ABBREVIATIONS
FLA
WHAT IS FULL LOAD AMPS
A FORCE THAT PRODUCES OR TENDS TO PRODUCE ROTATION
WHAT IS TORQUE?
SQUIRREL CAGE INDUCTION MOTOR
WOUND ROTOR TYPE MOTOR
SYNCHRONOUS MOTOR
WHAT ARE 3 BASIC TYPES OF MOTORS
THIS ARTICLE PERTAINS TO MOTORS
WHAT IS NEC ARTICLE 430
16AMPS ON A 20 AMP CIRCUIT
WHAT IS THE CAPACITY IN AMPS THE LOAD FOR A 20 AMP CIRCUIT
MCP
MOTOR CIRCUIT PROTECTOR
CAN BE CLASSIFIED AS AN OVERCURRENT THAT EXCEEDS THE FULL NORMAL FULL LOAD CURRENT OF A CIRCUIT
WHAT IS A OVERLOAD
THESE ARE THE 3 FACTORS THAT CAUSE THE MAGNETIC FIEL TO ROTATE
wHAT ARE THE VOLTAGES ARE 120DEGREES OUT OF PHASE WITH EACH OTHER
THE THREE VOLTAGES CHANGES POLARITY AT REGULAR INTERVALS
THE STATOR WINDINGS AROUND THE INSIDE OF THE MOTOR ARE ARRANGED SPECIFICALLY TO INDUCE ROTATION
NEC TABLE 430-250
WHAT IS THE CHART FOR FULL LOAD THREE PHASE A/C MOTORS
THIS NEC ARTICLE DEALS WITH MOTOR FUEL DISPENSING FACILITIES
WHAT IS ARTICLE 514
AIR CONDITIONING
WHAT IS A/C
THESE ARE POINT AT WHICH AN ELECTRICAL COMPONENT MAY BE CONNECTED TO ANOTHER COMPONENT
WHAT IS A TERMINAL
THESE THREE ITEMS ARE NEEDED TO PROVIDE MOTOR OVERLOAD PROTECTION
WHAT IS
OVERLOAD RELAYS
FUSES
CIRCUIT BREAKERS
THIS TABLE TELLS YOU FLC IN AMPS ON A SINGLE PHASE MOTOR
WHAT IS NEC TBLE 430-248
WHAT IS 3PHASE IMBALANCE, PHASE TO PHASE, PHASE TO GROUND,
WHAT ARE SOME COMMON TYPES OF FAULTS IN A POWER SYSTEM
26306-20 PG 14 SECTION 1.4.4
NEC
WHAT IS THE NATIONAL ELECTRIAL CODE
A NON AUTOMATIC, MANUALLY OPERATED DEVICE DESIGNED TO OPEN A CURRENT CARRING CIRCUIT WITHOUT INJURY TI ITSELF
WHAT IS A CIRCUIT INTERUPTER
THIS IS THE NUMBER OF HERTZ WE USE IN THE USA ON A WIDESPREAD BASIS
WHAT IS 60HERTZ
THIS ARTICLE IN THE NEC PERTAINS TO A/C UNITS AND REFRIDGERATION
WHAT IS ARTICLE 440
THIS SECTION OF THE NEC STATES THAT PARRELLELL CONDUCTORS ARE TO INSTALLED IN THE SAME MANNER
WHAT IS 310.10(G)(2)(5)
MSCP
MOTOR SHORT CIRCUIT PROTECTORS
THIS IS THE NUMBR BY WHICH THE HORSEPOWER RATING IS MULTIPLIED BY TO DETERMINE THE MAX. SAFE LOAD THAT A MOTOR MAY BE EXPECTED TO CARRY CONTINOUSLY AT IS RATED VOLTAGE AND FREQUENCY
WHAT IS A SERVICE FACTOR
THESE DEVICES ARE FUSE LIKE AND DESIGNED FOR USE ONLY IN SPECIAL FUSABLE SWITCH CONBONATION STARTER
WHAT IS A MOTOR SHORT CIRCUIT PROTECTOR (MSCP)
THIS SECTION OF THE NEC IS REFERRED TO WHEN CALCULATING CONDUCTOR AMPACITY FOR TORQUE ON A AC ADJUSTABLE VOLTAGE MOTOR, SHADED POLE BREAKERS AND SPLIT CAPACITOR MOTORS
WHAT IS 430.6(B)
THIS IS A NETWORKOF BUSBARS INSTALLED HORIZONTALLY
WHAT IS SWITCHGEAR
OCPD
WHAT IS OVERCURRENT PROTECTION DEVICE
