EIAT and NEIEP Test Print Reading and Blueprints 2 — Questions and Answers
Question 1: What type of electrical drawing shows the interconnection of components using standardized symbols without regard to physical location?
- Floor plan
- Schematic diagram (Correct answer)
- Pictorial diagram
- Site plan
Correct answer: Schematic diagram
A schematic diagram uses standardized symbols to show electrical connections and functions without representing the physical layout.
Question 2: On a panel schedule, the 'kVA' or 'VA' column refers to:
- Voltage ampacity of breakers
- The volt-ampere load connected to each circuit (Correct answer)
- Number of conductors per circuit
- Knockout locations
Correct answer: The volt-ampere load connected to each circuit
The VA (volt-ampere) column in a panel schedule indicates the calculated or connected load for each circuit.
Question 3: A 'single-line diagram' (one-line diagram) is used to show:
- One wire at a time in conduit
- The overall power distribution system using single lines to represent three-phase conductors (Correct answer)
- A single circuit from panel to device
- The grounding conductor path only
Correct answer: The overall power distribution system using single lines to represent three-phase conductors
A single-line diagram uses one line to represent all conductors of a power system, showing the overall layout of generation, distribution, and protection.
Question 4: What does 'NTS' written on a drawing mean?
- No Terminal Strip
- Not To Scale (Correct answer)
- New Transformer Station
- Neutral to Single
Correct answer: Not To Scale
NTS (Not To Scale) is a notation indicating that the drawing dimensions cannot be measured proportionally from the printed drawing.
Question 5: On a mechanical or electrical plan, what does 'EWC' typically stand for?
- Electrical Wall Connection
- Electric Water Cooler (Correct answer)
- External Wire Connector
- Earthed Wire Circuit
Correct answer: Electric Water Cooler
EWC stands for Electric Water Cooler, a common abbreviation on electrical plans for designating drinking fountain/water cooler circuits.
Question 6: Revision clouds on a blueprint indicate:
- Areas with poor reception for wireless systems
- Sections of the drawing that have been changed since the last issued version (Correct answer)
- Weather protection requirements
- Locations of HVAC equipment
Correct answer: Sections of the drawing that have been changed since the last issued version
Revision clouds are drawn around modified areas of a blueprint to highlight what has changed between drawing revisions.
EIAT and NEIEP Test Print Reading and Blueprints 2
What type of electrical drawing shows the interconnection of components using standardized symbols without regard to physical location?