Equipment and circuits c Study guides, Class notes & Summaries

F80 Exam Questions and Answers Graded A After what date was the F-24 certificate of Fitness not recognized. July 31, 2014 How often must this certificate be renewed? Every 3 years In what types of buildings and occupancies are coordinators of fire safety and alarm systems in homeless shelter required? Homeless shelters, one-way voice communication systems, or occupied for more tha n fifteen persons for a period of more than 30 days. What is the certificate of occupancy? Determines the number ...

According to the NEC®, the ampacity of branch circuit conductors must be derated when there are more than how many current-carrying conductors in a raceway? - correct answer 3 Air conditioning overcurrent protective devices can never exceed what percentage of the motor-rated load current or the branch circuit selection current (whichever is greater)? - correct answer 225% Conductors must be derated when installed in conduit - correct answer on or above rooftops Continuous loads are cal...

Complete Solutions Manual for Electrical Wiring Commercial, 18th Edition by Phil Simmons, Ray C. Mullin, Mark C. Ode ; ISBN13: 9780357767108.....(Full Chapters included Chapter 1 to 22)...1. Commercial Building Plans and Specifications. 2. Reading Electrical Working Drawings--Entry Level. 3. General Requirements for Conductors. 4. Branch Circuits. 5. Switches and Receptacles. 6. Wiring Methods. 7. Motor and Appliance Circuits. 8. Feeder Installation and Load Calculation. 9. Special Syste...

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? Select one: a. The load of higher resistance would overheat and probably be damaged. b. The load of lesser resistance would overheat and probably be damaged. c. No effect until one load is turned off or opens. d. No effect. The load of higher resistance would overheat and probably be damaged. Refer to Figure 128.202. ___ volts are applied across the water heater element. S...

There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG correct answer: 4 Thermal insulation shall not be installed within _________inches of recessed lighting fixtures correct answer: 3 A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and on...

Which of the following is true with regard to switchboards Switchboards are used to subdivide large blocks of power When installing wiring within switchgear, use self adhesive cable ties every ___. 12" (300mm) The maximum voltage that a piece of equipment can withstand is known as its ____. Basic impulse insulation level (BIL) Bolted pressure switches are often used in place of ___. Circuit breakers A transformer's temperature rise rating refers to ___. The max...

NEC Exam prep questions and answers, graded A+ There are six conductors in a raceway connected to 75 degree Celsius rated breakers. Each wire has a 70 amp load using THHN conductors. The minimum size conductors used are #_________AWG. A. 4 B. 6 C. 8 D. 10 A. #4 60 degree column (110.14(C)) adjust from 90 degree column 95 x .8 = 76a Thermal insulation shall not be installed within __________ inches of recessed fixtures. A. 1/2 B. 3/4 C. 2 D. 3 D. 3 410.116(B) Brainpower Read ...

Deficiency A ________, in the reasonable judgment of the inspector, is a condition that adversely and materially affects the performance of a system, or component. Inspection Process of examining accessible items, and reporting their condition RESPA Prohibits abusive practices like undisclosed referral fees and kickbacks. Designed to help consumers become more knowledgeable of settlement services costs. Departure Provision The inspector may not inspect an item if the ...

There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG - 4 Thermal insulation shall not be installed within _________inches of recessed lighting fixtures - 3 A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and one equipment grounding conduct...

There are six conductors in a race way connected to 75° C rated circuit breaker. Each wire has a 70 amp load using THHM conductors. The minimum size conductors used our #_________AWG correct answers4 Thermal insulation shall not be installed within _________inches of recessed lighting fixtures correct answers3 A 1 inch conduit contains three wire circuits or a phase system. All conductors are number 10 TW. Each circuit consist of two phase conductors and one grounding conductor and one eq...