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A grid-tie inverter (GTI) or synchronous inverter is a special type of power inverter that converts direct current (DC) electricity into alternating current (AC) and feeds it into an existing electrical grid.
Originally posted by jonnywhite
reply to post by Maxmars
USA is much more cautious how it does these things. It's not rushing. I think Germany needs to be more careful. I think overall quality and freedom in the german energy industry will suffer.
You see greed in the US, I see irresponsible behavior by the german industry. I also think they're taking a big kick in the ***** just to say that they have X amount of solar capacity.
You also have to consider that what works in Germany probably won't work in the US. This is a big country and our lifestyles are bigger and people have different expectations about living.
I'm always skeptical about people who think that what works elsewhere works anywhere. Like gun control for example. It's sure easy for dictatorships and communists to implement. But the US values its freedoms more than they do. So what works for them won't work for the US.edit on 26-12-2012 by jonnywhite because: (no reason given)
Originally posted by Sandcastler
reply to post by BathtubGinSmuggler
Yes, good point. Think of how many solar arrays you could put in the western US? You can draw a line from the bottom tip of Texas up through the middle of North Dakota. Everything west of that line, excluding the high Rockies and Pacific Northwest, is prime territory for solar collection. We have relatively barren areas as big as some European countries where we could generate a ton of solar power with very little impact to humans or animals.
Originally posted by ohhwataloser
reply to post by DarkSecret
You have many of your electricity facts wrong. DC is only more dangerous because it does not hit a zero point, so it is harder to let go if you get hung up on it. However it takes much more voltage for a dc system to kill you compared to a AC. a 120v AC system actually peaks at 170 volts, the average is 120. DC is just what it is, there is no sine wave. Wire insulation is purely based off the voltage and the environment, DC or AC isn't even a thought. Your car moves and bounces around, you can't have paper thin insulation or it will wear through, but it can handle the voltage. At least in michigan you need to be licensed journeyman to preform any electrical work (unless it's your own property), but no special licence is required for solar installations beyond that.
The reason we use AC is because all you need to do to change voltage is a transformer, I can go from high voltage power on a pole, to your 120 house voltage in one simple cheap efficient step.
As an electrician myself, obviously I don't care about any install cost, as I can do it myself. I just look at gov incentives for myself and the current price and 1.20 per watt isn't going to pay itself back in my household for many many years. Its not worth the investment for me yet, I don't know what numbers people are looking at that can have these things installed for 4 bucks a watt and think they are getting a return on investment in the next 15 years. By that time the batteries need replacing twice (more cost), parts are past warranty and you dump more money into the system.
SHOCK HAZARD: As defined in American National Standard, C39.5, Safety Requirements for Electrical & Electronic Measuring & Controlling Instrumentation: A shock hazard shall be considered to exist at any part involving a potential in excess of 30 volts RMS (sine wave) or 42.4 volts DC or peak and where a leakage current from that part to ground exceeds 0.5 milliampere, when measured with an appropriate measuring instrument defined in Section 11.6.1 of ANSI C39.5.