That's because the default rule is not called encumbrance, it's called carrying capacity. From the Compendium : Lifting and Carrying Your Strength score determines the amount of weight you can bear. The following terms define what you can lift or carry. Carrying Capacity . Your carrying capacity is your Strength score multiplied by 15. This is the weight (in pounds) that you can carry, which is high enough that most characters don’t usually have to worry about it. And then this is the encumbrance entry: Variant: Encumbrance The rules for lifting and carrying are intentionally simple. Here is a variant if you are looking for more detailed rules for determining how a character is hindered by the weight of Equipment . When you use this variant, ignore the Strength column of the Armor table. If you carry weight in excess of 5 times your Strength score, you are encumbered , which means your speed drops by 10 feet. If you carry weight in excess of 10 times your Strength score, up to your maximum carrying capacity, you are instead heavily encumbered , which means your speed drops by 20 feet and you have disadvantage on ability checks, Attack rolls, and saving throws that use Strength, Dexterity, or Constitution.