What size cable, 100 amp sub panel?

[MrWhite]

What size cable is used to connect a residential 100amp sub panel from an existing 100amp panel, 75 feet away?

All Breakers will be removed from the main panel and move to the new subpanel.

 

[Megawatt]

What size cable is used to connect a residential 100amp sub panel from an existing 100amp panel, 75 feet away?

All Breakers will be removed from the main panel and move to the new subpanel.

The wire size is #3 copper for a 100 amp service or 1/0 aluminum.