Thanks everyone for answering my question, but since I am going to write an GT guide(not in english, maybe someday), I need to ask more questions xD
But some question are quite stupid though...
1.Assuming an e-net with an input 32V/1A, omitting all loss.
If I have 2 LV ore washing plant(16V) + another LV machine running on this e-net, no matter how large is your energy storage, machines will run into an not enough power error, right?
If the input changes to 32V/2A, then can the machines works continuously without an error?
2.P = I x V works in GT, right?
So if loss is omitted, you can run 32(or maybe 30) ore washing plant while using an 32V/16A input, right?
3.Is the battery buffer the only block that can adjust the output amperage? So the following setup does not output 2A, right?
4.What might be the best way to find ores that height is below than 40, like lithium? Still caving or mine a tunnel, or any other ways?
1. You can run as many machines as you want on a Line, providing you can get enough current through that line.
For Example, your 2 LV Ore Washing plants and the mystery machine would need a capable of treansmitting 3 amps of LV (4x Tin cable for example).
Both your networks would not work since LV energy can only be transfered in packets of 32EU. And since you are using 3 machines, every now and then 3 amps would be needed which your power supply cant handle.
This could be done by 3 LV Steam turbines, a LV Battery Buffer with at least 4 LV batteries or something similar. A similar setup is shown here
If you want to cluster a lot of machines together you need to use cables that can handle higher currents and be able to supply enough power. For Lower tiers materials like Cobalt, Cupronickel and Electrum can handle up to 24 amps. The higher tiers have materials like Tungsten and Yttrium-Barium which can handle 48 amps. These cables also have higher specific loses.
2. Yes, thats how it works.
3. As far as I know energy is coded similar to a fluid. Energy sources generally try to "fill up" every buffer (cables, transformers and machines) and will stop outputting when everything is full.
I've never encountered a setup that would waste energy when nothing is working (apart from literally voiding energy). But it would probably better if Bloody answered that one.
Your setup should output 2amps of LV.
4. I usually use a jetpack and a mining laser to drill a hole from the surface down to bedrock. Since for an area of 3x3 chunks one mix vein is generated, this finds them pretty reliably.
You could also use the seismic prospector which would also help you to find good oil and gas sources.
I hope I got everything correct, if I didnt I hope that someone will correct me.