Electrical Control Drawings Flashcards
What do block diagrams do?
provide info about the system and location of each component without going into great detail
Are there more than one type of electrical drawing?
yes
What are the four types of electrical drawings?
interconnection, block, wiring, schematic
What does a wiring diagram do?
show connection of devices with respect to physical location
What is another name for a schematic diagram?
ladder
What does a schematic diagram show?
sequence of operations
What do wiring diagrams show?
all of the wires carried between electrical components
Should all lines on a schematic be vertical or horizontal?
yes
On a schematic, ____ are on the left and _____ are on the right
control devices, loads
Are the symbols for a circuit br eaker and a disconnect interchangable?
no
Do normally open contacts open or close when the relay is energized?
close
Contacts are always drawn as if the coil is _____
de-energized
In a schematic diagram, all relay coils are identified by a means of _____ or _____
letter or number
