Grounding and Bonding
The route voltage will take when a hot conductor shorts to an enclosure.
What is Ground fault current path?
This class of hazardous locations contains combustible gas or vapor.
Class 1
The typical voltage system seen in a house in the USA.
120/240 3 wire
The percentage by which a FLA of a motor is multiplied in order to find the ampacity of its conductor.
125%
The typical 4 square metal box has these size knockout holes.
1/2 and 3/4
The conductor that connects the Neutral and Ground bars together.
Main Bonding Jumper
The opening between two moving parts of a piece of equipment can cause this type of hazard.
Pinch point.
A typical higher voltage system usually found on commercial properties.
480/277
The correct sized time delay fuse of a motor circuit is found through this table.
This is the unit of electric current
What is an ampere
This part of the electrical system provides a direct connection to the earth.
What is a grounding electrode?
The system of deenergizing equipment in order to create a safe work environment.
Lock Out Tag Out
The voltage on the “high leg” of a 120/240 4 wire system.
What is 208V?
6-8 times
This type of screw is typically used to connect outlets to plaster rings
what is a 6/32
Where exposed to physical damage, a grounding electrode conductor this size or larger must be protected by conduit.
What is #6?
These characterize class 3 hazardous locations.
Fibers and Flyings
The Grounded Leg of a corner grounded Delta system.
B phase/leg
The element of a motor circuit that provides overcurrent protection to the motor windings.
The Overloads
Max number of duplex outlets on a single 20A circuit in a commercial building.
8
The size of Equipment Ground you would install for an 80A circuit.
#10
The information on potentially harmful chemicals used on a job site will be found on these.
Material Safety Data Sheets
The conductor considered the “grounded” conductor on a 120/208Y voltage system.
Neutral
A VFD part that changes the AC input voltage to DC.
Rectifier
6 mA