Master Electrician Exam Bundle

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...

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...

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...

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...