What range of leakage current must trip an IDCI?

Q: VExplain parameters that increase fault conductivity?

A:

Q: 4. What terms describes an overcurrent protective device having an interrupting rating in compliance…

A: According to article 110.9 of the NEC, Circuit breaker describes an over-current protective device…

Q: Can Type TW cable be used in an area that has an ambient temperature of 65degreesC?

A: IN the NEC table of standard cables, it is given the correction factors for the TW cable at…

Q: What is mean by equipment grounding and system grounding?

A: As per bartleby guideline for more than one question asked only first three are to be answered…

Q: The insulation rating of class 3, PLTC, FPL, CM cables rated at ____ volts.

A: Ans. 300 volts

Q: Define the tunneling current.

A: A quantum mechanical phenomena known as tunneling. When electrons pass through a barrier that they…

Q: . Discuss the types of oil circuit breakers.

A: According to the question we have to explain oil circuit breaker types.

Q: Type UF cable, buried underground, fed from a 15-ampere, ground-fault circuit interrupter at a…

A: As stated by National Electric Code(NEC),the maximum cover of UF cable or the maximum burial depth…

Q: Explain the Wiring Diagram of Direct On Line Starter

A: WIRING DIAGRAM OF DIRECT ON LINE (DOL) STARTER: 1. A DOL starter is the most common way to start a…

Q: True False Bonding must be accomplished around conduit connections whenever the fault current return…

A: Yes , the above-mentioned statement is TRUE which suggests that bonding must be accomplished around…

Q: |Fill in the table for a correctly wired duplex outlet (U.S. National Electric Code standards for…

A: The answer to the above problem is given below.

Q: Discuss any two types of signalling mode with a neat diagram.

A: two types of signaling mode with a neat diagram

Q: Discuss application and uses of earth leakage breaker ?

A: ELCB (Earth Leakage Circuit Breaker):- An ELCB (Earth Leakage Circuit Breaker) is an electrical…

Q: When testing the twisted pair cable through cable tester, if the LED lights are jumping back and…

A: Cable Tester- Cable tester is a device which is used to test a cable. Cable tester detects the…

Q: How the required number of branch circuits can be determined?

A: According to the National Electrical Code (NEC), for individual branch circuits, the value of the…

Q: 2. What is type of Ring counter Explain them?

A: A ring counter is a composed of flip-flops connected into a shift register, with the output of the…

Q: What is an MCB and how fast should it trip during a short-circuit fault?

A:

Q: 11. What are at least two instances where a splice is allowed to be made in underground consumer's…

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: Identify and explain the safety procedures and precautions when working with tools and equipment's…

A: Electrical cables are used for transferring the signals and are also used for long distance…

Q: What is the approximate line-to- grounded arcing fault value on a 480 / 277-volt system where the…

A: The given system is a 480 / 277-volt system.  The line-line-to-ground-fault current is 30,000…

Q: draw a block diagram of the jumpers connected to the front panel of a computer system unit

A:

Q: What type of circuit does PLL look like over its lock range?

A: PHASE-LOCKED LOOP (PLL): 1. In the frequency demodulation technique, frequency synthesisers, and…

Q: Differentiate MCB and RCD and Explains its purpose in an installation?

A: MCB is an electrical switch designed for automatically working to protect the electrical circuit…

Q: Mention the faults that can occur on the CT/PT, Switchgear, Overhead lines and underground lines.

A: 1. symmetrical faults 2. unsymmetrical faults

Q: Which of the following is an approved disconnecting means for a feeder or branch circuit supplying a…

A: The disconnecting means for a feeder or branch circuit supplying a separate building or structure is…

Q: nmc cable is run through a floor it must be protected by at least how many inches of

A: To find the minimum distance of protection in inches of NM cable when it run through floor.

Q: 5.Differentiate the advantage and disadvantages of Conduits RSC,EMT,IMC, & PVC with each other

A:

Q: Differentiate cable tester with multi meter.

A: A cable tester is an electronic device used to check the electrical connections in a signal cable or…

Q: Discuss  Suspension insulators are recommended in high voltage transmission lines.

A: Pin encasings become excessively cumbersome an uneconomical past 33 kV. Thus, for voltages higher…

Q: Do not worry about "box fill" when working with dimmer and speed control devices. They are about the…

A: Compare between Size of dimmer and speed control devices. They are about the same size as regular…

Q: Four No. 12 and four No. 10 conductors are to be installed in a EMT conduit. What size EMT conduit…

A: Conductors size is selected on the basis of assigned numbers.  As the assigned number increases then…

Q: According to NEC , what is the definition of a trained electrician?

A: The NEC stands for National Electrical Code and it provides some basic standards that must be…

Q: procedures

A: Explanation:   The safety procedures and precautions to be taken when working with tools and…

Q: Receptacles that provide power for a spa or hot tub shall be ________. Select one: a.…

A: According to ARTICLE 680  of National electricity code (NEC), any outlet that supplies a hot tub or…

Q: How to connect and disconnect the circuit breaker and disconnector respectively, and explain why?

A: A circuit breaker is a kind of electrical switch which is used to protect an electrical circuit from…

Q: How does a multimeter identify BJT terminals?

A: First read all the functions of a multimeter carefully.

Q: Is this statement TRUE or FALSE?, "The voltage drops to totally zero value in the event of…

A:

Q: Which type of cable would you use to connect two buildings in an office installation? A. Buried…

A: Given & to find: Which type of cable would you use to connect two buildings in an office…

Q: Provided the bus-bar arrangement below, provide the following: a. Name the bus-bar arrangement; b.…

A: An electrical bus bar is  a conductor or a group of conductor used for collecting electric power…

Q: Describe how a fault in long cable can be detected and located using partial discharge technique…

A: The partial discharge technique of high voltage is the best technique for the detection of failure…

Q: Who has the responsibility for Code interpretations? When are rules in the PEC mandatory and when…

A: 1. Who has the responsibility for Code interpretations? Answer :  As per NEC, section 90.4 and…

Q: A grounding-fault current path is an electrically conductive path from a point of a line-to-case…

A: The solution is given below  A grounding-fault current path is an electrically conductive path from…

Q: 8. All conductors of a multiwire branch circuit must originate from ____

A: A multi-wire branch circuit is circuit which has two or more ungrounded and one grounded conductors

Q: Why are circuit breakers and fuses ineffective in protecting against transient over voltage due to…

A: The operation of the circuit breakers are at a speed of the 50 milli-second. But this speed is very…

Types of Thyristors

With four layers of alternating P- and N- materials, a thyristor is a solid-state semiconductor device. It acts as a type of bi-stable switch and it conducts when the gate receives a current trigger and continues to conduct until the voltage is reverse biased across the device or by some means until the voltage is removed. The silicon-controlled rectifier is considered synonymous with thyristors by some sources. Thyristors are defined as more complex by other sources as it contains at least four-layer of alternating N-type and P-type substrate. They find large applications in the control of electrical power supplies, electric motor speed control, and ranging of light dimmers because thyristors can control large amounts of power supplies and voltage with a small device. The circuit symbol of the thyristor is given below.