EEUT1130 FQ3 A Quiz

Part of the electrical plan that shows the list of circuits, descriptions, VA ratings, wire sizes, and CB rating to be used:

• Load Schedule

• Riser Diagram

• General Notes

If wire ampacity is 70A, and full load current is 50A, what is the appropriate Circuit Breaker size?

• 67A

• 70A

• 80A

Main disadvantage of using fuses over circuit breakers:

• Higher cost

• Physical size

• One-time use only

What is usually the main source of electricity for a building?

• Back-up generator set

• Batteries

• Local electrical utility

Which of the following is not a basic component of an electrical system?

• Conductors

• Load devices

• Circuit breakers

Which of the following details would you find on a Riser/One-Line Diagram?

• HVAC system layout

• Loads, feeder sizes, motor loads

• Building floor plan and exits

When calculating the ampere load for a dwelling unit, what nominal voltage value is used?

• 120 V

• 230 V

• 240 V

In a dwelling unit, the standard VA rating per outlet is:

• 120

• 180

• 360

Circuit breaker can have a rating greater than wire ampacity:

• Yes, but considered overdesign

• No, it must be less or equal to wire ampacity

• No, if load is equal to wire ampacity

Suppose instead of using 8.00 mm², 14 mm² is used:

• Allowed, but overdesign

• Not allowed, dangerous

• Not allowed, but a thinner wire can be used