What are some required and recommended uses for ground-fault protection devices?
What will be an ideal response?
The NEC specifies that ground-fault protection shall be provided on certain electrical equipment. In addition, the NEC lists several other applications as follows for this type of protective device:Required
| ? | for 1000 ampere or larger, solidly grounded wye service of more than 150 volts to ground but less than 600 volts phase to phase |
| ? | for service devices, ground-fault protection set to operate at a maximum of 1000 amperes |
| ? | for feeder and branch-circuit protection |
| ? | for service of less than 1000 amperes where it is solidly grounded and for more than 150 volts to ground not exceeding 600 volts phase to phase |
| ? | provisions of this section of the Code shall not apply in a continuous industrial process where a nonorderly shutdown will introduce or increase hazards. |
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For a building project, the types and quality of materials, methods of construction, and location of the structure are included in the _____.
a. foundation plan b. detail drawings c. section views d. specifications
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Polygons are figures with more than ____ angles.
A. two B. three C. four D. five