niel wrote:
jimmy,
very nice. i am wondering about a few things though. firstly, you stated that all was grounded with one continuous ground wire, which is good, but seeing how long the roof is and there's 2 sections of pvs to be interconnected that i was wondering if the ground wire is just strung from one end of the roof to the other and then down to the ground. i ask this because ground wires should be as short as is possible. although it would be fine as is, i would've done it differently with 2 seperate ground rods each at opposite ends of the house, one of which would be the ac ground rod that should already be there. from the 2 rods i'd place at least a #6 bare copper wire underground to interconnect the 2 rods. this gives a shorter path to ground and increases the ground area available to dissipate any charges or strikes lessening the possibility of harm to you and your property inside. if you do this in the future, then put the wire at least 1ft down to minimize any possible accidental cuttings of the wire. i used a piece of plywood about 14in deep and about 6-8in in length and hammered it to make the slot into the soil for wire placement. this takes time, but is better than digging up your yard and you may need several sections of plywood to make a run that long as hammering plywood destroys the plywood.
the second thing was the ground connection to the rails. i don't remember off hand if it was you that had this brought up before or not, but i'd like to see a closer more detailed pic and description of this ground connection to the rails. if it wasn't you then please state the make of the rails.
Niel...
I'd guess my house is about 80 feet long, give or take. Here's how they did the ground: On East end of the house is the main water. They attached a large black grounding wire to the main water pipe and ran it up under the eves to the West end of the house (where all the electrical boxes are). On the West end of the house, they sunk a 6 or 7 foot copper rod straight into the ground. They attached the grounding wire from the main water pipe to this copper rod. They ALSO attached a grounding wire from the solar electrical wiring to this rod. So we are in effect double grounded (main water pipe and new copper rod), but the set of panels over the garage DO run their ground across the length of the house to the West end. (the garage panels are on the East end of the house and are only 10 feet from the main water pipe ground.) Why they didn't run a ground wire from the bank of panels over the garage to the main water pipe is beyond me. Maybe more than one ground on the circuit would mess this up?? Does that explain things suitable, or are you as confused as I'm guessing?
As for grounding the rails, I'll see what pics I have. I took a TON, but only posted a few. Do you want to see the grounding point on the rails, the panels, or what exactly?
I don't know the manufacturer of the rails right now. I'll call the installer tomorrow and see what brand they used.