Explain this diagram for dummies

What is the unit of mobility?

25. What is the nonconductive covering around a wire?   Select one: A. DUCT BANK B. INSULATION C. RACEWAY D. CONDUCTOR

what is the largest size conductor allowed to be used with a wirenut

QUESTION 15 What is the minimum sized Rigid Metal Conduit we should use for the above wire run if it is 24 inches long? a   1" b   1 1/4" c   1 1/2" d   2"

#10 When selecting conductors, from where is the motor full - load ampere rating to be taken

Connectors marked ____ are suitable for use with aluminum, copper, or copper-clad conductors?    1. CO-ALR only   2. AL/CU only   3. UL 9   4. CO-ALR and AL/CU   What is the correct answer? Why?

Which of the following products are not suitable for bonding on the supply side of the service disconnecting means? a) Threaded hubs b) Bonding bushings with jumpers c) Standard locknuts d) Threadless connectors made up tight

1.a. Line voltage usually differs from control voltage becauseA. line voltage is usually lower.B. control voltage must be provided by a separate source.C. control voltage is usually lower.D. line voltage is always DC.1.b. A NEMA 12 enclosure can be used inA. areas with light splashing.B. dry outdoor locations.C. hazardous locations.D. caustic locations.

What is the difference between bounding and grounding?