Residential wireman - Study guides, Class notes & Summaries

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. - Answers 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 THW c...

1. A 20-ampere branch circuit requires _____ AWG conductors, ignoring the effects of voltage drop. a. 14 aluminum b. 14 copper c. 12 copper d. 12 aluminum - Answers 12 copper 2. A continuous load shall not exceed _____ of the rating of the branch circuit. a. 125% b. 100% c. 50% d. 80% - Answers 80% 3. A dual-rated conductor marked THHN/THWN is rated_____ when used in dry locations. a. 30°C (86°F) b. 90°C (194°F) c. 60°C (140°F) d. 75°C (167°F) - Answers 90°C 4. A r...

The National Electrical Code not intended as ________. - Answers design specification or as an instrucion manual The provisions of the national electrical code are considered necessary for ________. - Answers safety What is not covered within the scope of the national electrical code? - Answers installation in underground mines Which chapter of the national electrical code covers communications systems? - Answers chapter 8 The informational annexes of the national electrical code are...

When a single branch-circuit with an equipment grounding conductor is supplying a detached garage from a house, what, if any, additional grounding electrode(s) is/are required at the garage? a) A ground rod and underground metal water pipe. b) A metal underground water pipe only. c) A metal underground water pipe and building steel, if available. d) No additional electrodes are required. - Answers D: No additional electrodes are required. Ref: 250.32(A), Ex. The point of attachment of a ...

Ferrous metal enclosures for grounding electrode conductors shall be _____. a) electrically continuous b) electrically isolated c) not permitted d) rigid metal conduit (RMC) only - Answers A: electrically continuous Ref: 250.64(E) Unless listed for the control of other loads, general use dimmer switches shall only be used to control _____. a) switched receptacles for cord-connected incandescent luminaires b) permanently installed incandescent luminaires c) ceiling fans with luminaires...

What is the MAXIMUM allowable cord length for the cord supplying a cord-and-plug connected dishwasher installed under a kitchen counter in a dwelling unit? a) 11⁄2 feet b) 2 feet c) 3 feet d) 4 feet - Answers D: 4 feet Ref: 422.16(B)(2)(2) What is the MINIMUM size copper SE cable with type THHW insulation that may be used as ungrounded, service-entrance phase conductors for a 150 ampere-rated, 120/240-volt, singlephase, residential service? a) 1/0 AWG b) 1 AWG c) 2 AWG d) 3 AWG - A...

The MAXIMUM height that kitchen countertop receptacle outlets may be installed above the countertop shall be _____. a) 12 inches b) 18 inches c) 20 inches d) 24 inches - Answers C: 20 inches Ref: 210.52(C)(5) For dwelling units, panelboards are permitted to be located in all the areas listed EXCEPT _____. a) hallways b) garages c) kitchens d) bathrooms - Answers D: bathrooms Ref: 240.24(E) The MAXIMUM number of grounded conductors allowed to be terminated in an individual termina...

RESIDENTIAL WIREMAN TEST PART EXAMS AND ANSWERS The National Electrical Code not intended as ________. - CORRECT ANSWER-design specification or as an instrucion manual The provisions of the national electrical code are considered necessary for ________. - CORRECT ANSWER-safety What is not covered within the scope of the national electrical code? - CORRECT ANSWER-installation in underground mines Which chapter of the national electrical code covers communications systems? - CORRE...

RESIDENTIAL WIREMAN ELECTRICAL EXAM – LARRY BOBO |2024 ACTUAL EXAM WITH ACTUAL 250 QUESTIONS AND DETAILED CORRECT VERIFIED ANSWERS |PRE-ASSESSED A+ |100% GUARANTEED TO PASS!!