How do you measure the leakage current in a house wiring?

How do you measure the leakage current in a house wiring?
by

1 Answer

Answer :

There are two ways for it. First one is to keep all lights and other domestic electric appliances OFF for an hour and record the energy consumption in the energy meter. Calculate current from it. Second way is by measuring the current in the house earth conductor as leakage current goes to earth.
by

Related questions

An electrical connection between the wiring of an electric motor and its metal frame is known as a/an _____________. A. eddy current B. ground C. impedance D. flux leakage

Description : An electrical connection between the wiring of an electric motor and its metal frame is known as a/an _____________. A. eddy current B. ground C. impedance D. flux leakage

Last Answer : Answer: B

A galvanometer is an instrument used to measure ___________. A. thickness of galvanized metal B. resistance of electrical wiring insulation C. very small amounts of current or voltage D. quantity of galvans in an electric circuit

Description : A galvanometer is an instrument used to measure ___________. A. thickness of galvanized metal B. resistance of electrical wiring insulation C. very small amounts of current or voltage D. quantity of galvans in an electric circuit

Last Answer : Answer: C

A current-carrying conductor making electrical contact with a wiring conduit will be indicated by a _____________. A. high switchboard wattmeter reading B. totally dark switchboard ground detecting light C. low switchboard wattmeter reading D. all of the above

Description : A current-carrying conductor making electrical contact with a wiring conduit will be indicated by a _____________. A. high switchboard wattmeter reading B. totally dark switchboard ground detecting light C. low switchboard wattmeter reading D. all of the above

Last Answer : Answer: B

For the illustrated wiring of a three phase alternator, which statement is true about the current? EL-0074 A. phase current is 1.73 times the line current B. line current is 1.73 times the phase current C. there is no relationship between phase current and line current D. line current is equal to phase current

Description : For the illustrated wiring of a three phase alternator, which statement is true about the current? EL-0074 A. phase current is 1.73 times the line current B. line current is 1.73 times the ... . there is no relationship between phase current and line current D. line current is equal to phase current

Last Answer : Answer: D

A current-carrying conductor makes accidental contact with a wiring conduit. This will be indicated by a _____________. A. low switchboard wattmeter reading B. high switchboard wattmeter reading C. darkened switchboard ground detecting lamp D. darkened switchboard synchronizing lamps

Description : A current-carrying conductor makes accidental contact with a wiring conduit. This will be indicated by a _____________. A. low switchboard wattmeter reading B. high switchboard wattmeter reading C. darkened switchboard ground detecting lamp D. darkened switchboard synchronizing lamps

Last Answer : Answer: C

A current carrying conductor making an electrical contact with a wiring metal conduit is indicated by a _____________. A. low switchboard wattmeter reading B. reading of 1.0 on the power factor meter C. high switchboard voltmeter reading D. totally darkened switchboard ground-detecting light

Description : A current carrying conductor making an electrical contact with a wiring metal conduit is indicated by a _____________. A. low switchboard wattmeter reading B. reading of 1.0 on the power factor meter C. high switchboard voltmeter reading D. totally darkened switchboard ground-detecting light

Last Answer : Answer: D

The leakage current in the transmission lines is referred to as the a) Resistance b) Radiation c) Conductance d) Polarisation

Description : The leakage current in the transmission lines is referred to as the a) Resistance b) Radiation c) Conductance d) Polarisation

Last Answer : Ans: C

One of the generator or motor bearings is generally insulated from the end housing in order to prevent ________. A. rapid brush wear B. current leakage from the shaft C. excessive field winding heat D. circulation of shaft currents induced in the machine's frame

Description : One of the generator or motor bearings is generally insulated from the end housing in order to prevent ________. A. rapid brush wear B. current leakage from the shaft C. excessive field winding heat D. circulation of shaft currents induced in the machine's frame

