I have been led to believe this makes a difference on the PTO properly engaging.........
CCA is 'Cold Cranking Amps', or the
power the battery is able to unleash for the highest demand job... cranking the engine.
Now, obviously there is a surge of electrical power needed for any PTO clutch to engage, but this surge takes only milli-seconds to satisfy. Then the requirement drops back to the "continuous ampere rating", which is a very moderate number.
Look at the gauge of wire going to the PTO clutch and you can see this for yourself. If CCA was a real factor in clutch operation, then you might see #4 or #6 AWG electrical cable going to the clutch, just like you see on the starter motor. But you don't.
All wires within the harness are sized by the Current they are required to carry. So if you don't have gargantuan wires going to the clutch, then you don't have huge ampere requirements. So your internet folklore has a bit of truth (there is a current surge), but it's simply not that high.
Hope this helps.
