Smitty’s Two Minute Drill Photovoltaic Systems

Smitty’s Two Minute Drill Photovoltaic Systems 2017-7
A drill to help you improve your code skills and your ability to find answers in the code book. © Ted “Smitty” Smith 2016, 2017

Directions Left click on the presentation ICON located at the bottom of the slide directory to the left of the this slide or in the top menu under SlideShow. Each slide will transition to the correct answer automatically in 2:00 minutes. The correct answer will transition in 5 seconds. Do not worry about writing down the correct answer for now. You will have the opportunity to do that at the end of the two minute drill Good luck. REMEMBER: To have the best effectiveness, put this presentation in slide show mode and use the timers. This will help you get to 2 minutes per question. Do no worry about the answers until you get through the timed section. Following the timed section, the slides are repeated without time so you can look them up.

NOTICE BECAUSE OF THE LIMITED CONTENT OF THIS DRILL, THE TIME FRAME HAS BEEN REDUCED FROM 2 minutes FOR EACH QUESTION TO 1 MINUTE FOR EACH QUESTION.

Question 1 Circuit conductors between dc-to-dc converters and from dc-to-dc convertors to the common connection point of the dc system is the definition of: A. Diversion Charge Controller B. DC-to-DC Converter Source Circuit C. DC-to-DC Converter Output Circuit D. None of the above Copyright 2017 Ted "Smitty" Smith

Question 1 Answer 690.2 Definitions B.
Copyright 2005 Ted "Smitty" Smith

Question 2 Which of the following is not something that is required to be isolated from conductors that are not solidly grounded on a photovoltaic system? A. Universal Power Monitor B. PV Modules C. dc-to-dc converters D. inverters Copyright 2016 Ted "Smitty" Smith

Question 3 The isolating device for the equipment on a large scale photovoltaic electric power distribution production facility shall be permitted to be located more than ________ meters from the equipment where written safety procedures and conditions of maintenance that only qualified persons service the equipment. A. 3.1 B. 6.7 C. 1.8 D. 2.9 Copyright 2005 Ted "Smitty" Smith

Question 4 Isolating devices or equipment disconnecting means shall be installed in circuits connected to equipment at a location within the equipment, or within line of sight and within _______ feet of the equipment. A. 10 B. 8 C. 25 D. 50 Copyright 2017 Ted "Smitty" Smith

Question 5 Which of the following can NOT be used to contain DC circuits of a PV system that are run inside of a building? Metal enclosures from the point of penetration of the surface of the building to the first readily accessible disconnecting means Metal raceway Encasement in 1” of concrete Type MC metal clad cable that complies with (10) Copyright 2005 Ted "Smitty" Smith

Question 6 Stand alone Photovoltaic systems operating at ________volts dc or greater between any two conductors shall be protected by a listed PV arc-fault circuit interrupter or other system components listed to provide equivalent protection. A. 50 volts B. 80 volts C. 120 volts D. 240 volts Copyright 2005 Ted "Smitty" Smith

Question 7 An adjustable electronic overcurrent protective device rated or set in with is acceptable for providing overcurrent protection for PV system DC circuits? A. Yes B. No Copyright 2005 Ted "Smitty" Smith

Question 8 According to the NEC a large scale photovoltaic electric power production facility has a generating capacity of at least ______________ megawatts and it is not under exclusive utility control. A. 1 MW B. 3 MW C. 5 MW D. 10 MW Copyright 2005 Ted "Smitty" Smith

Question 10 What is the minimum sized copper equipment grounding conductor that can be used for the PV output circuits on a PV system if they have a maximum output of 100 amperes and they are protected by a 125 ampere overcurrent protective device? A. 8 B. 6 C. 4 D. 2 Copyright 2005 Ted "Smitty" Smith

End of Drill Click on this slide to continue to the repeat of the questions. The timer will not operate in this section. Click on each slide to advance. Review the questions and look up the answers. Copyright 2005 Ted "Smitty" Smith