A quick note: This is not meant to bash anyone or anything, I wish only to inform and discuss the differences between OFC and CCA wire. Also note that this write up is based on my knowledge, which may or may not be factual; that's where the discussion comes in.
Now i'm sure most of you have seen this video, or a similar video:
Wire comparison with thermal camera feat. Garry Springgay at Cogent Audio Labs - YouTube
At face value, it's pretty convincing; OFC is superior to CCA. And it's true, OFC is
more conductive than CCA, thus it is able to handle more current.
However, the test done in the aforementioned video was somewhat skewed. Assuming the OFC wire was seeing its maximum rated amperage (or at least close to it), it's no wonder the less conductive CCA wire was struggling to carry the SAME amperage.
All wires are rated (or rather able) to carry a certain amount of current. Let's say for example that 8awg OFC wire is rated for 80 amps, and 8awg CCA wire is rated for 60 amps. If your amplifier pulls 80 amps, then OFC wire would obviously be the better wire choice. OR you could add another run of CCA wire
Now, if your amplifier only pulls 60 amps of current, the CCA wire will do just fine. Yes, the OFC wire is still slightly more conductive, but the difference is very minuscule, especially considering the price difference between the two.
There's a lot of rumors going around that insist that CCA wire is "bad" and causes voltage drop. This isn't necessarily true.
Consider this analogy: Wires are like water pipes, and the water flowing through them is like current.
OFC wire is a bigger pipe, which allows more water (current) to flow through it. Let's say it's capable of transferring 80 gallons per minute
CCA wire is a smaller pipe, capable of transferring 60 gallons per minute.
While the OFC can transfer more water (current) it isn't necessary when you only need to transfer 60 gallons per minute.
And even if you do need to transfer 80+ gpm you can simply add another smaller CCA pipe (aka another wire run) and you're now capable of transferring 120 gpm.
See where this is going? Hope this helps.
Team Showtime Car Audio
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.