A short circuit on a Red Line train prevented a failsafe from triggering and allowed the vehicle to leave the station while a passenger was trapped in a door, federal investigators concluded while ...
A Dorchester man dragged to death on the MBTA Red Line train in 2022 may have been the result of a short circuit of a door on the train, even with a failsafe in place to prevent movement when an ...
Q. What is the Code rule for sizing short circuit and ground fault protection for a single motor branch circuit? A. The motor branch circuit, short circuit and ground fault protective device must ...
BOSTON - The National Transportation Safety Board is confirming that faulty equipment caused the death of 39-year-old Robinson Lalin in April 2022. Lalin got his arm stuck in the door of an inbound ...
This is the first of a two-part series on the processes used to find the short circuit current duties of circuit breakers and fuses. In Part 1, we’ll use a simplified power system to illustrate the ...
The Red Line door that clamped down on a man’s arm and caused the death that prompted last year’s federal investigation into the MBTA failed because of a short circuit, the National Transportation ...