Reading Electrical Blueprints Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Reading Electrical Blueprints flashcards as text
On an electrical blueprint, what does a dashed line typically represent?
Answer: A conduit run above the ceiling or hidden
Dashed lines on electrical plans commonly indicate conduit or wiring concealed above ceilings or within walls.
What is the purpose of a 'homerun' arrow on an electrical floor plan?
Answer: It indicates the circuit route back to the panelboard
A homerun arrow points toward the panelboard, indicating where that circuit's conductors return for overcurrent protection.
On a blueprint riser diagram, what information is primarily shown?
Answer: Vertical routing of electrical systems between floors
A riser diagram illustrates how electrical services and feeders travel vertically through a multistory building.
Which blueprint symbol typically represents a single-pole switch?
Answer: S with no subscript
A plain 'S' with no subscript on electrical plans represents a standard single-pole switch.
On an electrical plan, what does 'NIC' stand for?
Answer: Not In Contract
'NIC' means Not In Contract, indicating work shown on the drawing that is excluded from the current scope.
What does a circle with a cross (+) inside typically represent on an electrical reflected ceiling plan?
Answer: Recessed downlight fixture
A circle with crosshairs commonly represents a recessed downlight or can fixture on reflected ceiling plans.
When reading a panel schedule on blueprints, the 'Trip' column refers to:
Answer: The overcurrent device trip ampere rating
The 'Trip' column lists the ampere rating at which the breaker will open (trip) to protect the circuit.