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Question 1 of 100
Which of the following does a microgrid not do?
Question 2 of 100
Which type of microgrid is connected to a traditional utility, capable of operating in island mode, and has multiple generators and sophisticated controls?
Question 3 of 100
Microgrids are considered sustainable when their energy sources are renewable.
Question 4 of 100
When installing a combined heat and power (CHP) microturbine
Question 5 of 100
The components of a typical fuel cell include an anode, cathode, and an electrolyte membrane.
Question 6 of 100
Other sources of electrical generation technologies for microgrids include
Question 7 of 100
An ESS is commonly referred to in what units?
Question 8 of 100
Which of the following is the most common voltage for batteries comprising a small UPS energy storage system?
Question 9 of 100
Battery specifications typically include:
Question 10 of 100
Batteries are rated according to?
Question 11 of 100
Which of the following best describes a 0.5 C-rate (or C/2) during a discharge?
Question 12 of 100
Which of the following are alternate types of energy storage?
Question 13 of 100
To dispose of batteries properly, contacting the manufacturer is an appropriate first step.
Question 14 of 100
In a PV system which is grid connected, which of the following is not necessary for supplying electricity to the utility company?
Question 15 of 100
A microinverter typically connects to
Question 16 of 100
A battery array is constructed of 144 series modules of 48 parallel LiCoO2 cells (18650s) with a system nominal voltage of 532 Vdc and system nominal capacity 124.8 AH. Calculate the nominal voltage of each cell.
Question 17 of 100
An battery array is constructed of 144 series modules of 48 parallel LiCoO2 cells (18650s) with system nominal voltage of 532 Vdc and system nominal capacity of 124.8 AH. Calculate the current delivered at a 2C rate.
Question 18 of 100
The ratio of the density of electrolyte to the density of water is specific gravity which correlates to:
Question 19 of 100
The battery output conductors are always terminated to the battery before the disconnect.
Question 20 of 100
DC disconnect switches, both fusible and non-fusible, share similar traits with ______ across all voltage ranges.
Question 21 of 100
Thermal protection in a circuit breaker protects against short circuits and faults, which are drastically larger than overload.
Question 22 of 100
What is the final step prior to opening or entering ESS equipment?
Question 23 of 100
Single batteries, no longer in strings, do not have to be discharged to a recommended shipping voltage or SOC prior to removal and packing for disposal.
Question 24 of 100
An unapproved lubricant used when sliding batteries onto racks could deteriorate the battery enclosures causing them to eventually leak.
Question 25 of 100
Acceptance testing procedures for batteries includes:
Question 26 of 100
IEE 1187-2013 states that if the manufacturer has not provided sufficient information one should:
Question 27 of 100
If you have questions concerning the overall installation of batteries, you should:
Question 28 of 100
Li-ion batteries present racking risks because of
Question 29 of 100
What is required by OSHA 29 CFR 1910.151(c) if any person is exposed to injurious corrosive materials?
Question 30 of 100
Spill containment is dictated by
Question 31 of 100
One should never lift or move a battery by its
Question 32 of 100
Which of the following are concerns that need to be addressed when staging batteries on a job site?
Question 33 of 100
Active ventilation is required for all batteries that may release gas.
Question 34 of 100
One should not work from top to bottom when there is a tipping hazard:
Question 35 of 100
This image is an example of a:
Question 36 of 100
A lithium-ion battery has a 1C rated capacity of 128ah, what is a likely capacity at a 2C-rate?
Question 37 of 100
IEEE installation procedures state that as cells are installed one should:
Question 38 of 100
It is impossible to lock out voltage from the terminals of batteries other than by providing an insulation barrier.
Question 39 of 100
The parallel connection of batteries or battery segments greatly increases the potential of short-circuit current and may change the PPE category and arc-flash boundary.
Question 40 of 100
Which of the following are common connectors recommended by battery manufacturers?
Question 41 of 100
A common corrosion inhibitor used for battery terminals is:
Question 42 of 100
When making battery connections, _____________ could be the result of over-torque.
Question 43 of 100
Which finely stranded cable has 19 strands of cable in sizes 18 AWG to 2 AWG, 37 strands of cable in sizes 1 AWG to 4/0 AWG, and 61 strands of cable in sizes 250 kcmil to 500 kcmil?
Question 44 of 100
Fine stranded cables are terminated with
Question 45 of 100
Voltage drop in dc systems is a __________.
Question 46 of 100
The series connections of battery modules require an increase in conductor size.
Question 47 of 100
2020 NEC 706.31 Overcurrent Protection states that overcurrent protection devices, either fuses or circuits breakers, used in any dc portion of an ESS shall have the appropriate voltage, current and interrupting ratings for the application.
Question 48 of 100
The ampacity of the feeder circuit conductors from the ESS to the wiring system, serving the loads to be serviced by the system, shall not be less than the greater of the:
Question 49 of 100
Cable insulation properties and applications are covered in NEC  Table 310.104(A), and/or NEC  Table 310.4(A).
