Power budget
Also: load budget
A table of expected electrical loads and the margins assigned to their shared supply.
A defensible budget separates voltage rails, steady and credible peak current, duty, conversion loss, startup, wiring drop, and thermal derating.
Example Loads totaling 1.02 A with 30% margin require assessment at 1.326 A.
Common misconception Passing a summed current check does not validate transients, connectors, cooling, or protection.