Master Electrician License EXAM BUNDLE(COMPLETE PACKAGE) Questions and Answers (Graded A+)

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) H...

If the cover for an underground pull box used for circuits over 600v is not locked, bolted, or screwed into place, then it must weigh equal to - ANSWER-100 pounds The maximum total voltage droop on a branch circuit is - ANSWER-3% the floors of vaults in contact with the earth shall be of concr...

Type ____ is multiconductor cable identified for use as underground service entrance cable. - ANSWER-Type USE cable Knife switch rated for more than 1200 Amps at 250Volts or less - ANSWER-Can be used only as isolating switch, shall not be opened under load Track lighting with outlets in a bath...

According to the National Electrical Code, the minimum size TW copper conductor for a 5 HP, 3 phase, 230 volt, squirrel cage motor started at full voltage shall not be less than # ___ AWG. - ANSWER-14 How many AWG #12 THHN conductors are allowed in a 1" RMC nipple? - ANSWER-35 wires How m...

NEC Article ______ defines breakers and fuses. - ANSWER-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. - ANSWER-Annex C of NEC covers conduit and tubing fill...

A 150 kVA service transformer has a 480Y/277 volt 3-phase primary and a 208Y/120 volt, 3-phase secondary. What is the approximate full-load ampere rating of the primary of the transformer? - ANSWER-180 amperes Where a conductor is marked RHW-2 on the insulation what does the "-2" represent? - A...

1. Disregarding exceptions, dry-type transformers located indoors having a rating of greater than _____ shall be installed in a transformer room of fire-resistant construction. A. 75 KVA B. 87 1/2 KVA C. 112 1/2 KVA D. 50 KVA - ANSWER-C- 112 1/2 KVA 450.21(B) pg 335 2. What is the MINIMU...

In a farm building where livestock is housed and an equipotential plane system is required because wire mesh or other conductive elements are embedded or placed under concrete and bonded to metal structures that could become energized, the equipotential plane is necessary to minimize _____ differenc...

neutral point - ANSWER-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 re...

The ordinary direct current series motor does not operate satisfactorily with alternating current. One of the main reasons for this is a. excessive heating due to eddy currents in the solid parts of the field structure b. that the armature current and field current are out of phase with each ot...

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XC - ANSWER-______ is the letter(s) used to indicate capacitive reactance in a circuit. A) XL, B) Z, C) HZ, D) XC Conductors drawn from a copper-clad aluminum rod with the copper metallurgically bonded to an aluminum core. The copper forms a minimum of ________ percent of the csa. - ANSWER-10 ...

If the cover for an underground pull box used for circuits over 600v is not locked, bolted, or screwed into place, then it must weigh equal to - ANSWER-100 pounds The maximum total voltage droop on a branch circuit is - ANSWER-3% the floors of vaults in contact with the earth shall be of concr...