Relays & Raceways
Solenoid action
What is the basic operating principal of an electromagnetic relay?
Article 430
What article covers motors, Motor circuits and Controllers
Converts AC voltage to DC
What are Diodes?
I can slowly start a motor but can't control speed
What is a Soft Starter
N.O.H.C
What is "Normally Open Held closed?
RMC
What is Rigid Metal Conduit
Article 100 covers these
What are definitions
DC Bus
What smooths out the DC voltage for the VFD?
I'm just a contactor, but need one of there to be a Starter
What is an overload
A float switch automatically starts a pump in this type of circuit
What is a 2 wire circuit
Protects the solid state relay from environmental damage
What is Epoxy Resin
Table 430.250
Where do you find Full-Load current values
Located in the D.C. bus
What is a capacitor
Overload Relay
What protects the motor?
Grounded Conductor
What is the Neutral?
EMT
Electrical Metallic Tubing
Table 310.16
Where do you find conductor ampacities
Determines the voltage output to the motor
What is Pulse Width Modulation?
Solder Pot
Trade name for the Eutectic material that melts and trips the overload relay
The conductors that provide power to large motors or your toaster at home
What is a Branch circuit
Uses an LED for switching.
What is a solid state relay?
Conductor properties, Conduit area and fill Percentage are found here
Chapter 9 (Tables 1-13)
IGBT
What converts DC back to usable sine wave
125%
How much over full load current listed on motor nameplate do you set your overloads?
A memory circuit, for example.
What is a 3 wire control circuit?