Large Geothermal Mistake... Maybe?

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Delorey11

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Jul 29, 2019
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Hey guys! I'm having some issues with my private FTB Unleashed server. I have 64 geothermal generators, all being fed a constant input of lava using liquiducts and drawing lava from a massive lava pool in the nether (Which is still currently drawing and on top of that I have two max sized Iron Tanks full of Lava on back storage in case I need to relocate). They are all hooked together with 4x HV cables, which come together on a single line, feed into a MV-Transformer, and pump through a long chain of MFEs all connected with 2 Fibre Cables between each to prevent lag. At the end of all this, there are 4 MFSUs, which feed into a matter converter (the machine for UU).

Up until recently, I've been fine. Then I decided to take a look into optimizing my system because even with all this, the MFSUs are still being drained when the UU machine comes on. This seemed quite odd to me, and I quickly discovered why.

Despite having all 64 Geothermals hooked to lava, and connected to the line into the grid, only a handful of them EVER operate, meaning that out of 64, at any given time, about 5 of them are on, and this ups to about 12 when the MFSUs come on. I cant figure out what's preventing them from coming on for the life of me.

Anyone got an idea?

Note: The pipe are 100% full of lava all the time, and theres almost 0 draw from the tanks.
 
Geothermals only trigger when they need to, also you should replace the HV cable as it has high power loss.
 
If no machines that are directly connected are using power, and the storage units (the mfsu's are full) they won't be using it. 64 Geothermal's output 1280 EU/tick. If you are only using say 100 EU/tick, then only 4-5 are gonna come on. If you are using 1280 eu/tick, then they should all come on. How many come on is gonna be directly related to your consumption.

Also, if they are on the same line, I'd use a higher rated cable. The cable needs to be able to carry 1280 eu.
 
What should I use? whats above the 4x HV? Also, with the Mass Converter turned on, amongst others, shouldn't they all come on? I have several basic machines(Elec furnaces, Macerators, Compressors, etc.) which run a good bit of the time, along with the Mass Converter, I figured I would need a huge input to make this work without losing much power?
 
Delorey11 said:
What should I use? whats above the 4x HV? Also, with the Mass Converter turned on, amongst others, shouldn't they all come on? I have several basic machines(Elec furnaces, Macerators, Compressors, etc.) which run a good bit of the time, along with the Mass Converter, I figured I would need a huge input to make this work without losing much power?
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Use glass fibre
 
Can glass fibre cables handle the EU right to the System? I thought they maxed out at around MV? (Sorry, I'm great at Vanila, but FTB is new to me. Ironically, I'm an electrician, and cant figure this stuff out XD)

Edit: Just found on the wiki that Glass Fibre will only handle up to 512(HV)... What else could I use?
 
Delorey11 said:
Can glass fibre cables handle the EU right to the System? I thought they maxed out at around MV? (Sorry, I'm great at Vanila, but FTB is new to me. Ironically, I'm an electrician, and cant figure this stuff out XD)

Edit: Just found on the wiki that Glass Fibre will only handle up to 512(HV)... What else could I use?
Click to expand...

The wiki is incorrect. That is for the normal version. Most, if not all of the mod packs use IC2 experimental builds. Things are way different from on that wiki. For example the cable progression is tin > copper > gold > hv > ev ( 32 > 128 > 512 > 2048 > 8192).

MFSU's, hold 40 million (40,000,000) EU, and output at 2048.

I guess it would help to know what version of IC2 you are on. If it's Exp, what I've said is true. If it's normal IC2, then you are unfortunately stuck with the cables you are using. The only difference is, in your (suspected version of ic2) all those geothermals will only output 20 eu/tick into one line. On experimental, the effect is cumulative, so you'd need something for the total current. If that makes any sense.
 
Well, what I've got is 510 EU on the cumulative line that connects them all to the storage area, but the different groups are going at different rates. The 64 are divided into four sections of 16. One section is outputting 320 EU/t (According to EU-Reader), one is around 151 EU, and the other two are balanced at about 20, which adds up. Also, I have no idea what version I'm running, but I do know I'm on MC Version 1.5.2
 
he has unleashed, so glass fibre > all
the voltage in unleashed isn't as one would expect, the sum of the outputs of the generators but simply a "maximum voltage" which means, if you have 10000000000 lava generators ( 24 EU/T each if i recall well) all feeding into a single glass fibre cable ( 512 max) it wont explode, since the generators output 24 (24< 512)
if you attach a generator which outputs, say 600(600>512), just a single one, the cables do boom
 
I see. So at the end of the line, I should read the cummulative 510 EU/T, but even if, for some reason, I exceeded that, they wouldn't break due to the small output of the generators?

^ that seems somewhat illogical, but thats what I took out of the above comment?
 
nope, you have 60 generators which output 24 eu each, since they all output 24 which is less that 512, cables don't explode, your read less energy because HV cables loose much energy per block
 
Delorey11 said:
Hey guys! I'm having some issues with my private FTB Unleashed server. I have 64 geothermal generators, all being fed a constant input of lava using liquiducts and drawing lava from a massive lava pool in the nether (Which is still currently drawing and on top of that I have two max sized Iron Tanks full of Lava on back storage in case I need to relocate). They are all hooked together with 4x HV cables, which come together on a single line, feed into a MV-Transformer, and pu....
Click to expand...

There's your problem- transformers have a limited throughput, MV can only do 512Eu/t at the most.
 
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