I went and had a look at the siren this morning and any markings of direction or the name-plate were long gone.
So off out into the country we went (myself, the Principal Rural Fire Officer and Dick our Civil Defence liasion guy)
I called the PoCo before hand and told them what I was going to do and had the full blessing from the Chief Electrical Inspector.
I wired the siren up as I thought it should go and tested the wiring with a megger, it all checked out OK.
Took a temporary off of somebodies transformer and livened the siren controls.
I hit the start button and it sounded OK.
So I turned it off and then reversed two of the phases.
The rotation was opposite and from what I heard from under the earmuffs it made little difference.
We did get the attention of a local farmer or two though.
Dick held a Decibel meter at 5 meters away.
It peaked at 165dB(A) on the first test and 160dB(A) on the second.
So that was our trip out into the country-side.
The siren was marked with the former rotation direction inside the terminal case and will be mounted up on a pole next weekend.