Last Answer : Answer: D

When a megohmmeter is used to test the insulation of a large motor, the initial dip of the pointer toward 'zero' is caused by ____________. A. good insulation B. the capacitance of the windings C. the leakage of the current along the surface of dirty insulation D. the dielectric-absorption effect of the insulation

Description : When a megohmmeter is used to test the insulation of a large motor, the initial dip of the pointer toward 'zero' is caused by ____________. A. good insulation B. the capacitance of the ... of the current along the surface of dirty insulation D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter pointer _____________. A. fluctuating around a constant resistance reading B. dipping towards 'zero', then rising slowly C. kicking slightly downscale as voltage is applied D. continually rising as the test voltage is applied

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter pointer _____________. A. fluctuating around a ... slightly downscale as voltage is applied D. continually rising as the test voltage is applied

Last Answer : Answer: C

When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Description : When using a megohmmeter to test the dielectric strength of wire insulation, a continuous series of slight downscale kicks by the pointer is result of ____________. A. good insulation B. the ... dirty insulation C. the capacitance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: B

When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of current along the surface of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Description : When a megohmmeter is used to test the dielectric strength of wire insulation, the initial dip of the pointer toward 'zero' is caused by _____________. A. good insulation B. the leakage of ... of dirty insulation C. the capacitance of the circuit D. the dielectric absorption effect of the insulation

Last Answer : Answer: C

When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer _____________. A. dipping toward zero then raising slowly B. continually rising as test voltage is applied C. kicking slightly down scale as voltage is applied D. fluctuating around a constant resistance reading

Description : When a megohmmeter is being used to test insulation resistance, current leakage along the surface of the insulation is indicated by the megohmmeter's pointer _____________. A. dipping toward ... kicking slightly down scale as voltage is applied D. fluctuating around a constant resistance reading

Last Answer : Answer: C

You are testing the insulation in an AC generator with a megohmeter. The resistance value of a dry, clean winding will ____________. A. continue to rise as the test potential is maintained, becoming fairly steady as the leakage current stabilizes B. remain constant as the temperature of the windings increases C. continue to drop as the potential is maintained, becoming fairly steady after 5 to 7 minutes D. stabilize after approximately 2 to 4 minutes of fluctuation

Description : You are testing the insulation in an AC generator with a megohmeter. The resistance value of a dry, clean winding will ____________. A. continue to rise as the test potential is maintained, ... fairly steady after 5 to 7 minutes D. stabilize after approximately 2 to 4 minutes of fluctuation

Last Answer : Answer: A

When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates ____________. A. good insulation B. bad insulation C. high insulation power factor D. a high slot discharge factor

Description : When you are making a high potential test on a piece of repaired electrical machinery, a rise in leakage current indicates ____________. A. good insulation B. bad insulation C. high insulation power factor D. a high slot discharge factor

Last Answer : Answer: B

When a megohmmeter is used to test insulation, the gradual rise of the pointer reading as a result of continued cranking, is caused by _____________. A. good conductor resistance B. the leakage of current along the surface of dirty insulation C. the inductive reactance of the windings D. the dielectric-absorption effect of the insulation

Description : When a megohmmeter is used to test insulation, the gradual rise of the pointer reading as a result of continued cranking, is caused by _____________. A. good conductor resistance B. the ... insulation C. the inductive reactance of the windings D. the dielectric-absorption effect of the insulation

Last Answer : Answer: D

The use of four diodes, in a full-wave bridge rectifier circuit, will __________. A. provide unidirectional current to the load B. allow a very high leakage current from the load C. convert direct current to alternating current D. offer high opposition to current in two directions

Description : The use of four diodes, in a full-wave bridge rectifier circuit, will __________. A. provide unidirectional current to the load B. allow a very high leakage current from the load C. convert direct current to alternating current D. offer high opposition to current in two directions

Last Answer : Answer: A

What is the purpose of HV / leakage current test on stator?

Description : What is the purpose of HV / leakage current test on stator?  

