Greetings on a (mostly) peaseful Sunday morning.
I’m going to jump in here as a highly enthusiastic premium power delivery supporter. This includes, but not limited to, beefy cables from the electrical panel, premium (audiophile) power cords, upgraded wall outlets, well-designed power conditioner/surge/distribution centers and, do I dare drop the "F-bomb" here??? ....... F-U-S-E-S!!! Yes, I’m guity of all the above. I even had the audacity to tear my power center apart, rip out all the OEM wiring and installed audiophile cables and audiophile outlets. Yes, admittedly, I even spent real money on the 7 audiophile fuses installed in my system. I’m hopeless.
So, it’s probably a good time to revisit the quote of the day:
"The most annoying thing about this forum is the volume of nonsense spouted."
Prepared to be annoyed.
To address the OP’s question directly, I would first access the quality of the power conditioner AND it’s attached power cable. It is not uncommon for those devices to ship with attached power cords that aren’t, uh, very good.
I would suggest, if possible, bypass your power center and plug your basic components directly into the wall outset. Depending on the complexity of your system and number of outlets available, this may not be possible. This is a good way to determine the effects (positive or negative) of the power center on the sonics of your system. I’d also suggest that you spend some time picking the right power cables. And, audition a power center with removable PC and install your newly-discovered favorite power cable from the wall outlet TO the power center. Of, if you love your power center, consider hacking the unit by internally wiring your (newly discovered) power cable.
Listening tests will determine the quality of the sum of ALL things used throughout your power delivery system. My guess is the importance of the gauge will become a non-factor. You ears will have pointed you in the right direction.