Ground wire question for PC

Cable Asylum

Interconnects, speaker wire, power cords. Ask the Cable Guys.

In the example of a circuit with a 20A breaker, 10awg in-wall Romex to the outlet, and a power cord using 10awg positive and neutral conductors, feeding an amplifier with an 8A fuse on the input, what should control the size of the ground wire, from a safety standpoint, not necessarily what is required for UL but rather what is the adequate size of the ground wire, should it ever be needed?

Is the controlling factor to match the in-wall requirement for a 20A circuit (i.e., 12awg), to match the pos and neutral conductors of the PC (i.e., 10awg), or to match the 15A style plug and iec on the power cord (i.e., 14awg)?

One more related question, if the circuit is dedicated to the amplifier, does the 8A inlet fuse limit the current draw on that circuit to 8A?

Thanks.

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Topic - Ground wire question for PC - mitch2 10:13:42 05/21/16 (5)

RE: Ground wire question for PC - Jon Risch 20:26:57 05/22/16 (0)

RE: Ground wire question for PC - Duster 10:55:37 05/21/16 (3)

Done - mitch2 15:01:10 05/21/16 (2)

RE: Done - Duster 15:09:54 05/21/16 (1)

RE: Done - mitch2 20:39:52 05/21/16 (0)

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