Last Answer : This is to find out weakness in the stator winding. If the ambient conditions are right, and the insulation is weak, the leakage current will increase non-linearly.  The record of voltage ... current. In HV test starting leakage current should be more than switching off current in μ Amps. 

Coast Guard Regulations (46 CFR) require instrument and control wiring in a switchboard to be of what minimum size? A. 12 AWG B. 14 AWG C. 16 AWG D. 18 AWG

Description : Coast Guard Regulations (46 CFR) require instrument and control wiring in a switchboard to be of what minimum size? A. 12 AWG B. 14 AWG C. 16 AWG D. 18 AWG

Last Answer : Answer: B

The wiring diagram for the motor starting circuit shown in the illustration indicates ______________. EL-0007 A. resistance starting B. reduced voltage starting C. low voltage protection D. low voltage release

Description : The wiring diagram for the motor starting circuit shown in the illustration indicates ______________. EL-0007 A. resistance starting B. reduced voltage starting C. low voltage protection D. low voltage release

Last Answer : Answer: C

Which statement is true concerning a split-phase induction motor? A. Motor rotation can be reversed without changing the windings or leads. B. Motor speed can be readily adjusted from zero to full speed. C. The motor will run as a generator with the proper wiring. D. Motor rotation can be reversed by reversing the leads on the starting winding.

Description : Which statement is true concerning a split-phase induction motor? A. Motor rotation can be reversed without changing the windings or leads. B. Motor speed can be readily adjusted from zero to full ... proper wiring. D. Motor rotation can be reversed by reversing the leads on the starting winding.

Last Answer : Answer: D

As part of a routine maintenance program for deck machinery, you should ___________. A. inspect electrical wiring and pushbutton switches for evidence of corrosion or burned insulation B. disassemble pushbutton switches and drain water each week C. remove motor covers and ventilate as weather permits D. Check drum switch contact pressure every three months

Description : As part of a routine maintenance program for deck machinery, you should ___________. A. inspect electrical wiring and pushbutton switches for evidence of corrosion or burned insulation B. disassemble ... covers and ventilate as weather permits D. Check drum switch contact pressure every three months

Last Answer : Answer: A

The direction of rotation of a DC propulsion motor can be reversed by __________. A. reversing the field connections B. reversing the field and the armature connections C. wiring the field and armature in parallel D. wiring the field and armature in series

Description : The direction of rotation of a DC propulsion motor can be reversed by __________. A. reversing the field connections B. reversing the field and the armature connections C. wiring the field and armature in parallel D. wiring the field and armature in series

Last Answer : Answer: A

When a console indicating lamp burns out, attempts to renew it should not be made while maneuvering because _______________. A. the new lamp may be of a higher wattage and cause heat damage to the lens B. removing a faulty lamp usually causes an alarm to sound on the bridge C. attention should be paid only to engine orders D. a socket/wiring fault may cause a ground or short circuit to shut down a vital function

Description : When a console indicating lamp burns out, attempts to renew it should not be made while maneuvering because _______________. A. the new lamp may be of a higher wattage and cause heat damage to the lens ... D. a socket/wiring fault may cause a ground or short circuit to shut down a vital function

Last Answer : Answer: D

Which of the illustrations listed below is representative of a motor controller's 'wiring' or 'connection' diagram? Book A. EL-0023 B. EL-0024 C. EL-0037 D. EL-0058

Description : Which of the illustrations listed below is representative of a motor controller's 'wiring' or 'connection' diagram? Book A. EL-0023 B. EL-0024 C. EL-0037 D. EL-0058

Last Answer : Answer: A

A ground can be defined as an electrical connection between the wiring of a motor and its ____________. A. shunt field B. circuit breaker C. metal framework D. interpole

Description : A ground can be defined as an electrical connection between the wiring of a motor and its ____________. A. shunt field B. circuit breaker C. metal framework D. interpole

Last Answer : Answer: C

What are the testing of wiring installation?

