A feeder installation consists of 208Y/120-volt, 3-phase, 4-wire electrical system with a balanced load of fluorescent lighting. Each phase conductor has a 340 ampere load. The MINIMUM permitted ampacity of the neutral conductor for this feeder is ________.   238 amperes   275 amperes   340 amperes   680 amperes.

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: Six 1/0 aluminum conductors are to be run in a conduit. Each conductor has type THWN insulation's,…

A:

Q: Give the raceway size required for each of the following conductor combinations: 1. Five, 10 AWG,…

A: The raceway size  required for each of the following conductor combination is given as per the…

Q: there are six general conditions under which equipment that contains exposed concurrent carrying…

A: Step 1:Given:The first condition establishes a zone measuring 5′ horizontally and 8′ vertically from…

Q: Equipment Grounding  13. A metal elbow is a part of a nonmetallic, underground raceway. The elbow…

A: Note: We are authorized to answer the first question since the exact one wasn’t specified. Please…

Q: The ohms per 1000 feet measurements for conductors can be found in _____. Select one: a. article…

A: The obstruction offered to the smooth flow of current is called resistance. The electrical element…

Q: How far are the insulator chairs of the 3rd Rail spaced from one another along the tracks?

A: A THIRD RAIL, ALSO KNOWN AS A LIVE RAIL, ELECTRIC RAIL OR CONDUCTOR RAIL, IS A METHOD OF PROVIDING…

Q: A DC motor that draws 7.2A is located 85 feet from its 240VDC source. The copper conductors…

A: Given Voltage V = 240 V Current I = 7.2 A Length L = 85 ft Voltage drop = 2%

Q: 1. What size conductors rated 90°C are required for a feeder installed between the pane/board with…

A: Given information, The ampacity rating is I=320 A. Load is continuous. Rated temperature of the…

Q: Conductors shall be arranged so the power distribution block terminals are _____ following…

A: In the National Electrical Code (NEC), information about power distribution block is mentioned.…

Q: DC Voltage has ______ polarity Types of grounds in electrical/electronic circuits.

A: DC voltage has fixed polarity.  The polarity is either positive on one terminal and negative on…

Q: Three separate neutral conductors are installed to reduce the possibility of a conductor overheating…

A: Three separate neutral conductors are installed to reduce the possibility of a conductor overheating…

Q: Two identical (in terms of voltage and power ratings) transformers A & B are designed to ru at…

A: In this question,  We need to choose the correct option We know Weight of the transformer is…

Q: When installing raceways underground in rigid nonmetallic conduit and other approved raceways, there…

A: To find the cover distance in installing underground raceways in rigid non-metallic conduit.

Q: Draw the Graphical symbols for various types of Apparatus & Circuit elements for Substations main…

A: Substation equipment Isolator LA Circuit Breaker Current transformer Potential transformer Circuit…

Q: a system or circuit conductor (one that carries current), that is intentially grounded is referred…

A: The grounding is done to provide path for excess flow of current in order to prevent the devices or…

Q: An insulated grounded conductor ____ or larger is permitted to be re-identified at the time of…

A: Option a-AWG is correct answer.

Q: 5. How many system bonding jumpers normally are there for a separately derived system that's…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub- parts…

Q: While multi-wire branch circuits are sometimes used in residential wiring, they present the problem

A: A multi wire branch circuit generally means that there are two ungrounded or simply live conductors…

Q: Q1. We have motor, motor specification as below. 61 Ampare, 277V, Use EMT conduit, distance is…

A: Some motor  specifications:

Q: To interconnect grounding electrode and form grounding electrode system, connect the________ to a…

A: The bonding jumper is used to interconnect the grounding electrode and form a grounding electrode…

Q: Please answer in typing format

A: A continuous black outer finish is one of the means to identify a negative ungrounded branch circuit…

Q: Airframe Electrical System Question: What are the two types of wire installation method. (Source:…

A: The two types of wire installation method are :Open WiringWire Groups and Bundles

Q: Restrictions on types of conduits used for installing service, sub panel, emergency service panel.

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A free-standing electric range is rated 11.8 kW, 120/240 volts. The wiring method is…

A: Step 1:1. Maximum Demand According to Column C, Table 220.55:The National Electrical Code (NEC)…

Q: he ___________ causes a low value of residual voltage which, in turn, causes a small current to flow…

A: The ___________ causes a low value of residual voltage which, in turn, causes a small current to…

Q: Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to…

A: A murray loop test is performed on a faulty cable with  cable having 300 m long length.   Now at…

Q: 1. What is the ideal line percent regulation rating? 2. Shunt voltage regulators require  __________…

A: The objective is to determine line regulation and voltage sampling.

Q: A conductor with continuous white or gray covering shall be used only for the grounded circuit…

A: According to article NEC 200.6, the facts about the identification of the Grounded conductors are…

Q: How far can a 230V, 50A, three-phase load be located from a panelboard if it's fed with 3 AWG…

A: The Length of the load from the panel board is calculated as shown below

Q: Ground fault protection of - equipment shall be provided for solidly grounded wye electrical…

A: The correct answer to the question is: A. 1000 amperes Here's the explanation: 1. Reference to NEC…

Q: termination are frequently used for connecting a conductor to a bus bar.

A: Bus coupler

Q: How many conductor volume allowances should be applied for the equipment grounding conductors in the…

A: We need to answer how many conductor volume allowances should be applied for the equipment grounding…

Q: The required terminal wiring space for 4/0 AWG THHN copper conductors entering a 480-volt…

A: The given wire size is  AWG THHN copper conductors.The wires are entering in a traansformer housing…

Q: Raceways shall not be used as a means of support for Class 2 conductors except under the provisions…

A: Given, Raceways shall not be used as a means of support for Class 2 conductors except under the…

Q: Stator core of alternator is built up of steel sheet lamination of thickness between _____________ .

A: We will discuss the manufacturing of one of the two main components in the making of an alternator.

Q: . A grounded circuit conductor and the equipment grounding conductor should always be joined at the…

A: Choose the correct option A grounded circuit conductor and the equipment grounding conductor should…

Q: Define an equipment grounding conductor. The conductive path that part. of eftective an graund-fault…

A: Grounding is generally a direct physical connection to the earth. Electrical circuits are connected…

Q: Seven 8 AWG copper conductors are run in conduit. Each conductor has type THHN insulation. The…

A: Given Copper wire AWG =8 total number of copper wires =7 Type of insulation THHN Ambient temperature…

Q: A multiconductor cable, optical fiber cable, or flexible cords of two or more conductors is treated…

A:

Q: The minimum size while away for following feeder with Parllel conductor is: a. Two sets of three ,…

A: Conductor: It is a material in which current can easily flow. The conductor has the free electron in…

Q: Motor-circuit conductor ampacity values are in accordance with __________. A. Table 310.15(B)(16)…

A: various tables provided in the National Electrical Code(NEC) which specifies the values at which the…

Q: 8.a. A grounded conductor is a conductor that has been _______ grounded. A. electronically B.…

A: 8.a. A grounded conductor is a conductor that has been intentionally grounded. It is used to carry…

Fiber Optics

Fiber optics is a technology used to transmit the facts such as light or pulses with fiber or plastic over long distances. Visual fibers are about the width of a human hair strand and, when tied directly to a fiber-optic cable, can transmit multiple long-distance records and faster in different ways.