A three phase lighting dimmer DSC_3665
Seems to be a run of faulty 3 phase powered stage equipment of late. This unit is capable of controlling 12 individual channels of 240 volts at 10A or 2400 watts. Total loading 120 amps!
This unit belongs to a local high school and was recently teted and tagged as being safe. In the first photo you can clearly see one of the Active wires is touching the chassis.....the fault description was "unit trips circuit breakers"...Geez I wonder why.
For folks not familiar with Australian electrical systems, our standard outlets are 240 volts. Most residences have 3 phase power, so 3x240 volts or 415 volts phase to phase.
I went over this unit with a fine tooth comb as school aged kids will be using it. Its great that the testing and tagging policies have become mandatory but the caliber of people performing the tests leave a lot to be desired.
A three phase lighting dimmer DSC_3665
Seems to be a run of faulty 3 phase powered stage equipment of late. This unit is capable of controlling 12 individual channels of 240 volts at 10A or 2400 watts. Total loading 120 amps!
This unit belongs to a local high school and was recently teted and tagged as being safe. In the first photo you can clearly see one of the Active wires is touching the chassis.....the fault description was "unit trips circuit breakers"...Geez I wonder why.
For folks not familiar with Australian electrical systems, our standard outlets are 240 volts. Most residences have 3 phase power, so 3x240 volts or 415 volts phase to phase.
I went over this unit with a fine tooth comb as school aged kids will be using it. Its great that the testing and tagging policies have become mandatory but the caliber of people performing the tests leave a lot to be desired.