can we use welding cable to hook up amp in our car?rated 200amp
There is no need for a 200 amp cable. most of the time 75 to 100 amps is more than enough. Just go to the local car audio store and pick up a amp kit. (Depending on amp size depends on price) The local Wal-Mart sales them as well. You'll spend between $25-$100 for a good amp kit. Amp Kit 1 power wire 1 ground wire 1 set of RCA for audio from sterio to amp 1 fuse.
Yes many people use welding cable as long as its sufficient size, its usually the exact same thing as car audio power wire. 200 amps for how long? The longer the run of wire, the thicker you need. What gauge is it?