i dont have the answers , but did the best i could looking them up. any help would be great. maybe guide me in the right direction please on missed ones.
INTERRUPTING CAPACITY OF A CIRCUIT BREAKER IS FOR A)LOAD
B)VOLTAGE
C)AMP RATING
D)SHORT CIRCUIT CURRENT
MIN. SIZE THW COPPER FOR A CONTINUOUS DUTY MOTOR WITH 70 AMPS. PER PHASE. 4AWG 3AWG 2AWG 1AWG
GIVEN; THE VOLTAGE DROP ALLOWED IN THE CONDUCTOR IS 3 VOLTS AND THE LINE CURRENT IS 9 AMPS. DETERMINE THE APPROXIMATE MAX CIRCUIT LENGTH IN FEET FOR A 12 AWG SINGLE PHASE COPPER CONDUCTOR
0-150 151-250 251-350 351-450
GIVEN 3 PHASE 120 VOLT PHASE A 7200VA- PHASE B 8400VA PHASE C 9600VA WHAT IS THE MAX NEUTRAL CURRENT IN AMPS THAT A NEUTRAL WOULD BE REQUIRED TO CARRY FOR A 3 PHASE WYE SYS.
A) 17.32 B)25.46 C)60.00 D)80.00
PRIMARY PLUS SECONDARY TAP IS 22 FEET MAIN FEEDER IS 111AMPS AND THE FEEDER OVERCURRENT PROTECTION IS 125 AMPS. WHEN A TRANSFORMER FEEDER TAP IS MADE THE MIN AMPACITY PREMITTED FOR THE TAP CONDUCTOES IS _______ AMPERES
A) 20 B)37 C)42 D)125
HERMATIC REFRIGERANT MOTOR COMPRESSOR FULL LOAD CURRENT OF 20 AMPS. WHAT IS MAX. RATE BRANCH CIRCUIT PROTECTIVE DEVICE?
A) 25 B) 30 C) 35 D) 45
AN INVERSE TIME CIRCUIT BREAKER TO PROTECT A HERMETIC MOTOR COMPRESSOR FROM OVERLOAD SHALL BE RATED NOT MORE THAT WHAT PERCENT OF RATED LOAD CURRENT
A)115 B)125 C) 140 D)175
MAX. INVERSE TIME CIRCUIT BREAKER TO PROTECT A 3 PHASE SQUIRREL CAGE DESIGN B MOTOR WITH A 20 AMP FULL LOAD CURRENT IS____ AMP
A)20 B)25 C)30 D)50
THE FRAME OF AN ELE. CLOTHES DRYER IS PREMITTED TO BE GROUNDED FOR NEW INSTALLATION BY A) SHEET METAL SCREWS
B)STRAPED TO ANOTHER APPLAINCE
C) STANDARD COPPER GROUNDING CONDUCTOR
D) USING A BONDING JUMPER TO CONNECT GROUNDED CONDUCTOR TO FRAME
DEVICE BOX 2 CLAMPS 1 HICKEY 3 GROUNDING CONDUCTORS 1 SINGLE DEVICE. NUMBER OF CONDUCTORS THAT MUST BE DEDUCTED TO DETERMINE THE PREMITTED CURRENT CARRYING CODUCTORS IS
A) 3 B)5 C) 8 D)9
ALL PHASE CONDUCTORS ARE REQURIED TO BE IN THE SAME RACEWAY TO REDUCE_____ A) COST B) RESISTANCE C) VOLTAGE DROP D) INDUCTIVE HEAT
MAX # OF #14THHN IN A 3/8 FLEX CONDUIT WITH INSIDE CONNECTOR
A) 1 B) 2 C) 3 D) 4
5 CONDUCTORS IN A METAL CONDUIT WITH A TOTAL CROSS SECTION OF 3.5 SQ. INCHES. WHAT SIZE SCH. 40 WOULD YOU USE. I HAVE NO ANSWERS!
WHY IS ELECTRICAL CONTINUITY REQ. FOR METAL CONDUIT?
THE BRANCH CIRCUIT AMPACITY FOR A MOTOR HAVING 24 AMPS FULL LOAD CURRENT SHALL BE NOT LESS THAN 15 25 29 30 AMPS
HOW MANY SINGLE POLE 15 AMP LIGHTING CIRCUITS REQ. FOR A 3000 SQ FOOT HOUSE 120/240 SERVICE 3 4 5 6
WHAT WOULD CAUSE EXECESSIVE OBJECTIONABLE CURRENT FLOW IN THE EQUIPMENT GROUNDING CONDUCTOR WHEN CHECKING AN APPLAINCE CIRCUIT. A) HIGH LOAD RESISTANCE B) EXCESSIVE NEUTRAL CONDUCTOR RESIST. C) EXC. GROUNDING CONDUCTOR RESIST. D) MULTIPLE CONNECTIONS BETWEEN NEUTRAL AND GROUND CONDUCTORS
1/.amp rating
2/ 3 awg
3/ 0-150
4/ 80 amps
5/42 amps
6/25 amps
7/125%
8/50 amps
9/ c
10/ 5
11/induction heat
12/3
13/31/2 chapter9 table 1 i think
14/grounding purpose
15/30 430.22
16/ 5
17/ HELP ???
