters traded rumors about sabotage until engineers traced the outage to brittle insulation overheating under peak load as summer demand spiked citywide. What caused the blackout according to the engineer-driven account?
Q1. After the blackout, commuters traded rumors about sabotage until engineers traced the outage to brittle insulation overheating under peak load as summer demand spiked citywide. What caused the blackout according to the engineer-driven account?
Answer: Overheated brittle insulation strained by peak summertime demand
Explanation: The engineers' investigation traced the cause to brittle insulation overheating under peak summer demand load, distinguishing the technical finding from the earlier public rumours.