THE SPEED AT WHICH THE MAGNETIC FIELD ROTATES
WHAT IS THE SYNCHRONOUS SPEED
THIS IS THE HIGH STEADY STATE CURRENTDRAWNBY AN ELECTRIC MOTOR WHEN IT IS NOT ROTATING
WHAT IS LOCKED ROTOR AMPS (LRA)
TIS SECTION OF THE NEC STATES THAT EQUIPMENT GROUNDING CONDUCTORS IS NEEDED
NEC 250.122
THIS IS THE LOAD CARRYING ABILITY EXPRESSED IN KILOWATTS
WHAT IS THE CAPACITY
kVAR
KILO VOLT AMP RATING
THESE ARE THE CONDUCTORS AND EQUIPMENT FOR DELIVERING ELECTRICAL ENERGY FROM THE SERVING UTILITY TO THE WIRING SYSTEM OF THE PREMISES SERVED
WHAT IS THE SERVICE
INDIVIDUAL MOTOR DISCONNECT SWITCHES MUST HAVE A AMP RATING ________% OF THE MOTOR FULL LOAD RATING
WHAT IS 115%
MISCELLANEOUS MOTOR TYPES SHOULD BE REFERED TO THIS SECTION WHEN CALCULATING CONDUCTOR AMPACITIES FOR TORQUE MOTORS, SHDED POLE MOTORS AND PERMANENT SPLIT TYPE MOTORS
430.6(B)
TRANSFORMER NAMEPLATE DATA INCLUDES ELECTRICAL RATINGS AND _______RATINGS
WHAT IS VOLTAGE
AIC
AMPERES INTERUPTING CAPACITY
THIS IS A DESIGNATED LIMIT OF OPERATING CHARACTERISTICS BASED ON DEFINATE CONDITIONS
WHAT IS A RATING
NUMBER OF STATOR POLES
FREQUENCY OF A/C LINE HERTZ
WHAT IS THE SYNCHRONOUS SPEED OF A THREE PHASE MOTOR DETERMINED BY
THIS SECTION OF THE NEC DEALS WITH OVERLOAD RELAY SETTING OR SELECTION
WHAT IS 430.32
NEUTRAL CONDUCTORS THIS SIZE AND LARGER MAY BE COLOR CODED WITH WHITE OR GRAY MARKING TAPE
WHAT IS #4AWG
RMS
THE EFFECTIVE VALUE OF A A/C SINE WAVE
A POINT ON THE WIRING SYSTEM AT WHICH CURRENT IS TAKEN TO SUPPLY UTILIZATION EQUIPMENT
WHAT IS A OUTLET
HEATER THERMAL OVERLOADS ARE COMMONLY SET AT WHAT % OF THE MOTOR FULL LOAD CURRENT
115% TO 125%
WHAT SECTION OF THE NEC STATES THAT CONDUCTOR SIZES SHALL BE SELECTED SO THAT THE LOWEST TEMPERATURE RATING OF ANY TERMINAL, CONDUCTOR, OR CONNECTED DEVICE MUST NOT BE EXCEEDED
WHAT IS 110.14(C)
THESE ARE THREE TYPES OF MOTOR OVERLOADS
WHAT IS THERMAL MAGNETIC OR SOLID STATE
Hz
WHAT IS HERTZ
THIS IS THE POINT OF CONNECTIONBETWEENTHE FACILITIESOF THE SERVING UTILITY ANDTHE 1ST POINT OF PREMISES WIRING
WHAT IS THE SERVICE POINT
THE EQUIPMENT GROUNDING CONDUCTOR FOR A MOTOR FEEDER CIRCUIT FURNISHING THE BRANCH CIRCUITS FOR A CONTINOUS DUTY MOTOR IS DETERMINED BY
WHAT IS COMBINING THE RATING OF EACH BRANCH CIRCUIT OCPD AND THE RATING OF EACH OVERLOAD PROTECTIVE DEVICE
WHEN FINDING AMPS USING THE OHMS LAW WHAT ARE THE OTHER FACTORS YOU MUST CONSIDER AND WHAT IS THE FORMULA
YOU MUST HAVE RESISTANCE AND VOLTS
I=E/R
THIS IS THE CONDITION OF THE BREAKER WHEN THE BREAKER HANDLE IS POSITIONED BETWEEN THE ON AND OFF SETTING
WHAT IS TRIPPED