INTERRUPTING CAPACITY OF A CIRCUIT BREAKER IS FOR A)LOAD
B)VOLTAGE
C)AMP RATING
D)SHORT CIRCUIT CURRENT
MIN. SIZE THW COPPER FOR A CONTINUOUS DUTY MOTOR WITH 70 AMPS. PER PHASE. 4AWG 3AWG 2AWG 1AWG
GIVEN; THE VOLTAGE DROP ALLOWED IN THE CONDUCTOR IS 3 VOLTS AND THE LINE CURRENT IS 9 AMPS. DETERMINE THE APPROXIMATE MAX CIRCUIT LENGTH IN FEET FOR A 12 AWG SINGLE PHASE COPPER CONDUCTOR
0-150 151-250 251-350 351-450
GIVEN 3 PHASE 120 VOLT PHASE A 7200VA- PHASE B 8400VA PHASE C 9600VA WHAT IS THE MAX NEUTRAL CURRENT IN AMPS THAT A NEUTRAL WOULD BE REQUIRED TO CARRY FOR A 3 PHASE WYE SYS.
A) 17.32 B)25.46 C)60.00 D)80.00
PRIMARY PLUS SECONDARY TAP IS 22 FEET MAIN FEEDER IS 111AMPS AND THE FEEDER OVERCURRENT PROTECTION IS 125 AMPS. WHEN A TRANSFORMER FEEDER TAP IS MADE THE MIN AMPACITY PREMITTED FOR THE TAP CONDUCTOES IS _______ AMPERES
A) 20 B)37 C)42 D)125
HERMATIC REFRIGERANT MOTOR COMPRESSOR FULL LOAD CURRENT OF 20 AMPS. WHAT IS MAX. RATE BRANCH CIRCUIT PROTECTIVE DEVICE?
A) 25 B) 30 C) 35 D) 45
AN INVERSE TIME CIRCUIT BREAKER TO PROTECT A HERMETIC MOTOR COMPRESSOR FROM OVERLOAD SHALL BE RATED NOT MORE THAT WHAT PERCENT OF RATED LOAD CURRENT
A)115 B)125 C) 140 D)175
MAX. INVERSE TIME CIRCUIT BREAKER TO PROTECT A 3 PHASE SQUIRREL CAGE DESIGN B MOTOR WITH A 20 AMP FULL LOAD CURRENT IS____ AMP
A)20 B)25 C)30 D)50
THE FRAME OF AN ELE. CLOTHES DRYER IS PREMITTED TO BE GROUNDED FOR NEW INSTALLATION BY A) SHEET METAL SCREWS
B)STRAPED TO ANOTHER APPLAINCE
C) STANDARD COPPER GROUNDING CONDUCTOR
D) USING A BONDING JUMPER TO CONNECT GROUNDED CONDUCTOR TO FRAME
DEVICE BOX 2 CLAMPS 1 HICKEY 3 GROUNDING CONDUCTORS 1 SINGLE DEVICE. NUMBER OF CONDUCTORS THAT MUST BE DEDUCTED TO DETERMINE THE PREMITTED CURRENT CARRYING CODUCTORS IS
A) 3 B)5 C) 8 D)9
ALL PHASE CONDUCTORS ARE REQURIED TO BE IN THE SAME RACEWAY TO REDUCE_____ A) COST B) RESISTANCE C) VOLTAGE DROP D) INDUCTIVE HEAT
MAX # OF #14THHN IN A 3/8 FLEX CONDUIT WITH INSIDE CONNECTOR
A) 1 B) 2 C) 3 D) 4
5 CONDUCTORS IN A METAL CONDUIT WITH A TOTAL CROSS SECTION OF 3.5 SQ. INCHES. WHAT SIZE SCH. 40 WOULD YOU USE. I HAVE NO ANSWERS!
WHY IS ELECTRICAL CONTINUITY REQ. FOR METAL CONDUIT?
THE BRANCH CIRCUIT AMPACITY FOR A MOTOR HAVING 24 AMPS FULL LOAD CURRENT SHALL BE NOT LESS THAN 15 25 29 30 AMPS
HOW MANY SINGLE POLE 15 AMP LIGHTING CIRCUITS REQ. FOR A 3000 SQ FOOT HOUSE 120/240 SERVICE 3 4 5 6
WHAT WOULD CAUSE EXECESSIVE OBJECTIONABLE CURRENT FLOW IN THE EQUIPMENT GROUNDING CONDUCTOR WHEN CHECKING AN APPLAINCE CIRCUIT. A) HIGH LOAD RESISTANCE B) EXCESSIVE NEUTRAL CONDUCTOR RESIST. C) EXC. GROUNDING CONDUCTOR RESIST. D) MULTIPLE CONNECTIONS BETWEEN NEUTRAL AND GROUND CONDUCTORS
1/.amp rating
2/ 3 awg
3/ 0-150
4/ 80 amps
5/42 amps
6/25 amps
7/125%
8/50 amps
9/ c
10/ 5
11/induction heat
12/3
13/31/2 chapter9 table 1 i think
14/grounding purpose
15/30 430.22
16/ 5
17/ HELP ???
