Question-and-Answer Resource for the Building Energy Modeling Community
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All Space Loads derive from the same parent classes, see the inheritance diagram for People, but here's the basic idea:
People > SpaceLoadInstance > SpaceLoad > SpaceItem > (ModeObject > etc )
As a result, it's the SpaceLoadInstance that references directly either the Space or SpaceType.
SpaceLoadInstances instantiate a given SpaceLoadDefinition in a Space or SpaceType by defining a multiplier and a schedule
SpaceType and Spaces both have convenience functions to return all "People" objects that reference it (and all other loads).
What this means is that when you get a given SpaceType, you can rest assured that you can modify the SpaceLoadInstance object (multiplier and Schedule) without affecting other SpaceTypes/Spaces. If you start touching the SpaceLoadDefinition, then you should probably start by counting how many time it's used, to see if you should clone it before you modify it.