Description : What are the testing of wiring installation?

Last Answer : Following are the tests to be done after installation of wiring. a. Polarity test. b. Short circuit test. c. Continuity test. d. Insulation test between conductors and conductors to the earth. e. Earth continuity test.

What are the systems of wiring?

Description : What are the systems of wiring?

Last Answer : Following are the general systems of domestic wiring and industrial wiring. a. Cleat system wiring. b. Casing and capping system wiring. c. Lead sheathed system wiring. d. C.T.S, T.R.S, P.V.C sheathed system wiring. e. Conduit system wiring.

What are the types of wiring?

Description : What are the types of wiring?

Last Answer : Mainly there are two types of wiring systems. a. Tree system. b. Distribution system.

STAIR CASE WIRING

Description : STAIR CASE WIRING

Last Answer : A two switch is installed near the first step of the stairs. The other two way switch is installed at the upper part where the stair ends. The light point is provided between first ... terminal of the second switch; other two independent terminals of each circuit are connected through cables.

WIRING in electrical engineering

Description : WIRING in electrical engineering

Last Answer : WIRING METHODS A circuit is a path along which the electric current flows from the negative Side of the power source to the positive side. There are three types of electrical circuit. (i) Series ... down, the other devices continue to operate. Hence this type of circuit is used in home wiring.

TOOLS USED IN WIRING

Description : TOOLS USED IN WIRING

Last Answer : PLIERS Pliers are used to cut wire and also to hold it. Pliers have an insulated handle. Long nose pliers are used to hold wires in small space and also to tighten or loose small nuts. ... cotton flexible or rubber flexible wire and poly vinyl chloride (PVC) wires are commonly used in house wiring.

Transformer cores are laminated to reduce _____________. A. eddy currents B. secondary flux C. leakage flux D. all of the above

Description : Transformer cores are laminated to reduce _____________. A. eddy currents B. secondary flux C. leakage flux D. all of the above

Last Answer : Answer: A

Before testing insulation with a megohmmeter, the windings of large machines should be grounded for about 15 minutes just prior to the test as the ______________. A. insulation may be damaged B. insulation may be covered with moisture C. armature windings will have a greater number of leakage paths D. larger machines may acquire a charge of static electricity during operation

Description : Before testing insulation with a megohmmeter, the windings of large machines should be grounded for about 15 minutes just prior to the test as the ______________. A. insulation may be damaged ... number of leakage paths D. larger machines may acquire a charge of static electricity during operation

Last Answer : Answer: D

Before testing insulation with a megohmmeter, the windings of large machines should be grounded for about 15 minutes just prior to the test, because the ___________. A. static charge of the machine may give a false reading B. armature will have a greater number of leakage paths C. insulation may be damaged D. insulation may be covered with moisture

Description : Before testing insulation with a megohmmeter, the windings of large machines should be grounded for about 15 minutes just prior to the test, because the ___________. A. static charge of the machine ... number of leakage paths C. insulation may be damaged D. insulation may be covered with moisture

Last Answer : Answer: A

How is magnetic leakage reduced to a minimum in commercial transformers?

Description : How is magnetic leakage reduced to a minimum in commercial transformers?

Last Answer : By interleaving the primary and secondary windings.

How the leakage reactance of the transformer is reduced?

Description : How the leakage reactance of the transformer is reduced?

Last Answer : In transformers the leakage reactance is reduced by interleaving the high voltage and low voltage winding.

Two transformers operating in parallel will share the load depending upon their (A) Rating. (B) Leakage reactance. (C) Efficiency. (D) Per-unit impedance.

Description : Two transformers operating in parallel will share the load depending upon their (A) Rating. (B) Leakage reactance. (C) Efficiency. (D) Per-unit impedance.

Last Answer : Ans: A Transformers having higher kVA rating will share more load.

Is there a tester that helps find a break in house wiring?

