IMSA Bench Tech II Practice Questions - IMSA Traffic Signal Bench Technician Level II Certification Exam

What is the fundamental wiring difference between a NEMA TS1 cabinet and a NEMA TS2 Type 1 cabinet?

TS2 Type 1 replaces the MS-A/B/C parallel wiring with an SDLC serial data bus TS2 Type 1 uses higher field-output voltage than TS1 TS2 Type 1 eliminates the conflict monitor and load switches TS2 Type 1 is wired with single-conductor 600 V cables instead of multi-conductor harnesses

Correct Answer:

TS2 Type 1 replaces the MS-A/B/C parallel wiring with an SDLC serial data bus

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