That is NOT why..
A dual rectifier which these alts have as well just prolong the potential failure of overloading an alternator.
The physical protection of cutting back output once the rectifier gets too hot is fullproof.
If I had a 250a alt with 540a of rectifier diodes.. ok..
But if I am pulling 1000a of current, dual rectifier isnt going to fix anything..
It just passes the abuse over more diodes prolonging the alternator from dying until the dual rectifier gets too hot and fails.
I only run dc xp because I can only run 1 alt on my car.
2 setups ago, I used ro run 21000w worth of amps on 1 alt..
This time I will be running over 50000w on 1 alt.
I will never have an issue pulling several thousand amps because of onboard protection.