ECN Forum Forums General Topics of the Trade General Discussion Area Low voltage light and voltage drop

Hi Guys,
I've been asked by a landscape contractor to provide power for a cord connected transformer and some low voltae lights. When I arrived on site it was obiouse that thier 170'(1st light at 92')run and #12 wire would not cut it. I've run some VD calcs and have come to the conclusion that the transformer needs to be within 10' to 20', however, I don't know what the axceptable VD on a 12v lighting circuit could be?

7 lights @ 35w each
12v transformer w/two poles 350w each
70' one way length from 1st light to last

Could some give me some advice on this please?

Thanks Sam

Will someone please erase this post for me?

Sam