Is ofc wiring kits better than cca, when it come to fire resistant?

OFC (oxygen free copper) wire conducts better than CCA (copper clad aluminum) so will run cooler. It is definitely superior to CCA, that’s why it costs so much more.

Is the fuse supposed to come in the fuse holder? Or do you need to get that separate?

It comes with it. It’s included!

Would this work with a 4,000 watt amp?

That depends on the amp. What is the amp rated for on rms? Typically amps that quote 4,000 watts don’t truly produce 4,000 watts. They peak at 4,000 and only if they are bridges down to zero ohms. Also, if you are buying an amp that can push even 2-3000 watts and speakers that can handle it. Then don’t skimp on price and go with a zero gauge amp kit. But with that much power you will also need capacitors, and over sized battery, over sized alternator. And so on. So I highly doubt you are going to be truly pushing 4000 watts. Sounds like you really need to do some homework on car audio systems and learn a lot more before you buy anything.

ASIN	B07GDTN9SB
Best Sellers Rank	#180 in Car Amplifier Wiring Kits
Brand	SoundBox
Brand Name	SoundBox
Cable Type	Composite
Color	Red
Compatible Devices	Speaker
Compatible Phone Models	No Compatible Phone Models
Connector Gender	Male-to-Male
Connector Type	RCA
Customer Reviews	4.3 out of 5 stars 452 Reviews
Gauge	14.0
Indoor Outdoor Usage	Indoor, Outdoor
Item Shape	Round
Manufacturer	SoundBox
Maximum Current	150 Amps
Maximum Voltage	12 Volts (DC)
Model	TCK4
Number of Items	1
Number of Pins	2
Other Special Features of the Product	Braided
Outer Material	Copper
Special Feature	Braided
Specification Met	Likely Meets Industry Standards for Amplifier Installation Kits
UPC	859256005976
Unit Count	1.0 Count

TCK4, 4 Gauge OFC Complete 0 GA Copper Amplifier Install Wiring Kit

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