A buddy of mine wants me to install low voltage lighting for his driveway. I took all the measurements. Using a 600 watt power pack fed with an existing 120v 20a gfi outlet. The P.P. has 2 low voltage ckts. 300 watts each. From the p.p. to the first cluster of 5 lights is roughly 145 feet away.
From the p.p. to the second cluster of 5 lights is 255 feet away. I used this formula for voltage drop.
cable length X total watts divided by cable constant X 1.5
-using 10awg as my feed from the p.p. to the lights then splicing to 12awg. for the lights.
I believe there will be too much of a voltage drop for the 50watt (250 watts per l.v. circuit) halogens to work properly.
I just want to make sure I'm correct before I convince him to run a H.R. from the panel to a central location down his driveway in pvc and incur extra cost if he doesn't have to. I hope what I wrote makes sense.
Thanks in advance
Charlie
From the p.p. to the second cluster of 5 lights is 255 feet away. I used this formula for voltage drop.
cable length X total watts divided by cable constant X 1.5
-using 10awg as my feed from the p.p. to the lights then splicing to 12awg. for the lights.
I believe there will be too much of a voltage drop for the 50watt (250 watts per l.v. circuit) halogens to work properly.
I just want to make sure I'm correct before I convince him to run a H.R. from the panel to a central location down his driveway in pvc and incur extra cost if he doesn't have to. I hope what I wrote makes sense.
Thanks in advance
Charlie