Question 50 of 100
The best shield to prevent interference in a BMS is
Question 51 of 100
Ethernet cabling must be terminated in a specific pair order
Question 52 of 100
What has a practical working limit of 100m?
Question 53 of 100
In an ungrounded (floating) PV system, which conductor(s) is (are) switched when disconnected?
Question 54 of 100
Grounding is done to limit hazardous ______ exposure.
Question 55 of 100
Which of the following can be used to create a bond?
Question 56 of 100
Section 250.4(B) Ungrounded Systems, of the NEC covers
Question 57 of 100
When a dc system is on the premises, where can the grounding electrode conductor be located?
Question 58 of 100
DC systems must be ________
Question 59 of 100
Out of the following options, which one is not a part of BMS systems and controls
Question 60 of 100
Common types of manufacturers specifications for control and communication wiring include
Question 61 of 100
A BMS balances batteries by removing charge from the most-full cells to leave room for charging or adding resistances so the others can catch up.
Question 62 of 100
Modbus RTU serial cabling typically requires what at the end of the line?
Question 63 of 100
Which of the following governs ESS electrical safety, emergency shutoff, workspace, electrical connections/installation on the customer side of the meter?
Question 64 of 100
Safe energy storage equipment, installations, and systems pertain to:
Question 65 of 100
NFPA 70, Article 710 states that all ESS equipment shall be listed and labeled or field labeled for its intended use.
Question 66 of 100
Energy Management Systems are designed so that they can override any alternate power sources for fire pumps, health care facilities, emergency systems, legally required standby systems and critical operations power systems.
Question 67 of 100
Cables used in ESS systems installed in buildings must comply with NEC classifications
Question 68 of 100
Li-ion batteries may create thermal injury hazards caused by overheating.
Question 69 of 100
What are the causes for internal short circuiting in Lithium-ion battery?
Question 70 of 100
The general inspection of batteries and the location of installation should address:
Question 71 of 100
Which of the following is an electrical hazard associated with battery energy storage systems?
Question 72 of 100
Which of the following batteries requires rewatering?
Question 73 of 100
Applying charge to an over-discharged Li-ion battery can result in overheating and fire.
Question 74 of 100
Thermal runaway is a common concern for
Question 75 of 100
The safety diamond represents:
Question 76 of 100
It is safe to charge a lithium battery without a high voltage cutoff.
Question 77 of 100
Splash proof goggles are required when working with electrolyte while wearing a face shield
Question 78 of 100
Which of the following PPE should be used when placing wet cell batteries in racks?
Question 79 of 100
Rain gear can be used to protect from chemical spills without being evaluated per ASTM1296
Question 80 of 100
Vaporized lead exposure is a chemical hazard when working in a battery room.
Question 81 of 100
Which of the following is not listed as Category 1 PPE for arc flash and shock risk?
Question 82 of 100
NFPA 70E Table 130.7(C)15(b) “Arc-Flash PPE Categories for Direct Current (dc) Systems” cannot be used for systems with voltages greater than:
A neutralizing agent, rubber gloves and containment bag are part of a _________.
Question 86 of 100
A field-expedient neutralizing agent is ______.
Question 87 of 100
What type of hazard is created when two workers remove damaged Li-ion modules from a system?
Question 88 of 100
NFPA 70E, Article 320 states that it is ok to wear metal jewelry such as a watch or ring as long as it is covered by insulated rubber or leather gloves.
Question 89 of 100
NFPA 70E 110.6(A)(1) states that employees do not have to be trained on an appropriate test instrument to verify the absence of voltage if a battery energy storage system is locked out and tagged out.
Question 90 of 100
Article 130.5 states that it is acceptable to use the results of an incident energy analysis to specify the Arc Flash PPE Category from Table 130.7(C)(16).
Question 91 of 100
NFPA 70E 110.6(A)(1) Qualified Person states that in addition to Article 110 general requirements for ESRWP workers shall also be familiar with:
Question 92 of 100
Which of the following is not determined by a shock risk assessment performed for an energized electrical work permit?
Question 93 of 100
According to NFPA 70E Section 110.4 Energized Work, additional hazards or increased risks include:
Question 94 of 100
Moveable or fixed conductors and circuit parts changes the _________ boundary, but not the ________ boundary.
Question 95 of 100
The restricted approach boundary (RAB) for dc exposure at 480 volts is:
Question 96 of 100
NEC 480.7(C) states that battery circuits, where exceeding ________ nominal between conductors and ground, shall have provisions to disconnect the series-strings into segments.
Question 97 of 100
Non-insulated (standard) tools can be used on segmented battery arrays.
Question 98 of 100
According to Article 110.4(C) work on equipment operating at less than 50-volts does not need to be de-energized if it is determined there is no additional increased exposure to electrical burns or explosion due to electric arcs.
Question 99 of 100
If a dc feeder between a battery array and disconnect needs to be removed, what end should be removed first?
Question 100 of 100
What typically has a greater fault current?
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