Jack Study Guide Flashcards
(57 cards)
Ampacity
max current w/o exceeding temp rating in a conductor
Conductor
Current Carrying material
Circuit Load
load in amps on the circuit
Equipment Rating
Max current in a equipment that will cause heat damage
Overcurrent
any current in excess of the rated amount of the equipment
Voltage Drop
current moves along conductor, heats up, heat is lost power, causes voltage drop
Facility electrical panel
A, B, and C are the phases and they want the load current amps to be equal
Electrical Grounding
provide a low impedence path, results in a high level fault current that will trip an OCPD, lightning protection, and same voltage everywhere
1/10th of an amp will_________a person
kill
Grounded
Connected to the earth, this creates a path for fault current to safely discharge
Bonded
connected to establish electrical continuity and conductivity between, ensures fault current has a low-impedance path
Grounding Electrode
A conducting object(typically a ground rod) driven into the earth. The wire from panel to ground rod.
Equipment Grounding Conductor (EGC)
The conductive path (that connects non-current carrying metal parts)
Main bonding jumper
where the neutral and ground connect
Seperatley Derived System
An electrical source (like transformers or generators) has no direct electrical connection to the supply source.
Unacceptable bonding
connecting neutral and ground wires together after the main service panel
Transformer
step up or down voltage
Panels
direct electricty
Disconnects
something that breaks a circuit (like a breaker)
Service
Service transformers to main distribution panel
Feeder
panel to panel
Branch
panel to loads
Potable Water
drinkable
Grey Water
wash hands
