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Should the PFC be considered when calculating cable sizes??

Why do you ask and what do you think.

Just something someone said this week at work, Just wanted to make sure i wasnt going insane!!

Im not the sharpest tool in the work bag but id just like to confirm it!

What did they say.

Okay consider a fuse, under fault conditions whether fault or short circuit sufficient current is induced to rupture the fuse and cause disconnection, for fault protection this is known as automatic disconnection of supply (ADS). When a fault is occurring through a circuit whether by PFC or PSCC you do not want the conductor to act in the way the fuse does because you want the circuit to continue to be safe for continued use. Under fault conditions the conductor will undergo thermal stress and in the case of the fuse which is a conductor it ruptures for safety reasons but the circuit conductors should be of sufficient csa to prevent undue damage under fault conditions.