Disconnecting means - Study guides, Class notes & Summaries

A fitting is a part of a wiring system that is intended primarily to perform which type of function? - Answer mechanical When the disconnecting means of a transformer is located remotely it must be? - Answer lockable If installed and routed on the outside of a raceway, the length of the equipment bonding jumper shall not exceed how many feet? - Answer 6 feet What is an askarel? - Answer a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media In ...

imum run length of a 18AWG fixture wire that is tapped on to a 20 amp branch circuit? - ANSWER 50' When the service disconnecting means is a power-operated switch or circuit breaker, it shall be able to be opened by hand in the event of a - ANSWER power supply failure Conductors are considered outside a buildings when they are buried under not less than - ANSWER 2 in of concrete In straight pull, the length of the box shall not be less than. ____times the trade size of the largest ...

Fire Alarm Code? - Ans NFPA 72 National Electric Code? - Ans NFPA 70 AHJ? - Ans Authority Having Jurisdiction Disconnecting means for fire alarm power shall be what color? - Ans Red If a combination audible visible appliance is installed, the location of the installed appliance shall be determined by the requirements of... - Ans The visible appliance

The minimum size equipment grounding conductor for a 100 ampere, 120/240 volt single phase underground dwelling feeder whose ungrounded conductors have been increased in size from 3 AWG copper to 1 AWG copper is __ AWG copper Ampacities, Grounding 250.122(B) Table 250.122 Table 8 Ch 9 - Answer-4 The continuity of the grounded conductor shall depend on a busbar or __ only. Continuity, Grounded conductors 200.12 - Answer-wire. Each multi-wire branch circuit shall be provided with a means t...

IEC First Year Exam Study Guide Questions with Verified Solutions ___ can be described as the point of demarcation between where the serving utility ends and the premises wiring begins. Service Point A 12/3 cable is installed from a 120/240-V, 1Ø panel and feeds a split-wired duplex receptacle. One "hot" is connected to a 20A breaker in panel space 1. The second "hot" is connected to a 20A breaker in space 3. A 16-amp load is connected to the upper receptacle and a 14-amp load is ...

NETA level II exam with Verified Answers Graded A+ 1. What is the preferred method of performing primary-injec- tion testing on a low voltage circuit breaker with ground fault protection? 2. At what current level does ventricular fibrillation occur? 3. What is the LET-GO current threshold? 4. Meter Sockets and meter dis- connect switches should be connected on the load side of a service disconnecting means. 5. Which standard addresses equipment grounding? 6. A moving iron meter ...

Journeyman Electrician 2 Exam Questions with Correct Answers In general, motor control circuits shall be arranged so that they will be disconnected from all sources of supply when _____. a) the disconnecting means is in the open position. b) the disconnecting means is not within sight of the controller c) the disconnecting means is integral with the controller d) installed in a motor control center - Answer-A: the disconnecting means is in the open position. Ref: 430.75(A) Which of th...

Journeyman Electrician Questions With Solutions 100% Solved The NEC defines a continuous load to be a load where the maximum current on the circuit is expected to continue for at LEAST____ hours or more? three The service disconnecting means for each electrical service shall consist of NOT more than _____ switches or circuit breakers, mounted in a single enclosure or in a group of separate enclosures. six Given: You have determined a conductor has a computed allowable ampacity of 75 a...

B. proton - CORRECT ANSWER-A(n)___is a positively charged particle that also exists in the nucleus of the atom. A. neutron B. proton C. electron D. none of the above C. valence shell - CORRECT ANSWER-A(n)___ is the outermost shell of an atom and contains the electrons that form new compounds. A. electron shell B. proton covering C. valence shell D. valence electron A. transformer - CORRECT ANSWER-A(n)___ is an electric device that uses electromagnetism to change (step-up or step-...

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? a. The load of higher resistance would overheat and probably be damaged. b. The load of lesser resistance would overheat and probably be damaged. c. No effect until one load is turned off or opens. d. No effect. a. The load of higher resistance would overheat and probably be damaged. Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9 i...