Mike, We still have vertical recticulation in Auckland in some areas, i can make some pics if you are interested.

The council put up 37 new sets of these 250 Watt Metal halide lamps, about 2 months ago to light pedestrian crossings in the West Auckland area.
And they are bright allright !

As we had intermittand tripping on one of our streetlight pilots, we found a crossed polarity near a school which had the pole live at ± 200 Volts to earth.
The contractor, who installed those lamps, made a non fused joint to our OH pilot system, then breach joint to get power to both sides of the road.
We got the network safety auditors out, discussed the issue and isolated all circuits concerned as a matter of safety.

Now all 37 Ped. xings are out and the contractor is kicked of the Network who wasn't even warranted to do the work.
Also coc's and paperwork were signed off without checking polarity and loop impedance.

Interesting what is gonna happen in the future with these lights. I keep you posted.



The product of rotation, excitation and flux produces electricty.