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When you work with normal AC power, it is considered unsafe practice to use parallel wires to share load in a circuit. Reason: one might get decoupled somehow,
by superjan 2y ago
When you work with normal AC power, it is considered unsafe practice to use parallel wires to share load in a circuit. Reason: one might get decoupled somehow, you don’t notice, and when fully loaded the heat causes a fire risk. This problem sounds similar. A single fat wire is the easiest, but I guess it’s not that simple.
- masklinn 2y ago> This problem sounds similar. A single fat wire is the easiest, but I guess it’s not that simple. The problem is the 12V architecture, so the only way you can ramp power up is to increase amperage, and sending 50A over a single wire would probably require 8AWG. That's... really not reasonable for inside a PC case. Then again, burning down your house is somewhat unreasonable too.
- quickthrowman 2y ago> When you work with normal AC power, it is considered unsafe practice to use parallel wires to share load in a circuit. The NEC permits using conductors #1/0AWG or larger for parallel runs, it doesn’t forbid it entirely.
- DannyBee 2y agoYeah. I have 800 amp service which is basically always done with parallel 400 mcm or 500 mcm (depending on where it is coming from, since POCO doesn't have to follow NEC) Within conduit, there is basically no other option. In free air there are options (750 mcm, etc). Even if there were, you could not pay me to try to fish 750 mcm through conduit or bend it
- quickthrowman 2y agoYeah, (2) sets of 4”C 4#500MCM #1/0G (copper) is typical for an 800A service. My electricians feel the same way as you do about anything over #500, usually for 400A we parallel #4/0 instead of one set of #500.