(a) A rod of length l is moved horizontally with a uniform velocity ' v ' in a direction perpendicular to its length through a region in which a uniform magnetic field is acting vertically downward. Derive the eion for the emf induced across the ends of the rod. (b) How does one understand this motional emf by invoking the Lorentz force acting on the free charge carriers of the conductor? 250.66 Size of Alternating-Current Grounding Electrode Where the grounding electrode conductor is connected to a single or multiple rod, pipe, or plate electrode(s), or any combination thereof, as permitted in 250.52(A)(5) or (A)(7), that portion of the conductor that is the sole connection to the grounding electrode(s) shall not be required to be larger than 6 AWG copper wire or 4 AWG aluminum wire.
AACSR is a concentrically stranded conductor composed of one or more layers of Aluminium -Magnesium -Silicon Alloy wire stranded around a high strength coated steel core. The core can be of either single wire or stranded multi wire. AACSR is available with steel core of Class A, B or C galvanizing or Aluminium clad (AW). ASTM B8 - 11(2017) Standard Specification for Concentric The conductors shall be classified as follows:Class AA, Class A, Class B, Class C, and Class D. Sizes, number of wires, and diameter of wires in the various classes of concentric-lay-stranded conductors shall conform to the prescribed requirements. Welds and brazes may be made in rods or in wires prior to final drawing. Article 810:Radio and Television Equipment EC&MThe grounding conductor must not be smaller than 10 AWG copper or 17 AWG copper-clad steel or bronze. Copper-clad steel or bronze wire (17 AWG) is often molded into the jacket of the coaxial cable to simplify the grounding of the satellite dish by eliminating the need to run a separate ground wire to the dish [810.21(F)(1)].
Must be like material to the conductor. 2. Two bolts to ground rod minimum, for mechanical. 3. Cable to cable connections can be installed with one bolt, two bolt, or compression. 4. Cable to steel structure must have 8 in.2 contact with steel. 5. Heavy duty stacks mechanical only. 6. On all connectors with heavy duty stack Best Electrical Code Final Part 1 Flashcards QuizletB. underground conductor C. electrical supply source A. at least 20 ft of 1/2 in. or larger steel reinforcing bars or rods B. at least 20 ft of bare copper conductors of 4 AWG or larger C. a or b Grounding electrode conductors of wire type shall be _____ . A. solid B. stranded C. insulated or bare Compression Connectors Grounding & Bonding Data Conductor - Rod Size Range. 1/2 in 4. 1 in 3. 3/4 in 6. 5/8 in 7. Show More Show Less. Conductor Type. CU C Grounding and Bonding Connectors>"Hyground" Compression Grounding Connectors>Wire to Ground Rod 2. Show More Show Less. Product Type. Compression 188. Figure 6 1. 1/8 " Thick Steel and Copper Busbar to 4/0 AWG - 1/0 AWG Str
a. not grounded at both ends of the wire b. grounded at both ends of the wire c. floated on both ends d. always ungrounded. not grounded at both ends of the wire. A pulling line is usually made of _____. a. stranded wire b. wire rope c. steel tape d. nylon or other synthetic material NEC Table 310.15(B)(16) covers conductors rated up to 2 EHS Galvanize Strand 7/8 7/10 7/12 SWG Stay Wire, View 7 SWG Size:7/8 SWG Stay wire:7/4.0mm. 7/10 SWG stay wire:7/3.15mm. 7/12 SWG stay wire:7/2.5mm . Application of stay wire . Messenger Wire, Overhead Ground or Static Wire, Guy Wire. Grade . Utilities, Common, Siemens-Martin, High Strength and Extra High Strength . Finish Coatings Class A, B and C and Bezinal, a superior corrosive coating of 5% Engineering Design - Aluminumaluminum-conductor steel-reinforced (steel wire rein used for insulated conductors, are those with Class B, C, D, or even finer strandings. These have more wires for a given size of conductor than used for Class AA or A stranding. Wires of softer temper than the usual hard drawn wires can be used.
In cable trays, single conductor EGCs can be insulated, covered, or bare. But they must be 4 AWG and larger [392.10(B)(1)(c)]. As you can see, the changes to Art. 250 were extensive. However, most of the changes clarify existing technical concepts, rather than replacing them with new ones. MCQ Questions for Class 10 Science Magnetic Effects of Jul 11, 2020 · (b) the coil of wire and galvanometer (c) the coil of wire and magnet (d) the magnet and galvanometer. Answer/Explanation. Answer:c Explanation:(c) The relative motion between the magnet and coil of wire causes change in magnetic field lines linked with the coil to produces induced current if the circuit is closed. MCQ Questions for Class 8 Science Chapter 14 Chemical Oct 03, 2020 · You can refer to NCERT Solutions for Class 8 Science Chapter 14 Chemical Effects of Electric Current to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Chemical Effects of Electric Current Class 8 MCQs Questions with Answers. Choose the correct option. Question 1.
Answers:(c) Both inside and outside the rod Q3:Consider a current i flowing through the inner conductor of a coaxial cable and the current returns along the outer conductor of the cable. The value of magnetic induction at a distance r from the axis is Non - Quality Steel Wire Cable & Galvanized Steel Wire Aluminum alloy 1350-H-19 wires, concentrically stranded about a steel core. Core wire for ACSR is available with class A, B, or C galvanizing; ""aluminized"" aluminum coated (AZ); Or aluminum-clad (AW). Additional corrosion protection is available through the application of grease to the corrosion or infusion of the complete cable with grease. NEC Article 250:Grounding and BondingGrounded Conductor (Neutral) Equipment Grounding Conductor 250.118, T250.122 Bonding Service Raceway 250.102(C) Bonded (Bonding). Connected to establish electrical continuity and conductivity. Bonding Conductor or Jumper. A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected.