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neutral point - The common point on a wye-connection in a polyphase system or midpoint on a single phase, 3-wire system, or midpoint of a single phase portion of a 3-phase delta system, or a midpoint of a 3-wire, direct current system In the NEC the words ___________indicate a mandatory requirement - Shall or shall not On a four wire Delta connected system with a midpoint of one phase winding is grounded, only the conductor or bus bar having a higher phase voltage the ground shall be durab...

In a guardrail system, the guardrails can be made of any of the following EXCEPT: - ANS ropebanding If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: - ANS 9.6 ohms A UL listed rod type grounding electrode must have a minimum length of: - ANS 8' What is the MINIMUM number of overload sensing units required for all three phase motors? - ANS 3 In a circuit of pure capacitance, the current leads...

According to the power triangle, the apparent power is _____. - ANS greater than true power Any exposed live parts must be guarded if they are operating at _____. - ANS 50v or more between terminals. In a split-phase motor, how much greater is the starting current when compared to the full-load current? - ANS 6 to 8 times The capacitor-start motor is the single-phase motor type that has the _____. - ANS highest starting torque For a constant-torque load, t...

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. - ANS THHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system from the local utility company. What is the MINIMUM size aluminum T...

Rings and Jewelry worn on the job are _______________ to an electrical worker. - ANS a hazard A keen sense of what to do or say to maintain good relations or avoid offense. - ANS tact Slight shock felt; not painful but disturbing. Average individual can let go. Strong involuntary reactions can lead to other injuries. These reactions best describe a current of ? . - ANS 5 mA Extreme pain, respiratory arrest, severe muscular contractions. Death is possible. These r...

kinetic energy - ANS Energy in motion or released potential energy potential energy - ANS stored energy due to position Example of potential energy - ANS water behind a dam Example of kinetic energy - ANS when water falls through a dam and is used to generate electricity sources of energy used to produce electricity - ANS coal, nuclear power, natural gas, oil, wind power, solar power, and water Energy is converted into - ANS motion, ...

the stage of wiring when you install and terminate devices and fixtures is known as - ANS trim-out To install wiring in a commercial building you need to learn how to bend conduit - ANS true Electricians who work in factories are known as - ANS Industrial electricians Like construction, electricians, maritime electricians must follow the NEC - ANS true How many years does it typically take to complete the NCCER electrical training program? - ANS ...

Where would a electrician find information concerning the use of personal protectove equipment? - ANS Occupatinal health and safety Act When is an electrical permit obtained? - ANS Prior to beginning any electrical work Unless walls are solid rock what is the maximum height a trench may be before it must be properly sloped, shored or protected by a trench box? - ANS 1.5 meters according to occupational health and safety How is a confined space determined? - ANS ...

Which if the following is not considered a residential electrical system competent? - ANS Load monitoring display Installing nail on device boxes, panelboards, and lighting fixtures in new houses are tasks performed by - ANS Residential Eletricans Electrical devices the produce arcs when installed in volatile environments are sealed in special enclosure to prevent - ANS Explosions To install a raceway system without materials, an electrician must be skilled in - ...

a molecule of matter can be divided chemically into smaller particles called? - ANS atoms matter consisting of all the same kind of atoms is called an? - ANS element matter consisting of two or more different kinds of atoms is called a? - ANS compound the negative charge of a single electron is called a? - ANS unit electrical charge most of the mass of an atom is in the? - ANS nucleus when an atom gains an electron, it is called? - ANS ...

branch circuit - ANS That portion of a wiring system extending beyond the final overcurrent device is called the: Calculated load - ANS The final sum of the computed loads, based on the minimum code requirements, is the Resistance - ANS As compared to #10, a #8 wire of the same Iength has less: 0.001 inch - ANS One circular mil is the area of a circle whose diameter is: 1,000,000 cm - ANS A round bus-bar one inch in diameter, has a circular mil...

Electrical equipment rooms or enclosures housing electrical apparatus of not over 1000 volts that are controlled by a lock (s) shall be considered accessible to _____. A. qualified persons only B. electricians only C. the building management D. the authority having jurisdiction - ANS A. qualified persons only 110.26 (F) pg. 49 Where the premises wiring systems has branch-circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch-circuit sh...

To cause inflation, closing of the ________ is required to provide the power-side voltage to the inflator module. - ANS Arming Sensor A(An) ________ is the time and distance between two consecutive points, either high or low. - ANS Wavelength Technician A says that FM requires an antenna whereas AM may be heard from a radio without an antenna. Technician B says that the radio antenna may be a component of the rear window glass. Which technician is correct? - ANS Tec...

How many hours is considered continuous load and its percentage when calculating a continuous load? - ANS 3 hours or more and calculated at 125% percent what does VA stand for? - ANS Volt-Amperes How many VA are required in a barbershop? - ANS 33 VA How many VA are required in a restaurant? - ANS 22 VA Show Windows shall be calculated at _____ VA per feet? - ANS 200 volt-ampere What are standard ampere rating for breakers and fuses? - ANS ...

Which of the following personal protective equipment (PPE) are most frequently used on construction jobsites - ANS hard hat, ear protection, safety glasses If two CPR trained individuals arrive at an apparent heart attach, while one individual is performing CPR, the second person should perform which two of the following - ANS call 911, if this has not already been done, relieve the first person if they need assistance or become tired Where would an employee look to determi...

What is the minimum value of the permitted test result for the insulation resistance test of a three-phase, 400V, mains cable? - ANS 1MΩ When carrying out testing on a low voltage electrical installation, which document details the tests and checks required to be carried out? - ANS AS/NZS 3000 What is the minimum or maximum test result value you would consider acceptable for an Earth Continuity test? - ANS 1Ω or less State TWO types of electrical protection pro...

Given: Two separate Services are identical in voltage and amperage, except that one service serves only motor - loads and the other serves lighting loads only. in the event of a short circuit in these services, the available short circuit current will be: A) The same in either service B) Higher in the motor-load service C) Higher in the lighting -load service D) 25% greater in the service for the motor load - ANS The same in either service (general knowledge) A d...

NEC Article ______ defines breakers and fuses. - ANS According to NEC Article 100, a device that opens and closes a circuit by nonautomatic means automatically closes for a predetermined overcurrent. Annex _____ of NEC covers conduit fill. - ANS Annex C of NEC covers conduit and tubing fill for conductors and fixture wire fill. NEMA stands for National Electrical Manufacturers Association - ANS True - NEMA is the acronym for National Electrical Manufacturers Associa...

In the American wire gauge, the CMA doubles every - ANS 3 wire sizes That portion of a wiring system extending beyond the final overcurrent device is called - ANS Branch Circuit As compared to a #10, a #8 wire of the same length has less - ANS Resistance The resistance of copper wire is - ANS Inversely proportional to its length The reciprocal of resistance is - ANS Conductance The combination of resistance, capacitance and inductance of an ...

romex - ANS -nonmetallic sheathed cable -consists of 2 OR MORE plastic insulated & ground wire surrounded by a MOISTURE-RESISTANT plastic jacket -can be used in WOOD STUD residential building & buildings not exceeding 3 floors as long as it is used with wood studs and protected from damage by being concealed behind walls & ceilings staples - ANS used by electricians to secure romex cables nail on box - ANS a box to be secured on to wooden stud to house electrical ...