question about GPU plugs

[holyseal]

Hello,
Could someone provide me with the explanation as to why on a GPU plug there are 2 anti flash pins for 3 phase AC current while there is only one for DC current ?
Thanks :)

[winglit]

Because the ground power breaker is controlled with DC therefore you need a separate DC interlock supply for the AC plug, hence the two pins. Power goes in, power comes out!

[holyseal]

seems obvious now :) thx for the answer :)