Think You Speak Electrician? Prove It!In a 3-phase 4-wire system, "PEN conductor" refers to:27%Next Correct Incorrect PEN combines Protective Earth (PE) and Neutral (N) functions in TN-C systems. In a 3-phase 4-wire system, "PEN conductor" refers to: Neutral conductor only Phase conductor only Dedicated grounding conductor Combined protective earth and neutral (PEN) 27%
