EEL 4015 Electrical Design in Buildings Test # 1 A Fall 2017 1.- The neutral wir

Question

EEL 4015 Electrical Design in Buildings Test # 1 A Fall 2017 1.- The neutral wire is always white a) True b) False 2. Ground-fault Cireuit-Interrupter Protection is necessary in a) bathrooms; b) garages; c) kitchens; d) all of them 3.- When a receptacle is installed in a metallic box it must always be connected to ground through the grounding hex screw. a) True b) False 4.-The allowable ampacity for a # 2/O THHN copper conductor is Amps S.- What size THHN conductor is required to supply a 250 amp feeder? a) No. 1/0 c) No. 3/0 b) No.2/0 d) No. 4/0 6.- What ground conductor is it necessary for two, No. 4/0 copper conductors per phase, installed in parallel (electrically connected at each end to form a single conductor)?

Explanation / Answer

1) the neutral wire is always green colour.. hence given statement is "false"

2) ground fault circuit- interrupt protection is necessary for all electrical circuits... Hence "all of the above" option is right.

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