Description : Is there a tester that helps find a break in house wiring?

Last Answer : answer:You could get a Hotstick. But that would cost more then having a electrician come out and put in a new wire. There are some tools to find the break but those are usually used by utility ... are not accurate over short distances. I would just spend the hundred bucks to have the wire replaced.

House Wiring How much? Type, What? What ?

Last Answer : House Wiring Mainly Two Type. A ) Surface Wiring B ) Concealed Wiring Surface Wiring 5 Type : 1 ) Batten Wiring 2 ) Conduit Wiring 3 ) Clit Wiring 4 ) Casing Wiring 5 ) M. S. Wiring Concealed Wiring Again Two Type , 1 ) Concealed Conduit 2 ) Concealed Wire Wiring

Water cannot be used to extinguish fire caused by electric current, because – (1) it may cause electrocution (2) it may cause hydrolysis (3) it may cause electrolysis (4) it may spoil the wiring

Description : Water cannot be used to extinguish fire caused by electric current, because – (1) it may cause electrocution (2) it may cause hydrolysis (3) it may cause electrolysis (4) it may spoil the wiring

Last Answer : (1) it may cause electrocution Explanation: Using water for putting out electric fires is risky, as the firemen can be electrocuted by the water jet. Water is a good conductor of ... jet directly into the hands of the person who is holding the waterhose, resulting in immediate electrocution

To protect wiring from excessive passing of current is A. voltmeter B. fuse C. galvanometer D. resistanc

Description : To protect wiring from excessive passing of current is A. voltmeter B. fuse C. galvanometer D. resistanc

Last Answer : fuse

Water cannot be used to extinguish fire caused by electric current, because (1) it may cause electrocution (2) it may cause hydrolysis (3) it may cause electrolysis (4) it may spoil the wiring

Description : Water cannot be used to extinguish fire caused by electric current, because (1) it may cause electrocution (2) it may cause hydrolysis (3) it may cause electrolysis (4) it may spoil the wiring 

Last Answer : it may cause electrocution

When current flows through heater coil it glows but supply wiring does not glow because?

Description : When current flows through heater coil it glows but supply wiring does not glow because?

Last Answer : When current flows through heater coil it glows but supply wiring does not glow because resistance of heater coil is more than the supply wires.

Insulators perform which of the following functions? a) Conduction b) Convection c) Provide electrical insulation d) Allows current leakage at interfaces

Description : Insulators perform which of the following functions? a) Conduction b) Convection c) Provide electrical insulation d) Allows current leakage at interfaces

Last Answer : c) Provide electrical insulation

The records of exports and imports in goods and services and transfer payments is known as a) Current account b) Budget surplus c) Economic leakage d) degree of openness

Description : The records of exports and imports in goods and services and transfer payments is known as a) Current account b) Budget surplus c) Economic leakage d) degree of openness

Last Answer : a) Current account

A cable carrying alternating current has (a) hysteresis losses only (b) hysteresis and leakage losses only (c) hysteresis, leakage and copper losses only (d) hysteresis, leakage, copper and friction losses

Description : A cable carrying alternating current has (a) hysteresis losses only (b) hysteresis and leakage losses only (c) hysteresis, leakage and copper losses only (d) hysteresis, leakage, copper and friction losses

Last Answer : (b) hysteresis and leakage losses only

In a reverse biased PN-junction, which current carriers cause leakage current?

Description : In a reverse biased PN-junction, which current carriers cause leakage current?

Last Answer : The minority carriers

Describe the leakage current in a transmission line and in what unit it is expressed.

Description : Describe the leakage current in a transmission line and in what unit it is expressed.

Last Answer : The small amount of current that flows through the dielectric between two wires of a transmission line and is expressed in micro ohms per unit length.

As a transistor ages, what happens to the leakage current?

Description : As a transistor ages, what happens to the leakage current?

Last Answer : It tends to increase