The devices labeled 'L' in the illustration are _________. EL-0003 A. load lights indicating that the generator breaker is closed and the generator is supplying power to the main bus B. synchronizing lights. When the synchroscope is at the 12 o'clock position the lights are on at their brightest indicating that the generators are in phase C. emergency lighting for the switchboard to enable the meters to be read in case of power failure D. synchronizing lights. When the synchroscope is at the 12 o'clock position the lights are at their dimmest or out indicating the the generators are in phase