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Answer is Right!
Answer is Wrong!
The correct answer is C. 3 meters.
The danger zone in 1500 DC traction is 3 meters from OHE. This is because the voltage in 1500 DC traction is high enough to cause serious injury or death if a person comes into contact with it. The danger zone is the area around the OHE where there is a risk of electric shock.
Option A is incorrect because 1 meter is not enough distance to be safe from the electric shock hazard. Option B is incorrect because 2 meters is not enough distance to be safe from the electric shock hazard. Option D is incorrect because 4 meters is more than the required distance to be safe from the electric shock hazard.