4 kV Roadway/Area Lighting

[EmagSamurai]

I need to power a 120/240 1P, 125 kVA, load that is approximately 1,000' from my 4 kV source. I also need roadway and area lighting between those two points. On the surface it seems like I would be best served by carrying 4 kV overhead to my load to keep my cable size relatively small. The problem I have is I can't find any roadway/area lights that operate at 4 kV. Am I looking for something that doesn't exist? Are there other (simple) options for powering lights along this stretch other than pulling a separate 120/240 V feed?

Thanks in advance.

 

[bwat]

How many points are we talking along then length that need lights? Every pole? If it's not a lot, a small pole mount transformer wherever lights are needed might be easier and cheaper than running two feeds. Never priced them out though for pole mount MV, so I could be wrong.

 

[zbang]

You won't find 4kv lights. However, what's the roadway lighting load? For only 1000', just run 240v along there and tie the lights onto that. Or run 277v if you have that.

 

[sameguy]

Airport approach lighting is 4K/480v so the xfrmr are out there.

 

[zbang]

But at aviation prices

 

[sameguy]

1500 Watt Isolation Transformer for Airport Approach Lighting | FAA L-830 - Flight Light Inc.

1500 Watt Isolation Transformer for Airport Approach Lighting | FAA L-830 - L830, L 830

flightlight.com

A starting point, happy hunting!

 

[EmagSamurai]

Thanks for the help! I figured this was going to be the case. Though I hadn't considered looking through an aviation catalog).

Off hand I'd guess we will need about 10 lights along this run. But I could be off by 50%. I haven't looked at how much area these lights are capable of illuminating, yet.