Which factor is accounted for in the PoE budget besides PSE capability?

• A. Cable color
• B. Cable losses along the copper path
• C. Number of cables
• D. Temperature

Answer: (B)

The main idea is that a PoE budget includes not only what the power sourcing equipment can provide, but also the losses that occur as power travels through the copper cabling to the device. Those losses come from the resistance of the copper conductors and terminations, which cause a voltage drop and reduce the power reaching the powered device. The amount of loss depends on cable length and gauge, so longer runs or thinner cables eat more power. So, when you compute the PoE budget, you account for these copper path losses to ensure the powered device still gets the required power. Cable color and the number of cables don’t affect the electrical budget, and temperature can affect resistance but is usually treated separately as a derating factor rather than a core budget component.