I have a question regarding the table 7-5 on encumbrance effects. My question is what is the MAX DEX +3 for Medium loads used for? Does this mean this is the max amount of modifiers I can have in DEX when using this type of armour?
If you are carrying enough gear to be mediumly encumbered, then you cannot apply more than +3 of your Dex bonus to your AC, similar to the restrictive nature of armors. While weighed down, you can't move as nimbly.