Which conductor size is designated as the bus conductor in this standard?

• A. #1 AWG
• B. #2 AWG
• C. #3 AWG
• D. #4 AWG

Answer: (B)

In this standard, the bus conductor is the main power path inside the equipment cabinet that feeds the distribution bus and all connected circuits. It must be sized to carry the expected maximum load with an acceptable voltage drop and to fit the lugs and hardware used in Motorola shelter equipment. The designated size is #2 AWG because it provides enough current-carrying capacity for typical site needs while remaining compatible with the common hardware and connectors specified by the standard. A larger size would be more difficult to install and may not be necessary for the standard’s anticipated loads, while a smaller size could undersize the path and risk overheating or excessive voltage drop. So, #2 AWG is chosen as the appropriate bus conductor size.