Smokeumchevy,
Remember this, isolate before working on circuits, test twice before working on circuits,
DO NOT TAKE IT FOR GRANTED THAT THE SUPPLY IS OFF, EVEN IF YOU ISOLATED IT YOUR,SELF
CHECK IT !!!
In regard to Exploding metal halide lamps;
the following can cause premature explosion and or failure of lighting lamp.
Incorrect connection of fitting;
over run time ( on to long without a break);
Failing/failed ignitors
Failing/failed PFC capacitors
Failing/failed control gear
incorrct supply characteristics
dropping them on the floor
throwing them at your supervisor.
these are a few of the faults that can cause the above.
Had a bit more fun today;
Local POCO have disconnected the driveway street lighting from there supply, so we are having to route a new cable underground to feed them, lousy fittings though 90 watt low pressure sodium on 5 meter poles, yuk, hate em.!!
