ELMC Master Electrician Prep Test Exam Questions And Answers Verified 100% Correct

ELMC Master Electrician Prep Test Exam Questions And Answers Verified 100% Correct Branch-circuit conductors within _______ inches of a ballast within the ballast compartment shall have an insulation temperature rating not lower than ______________. a. 6, 85 C b. 3, 90 C c. 3, 75 C d. 3, 60 C - ANSWER 3, 90 C In a Class I Group D location, what kind of gases are present? a. ethylene b. acetylene c. hydrogen d. propane - ANSWER propane What is the demand factor for a single 20.8kW range? a. 18 kw b. 11.6 kw c. 8 kw d. 12.5 kw - ANSWER 11.6 kw How much longer does a box need to be containing #2 straight pull in a 2 inch conduit? a. 5 times b. 8 times c. 6 times d. 4 times - ANSWER 8 times When a motor control center is used as service equipment, which of the following applies? a. it shall not be allowed more than 2 disconnecting means b. it shall be provided with a main bonding jumper c. one pole of the center shall be placed in a permanently grounded conductor d. it shall be provided with a single main disconnecting means - ANSWER it shall be provided with a single main disconnecting means A crane has two motors, one is rated at 30 amps and one is rated at 50 amps. How many amps are in this crane? a. 55 amps b. 50 amps c. 65 amps d. 80 amps - ANSWER 65 amps The conductor between the surge arrestor/lightning protection and the line and the surge arrestor and the ground connection shall not be smaller than: a. 14 awg b. 10 awg c. 6 awg d. 12 awg - ANSWER 6 awg Single-conductor cables installed in an industrial cable tray shall be a minimum of _________. a. 3/0 awg b. 4/0 awg c. 2/0 awg d. 1/0 awg - ANSWER 1/0 awg Where practical, vaults containing more than ________ KVA transformer capacity shall be provided with a drain. a. 50 b. 75 c. 100 d. 125 - ANSWER 100 What is the fire rating of a transformer vault protected by automatic sprinklers? a. 1 hour b. 1/2 hour c. 3 hours d. 2 hours - ANSWER 1 hour Thermostatically controlled switching devices are allowed to serve as a disconnect, when: a. capable of being locked in the closed position b. provided with a marked " off" position c. designed so that the circuit can be energized automatically after the device has been manually placed in the "off" position d. provided with a marked "on" position - ANSWER provided with a marked "off" position Refer to the illustration. Given: Three size 2 AWG conductors feed through this box from the 2 inch conduit on the left side into the 1-1/2 inch conduit on the bottom. What minimum distance is allowed between the 2 inch conduit and the 1-1/2 inch conduit in the bottom left corner (Dimension A)? a. 3-1/2 inches b. 18 inches c. 9 inches d. 12 inches - ANSWER 12 inches If you have 135 kilo ohms and 145 micro amps, what is the voltage? a. 19.575 volts b. 1.9575 volts c. 0.01975 volts d. 1,9575 volts - ANSWER 19.575 volts The purpose of the NEC is to provide _________. a. a design specification for electrical installations