I get what your saying, although I don't know why it would matter if 4X buffer can only put out 4amps. Wires only set on fire if they get more amps than they can handle, so 4x buffer and 4x cable SHOULD be fine. That's the frustration, I feel like im getting different info from different sources...take this post for example on reddit:
https://www.reddit.com/r/feedt…_exploding_for_no_reason/
"This is correct. When you use machines, they 'request' amps/volts from connected energy sources. A 1x tin cable supports 1 amp; when you have both machines hooked up, they fill their buffers at the same time which requests 2 amps.
Amperage overload causes wire fires, and nearby fires can cause machines to explode. Other things that can cause explosions are rain, water, fire, or too high voltage.
An exploding machine can cause other machines to explode as well, though. What happened to OP most likely is an amperage overload melting his wires which started fire. The fire burned the machines which caused a chain reaction of explosions.
The steam turbine might PRODUCE 1 amp, but it fills its buffer and can output more than 1 amp."
Also id prefer to generate all my power in one spot if possible.