Tier System
The most recent version of IC² is V2.8.<html>.
Items and machines in IndustrialCraft 2 are grouped into tiers based on the maximum EU it can output or receive per tick (EU/t).
Powering a machine or storage unit with too much EU/t will result in the machine exploding. For example, trying to power a 
Macerator (tier 1) with 128 EU/t (tier 2) will result in the Macerator exploding, destroying it.
Transformer Upgrades can be used to increase the power tier of a machine by power tier per upgrade item.
Tier 1 - Low Voltage[edit]
Tier 1 machines can accept or output low voltage, or 0-32 EU. Most basic machines are tier 1.
Tier 1 Items
Tin Cable
BatBox (Chargepad)
LV Transformer (stepping down)
RE Battery (
Charging)
Macerator
Compressor
Extractor
Electric Furnace
Metal Former
Recycler- etc.
Tier 2 - Medium Voltage[edit]
Tier 2 machines can accept or output medium voltage, or 33-128 EU.
Tier 2 Items
Copper Cable
CESU- LV Transformer (stepping up)
MV Transformer (stepping down)
Advanced RE Battery (
Charging)
Tesla Coil
Tier 3 - High Voltage[edit]
Tier 3 machines can accept or output high voltage, or 129-512 EU.
Tier 3 Items
Gold Cable
MFE- MV Transformer (stepping up)
HV Transformer (stepping down)
Energy Crystal (
Charging)
Terraformer
Mass Fabricator
NanoSuit
Tier 4 - Extreme Voltage[edit]
Tier 4 machines can accept or output extreme voltage, or 513-2048 EU.
Tier 4 Items
HV Cable
MFSU- HV Transformer (stepping up)
EV Transformer (stepping down)
Lapotron Crystal (
Charging)
QuantumSuit
Tier 5 - Insane Voltage[edit]
Tier 5 machines can accept or output "insane" voltage, or 2049-8192 EU.
Tier 5 Items
Glass Fibre Cable- EV Transformer (stepping up)
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