jerjwillelec
Senior Member
- Location
- Nevada, IA
- Occupation
- Master Electrician
The city municipality I do work for owns a couple acre sports park with walking/running trails throughout. There are about 50 lights serving these trails. 175 watt MH, approximately 10 years old, fed and controlled from 4 different sources, most at 277 volt...some might be 208, I'd have to check. They run from dusk until around midnight and again from 4:00ish until dawn everyday. Here recently, within the last two years, they are replacing lamps like none other. They just replaced them all last October and 90%+ need replaced again. Any ideas based on your experience as to why this is? I checked random poles and the voltage serving the ballast is 285+/- volt and ballast to lamp is 280 volt. It can get very windy out there and was wondering if that may have an effect on a gas lamp (didn't think so but I'm out of ideas). Any ideas?