IMSA Traffic Signal III Practice Questions - IMSA Traffic Signal Senior Field Technician Level III Certification Exam

What is the primary advantage of NEMA TS2 Type 2 communication over TS2 Type 1?

Type 2 uses higher voltage power distribution Type 2 uses serial SDLC communication between the controller and field devices, eliminating parallel wiring Type 2 supports more phases simultaneously Type 2 requires fewer ground rods

Correct Answer:

Type 2 uses serial SDLC communication between the controller and field devices, eliminating parallel wiring

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