what amp fuses do i need for my amp?

[Vital 10+ year member]

0g going from the battery to the fuse holder that also splits in into two 4g wires. Each of 4g then goes directly? into an amp. Which fuses do i need in that fuse holder/distro?

AMP#1

Polk Audio PA1200.1

800 watts RMS x 1 at 2 ohms (which is what it does right now)

1,200 watts RMS x 1 at 1 ohm

fuse rating: 40A x 3 (so 120A alltogether on the amp)

AMP#2

Polk Audio PA500.4

90 watts RMS x 4 at 4 ohms (which is what it does right now)

125 watts RMS x 4 at 2 ohms

fuse rating: 40A x 2 (so 80A alltogether on the amp)

Do i just match amp's fuses?? Go a little lower? higher??

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