CHARGE CONTROLLER 6VDC 6VDC 6VDC 6VDC 350AH 350AH 350AH 350AH BATTERY STORAGE
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- The following problems refer to grounding requirements. Give the source of yourresponses. 1. What is the minimum size copper grounding electrode conductor for a service withthree sets of parallel 350 kcmil conductors (three conductors per phase)?Explain each option & Choose the correct option. 4) The _ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 5) What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 6) You're evaluating the components of a multioccupancy building that won't have an on-site employee. To be compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water pump disconnect ..Draw a simple block diagram for a 24V stand-alone residential PV system powering both DC and AC loads. Show PV array, inverter, battery bank, charge controller, and AC & DC loads. Show PV array modules wired together as 2 series and 4 parallel (2s x 4p) and show their polarity (+ and – terminals) charging a lead-acid battery bank wired 2s x 8p. Show all major components and conductor polarities. For overcurrent devices and disconnects in the appropriate conductor you can simplify in the appropriate leg and show and as a small combined block labeled:
- Most residential general lighting circuits are wired with 14-AWG copper conductors and are protected by 15-amp circuit breakers. However, there are many electricians who install 12-AWG copper conductors and protect them with 20-amp circuit breakers. How will you know which conductor size and which circuit breaker size will be used for the general lighting branch circuits in the house you are wiring?20. A separately derived system is an electrical source, other than a service, having ____ connection(s) to circuit conductors of any other electrical source other than those established by grounding and bonding connections. Select one: A. INDIRECT B. NO DIRECT C. DIRECT D. COMPLETEWhat is the required size of THHN copper conductors for a feeder serving two 208Y/120V, four-wire, three-phase, 75 degrees Celsius branch circuit panelboards, one with a continuous load of 150A and the other a noncontinuous load of 180A
- 6.A. How many grounded neutral conductors are in a 208Y/120 volt, 3-phase, 4-wire system?A. ThreeB. TwoC. FourD. One 6.B. A separate building that's supplied with a feeder or branch service will also need aA. separate EGC from the supply EGC.B. transformer for isolation.C. neutral conductor bonded to ground.D. grounding electrode system.4.a. The ___ calculated load is rarely placed on an electrical system.A. optionalB. standardC. total 4.b. What's the primary disadvantage of using copper conductors?A. CostB. AvailabilityC. Weight 4.c. You're evaluating the components of a multioccupancy building that won't have an on-site employee. Tobe compliant with the NEC, each occupant will need to have access to their ownA. service-disconnecting means.B. service conductor.C. cable attachment point.D. emergency fire water-pump disconnect.grounding and bonding requirements 17. Which of the following is effective when it comes to establishing a bonding connection between a fitting or a raceway and an enclosure? A. Meter enclosures B. Bonded bushings C. Bonding wedge D. Threaded hubs 18. Which of the following is the first line of defense for a premises wiring system served by a grounded utility source? A. The system grounding connection B. The pad-mounted transformer C. The load side of the service point D. The service equipment enclosure
- a. If both elements of the water heater in this residence are energized at the same time, how much current will they draw? (Assume the elements are rated at 240 volts.) b. What size and Type THHN wire is required for the load of both elements? Show calculations.3. Which of the following statements about the use of structural steel as an equipment grounding conductor(EGC) in an AC system is correct?A. Structural steel isn't allowed for use as an EGC.B. Structural steel can be used as an EGC bonding jumper between panelboards.C. Structural steel must have an EGC bonding jumper every three feet of structure.D. Structural steel can be used as an EGC when it's bonded at both ends.11. Which of the following statements about the use of structural steel as an equipment grounding conductor (EGC) in an AC system is correct? A. Structural steel can be used as an EGC when it's bonded at both ends.B. Structural steel isn't allowed for use as an EGC.C. Structural steel must have an EGC bonding jumper every three feet of structure. D. Structural steel can be used as an EGC bonding jumper between panelboards. 12. Which of the following statements about equipment grounding conductors is true? A. They increase voltages above ground potential on conductors and equipment enclosures during normal operation. B. Unacceptable equipment grounding conductors include conduit, tubing, and cable armor. C. They must be capable of withstanding the higher level of ground-fault current to perform their safety function. D. When they're far from their associated circuit conductors, impedance values are kept as low as possible during ground-fault conditions. 13. Imagine that…