Professional guidance

With the unemployment rising, large numbers of people are forced to live their job. It is hard to find a high salary job than before. Many people are immersed in updating their knowledge. So people are keen on taking part in the PVIP exam. As you know, the competition between candidates is fierce. If you want to win out, you must master the knowledge excellently. Now our PVIP training quiz: PV Installation Professional (PVIP) Board Certification is your best choice. With the assistance of our study materials, you will advance quickly. Also, all PVIP guide materials are compiled and developed by our professional experts. So you can totally rely on our PVIP exam simulating to aid you pass the exam. What is more, you will learn all knowledge systematically and logically, which can help you memorize better.

No restrictions to your usage

Our PDF version, online test engine and windows software of the PVIP exam simulating has no restrictions to your usage. You can freely download our PDF version and print it on papers. Also, you can share our PVIP training quiz: PV Installation Professional (PVIP) Board Certification with other classmates. The online test engine of the study materials can run on all windows system, which means you can begin your practice without downloading the PVIP guide materials as long as there have a computer. Also, our windows software support downloading for many times. What is more, you can install our PVIP exam simulating on many computers. All of them can be operated normally. The three versions of PVIP guide materials are excellent. Just choose them as your good learning helpers.

Skills and knowledge renewal

In modern society, everything is changing so fast with the development of technology. If you do no renew your knowledge and skills, you will be wiped out by others. Our PVIP guide materials also keep up with the society. After all, new technology has been applied in many fields. It is time to strengthen your skills. Our PVIP exam simulating will help you master the most popular skills in the job market. Then you will have a greater chance to find a desirable job. Also, it doesn't matter whether have basic knowledge about the PVIP training quiz: PV Installation Professional (PVIP) Board Certification. You will soon obtain the knowledge and apply it in your work, which can help you finish your tasks efficiently. Then you do not need to work overtime. It is necessary to learn our PVIP guide materials if you want to own a bright career development.

As old saying goes, no pains, no gains. You must depend on yourself to acquire what you want. No one can substitute you with the process. Of course, life has shortcut, which can ensure you have a bright future. Our PVIP training quiz: PV Installation Professional (PVIP) Board Certification will become your new hope. If you are ambitious and diligent, our study materials will lead you to the correct road. Thousands of people have regain hopes for their life after accepting the guidance of our PVIP exam simulating. You should never regret for the past. Future will be full of good luck if you choose our PVIP guide materials. We will be responsible for you.

NABCEP PV Installation Professional (PVIP) Board Certification Sample Questions:

1. A residential PV system uses two 120.240Vac utility-interactive inverters with a sealed lead-acid battery energy backup for protected loads. The MOST important protected load consideration when operating in the backup mode is that:

A) The stand-alone system configuration can adequately supply current to all protected load branch circuit.
B) The peak current from the sealed lead- acid batteries must not exceed peak demand currents.
C) The protected loads must have automatic restart function.
D) All protected loads are connected in multiwire branch circuits.

2. Which of the following is an NEC requirement regarding access for large-scale PV electric power production facilities?

A) All fencing and associated gates must have ac and dc current and voltage exposure labvels and must be electrically isolated from the solar facility.
B) Field-applied hazard markings must be installed, and access to the supply station is to be restricted by fencing or other adequate means.
C) Access to remote isolating equipment for servicing is allowed for individual other than qualified persons when the equipment is enclosed within a secure structure.
D) Arc flash warning labels must be field-applied by the installer at all access points for qualified persons and at the point of the utility interconnection directory.

3. A grid-connected PV system on a dwelling is producing 30% less power than expected. The conductors from threes strings of modules enter into a 3-pole fused dc disconnect, and each ungrounded conductor is connected to a separate pole. On the inverter side of the switch terminals, the three strings are combined. The dc disconnect switch is opened. The voltages on the array side of the switch are 440 on string #1, 444V on string #2, and 0V on string #3. The dc disconnect is then closed and the inverter resumes operating, still producing about 30% less power than expected. A clamp-on ammeter is used to measure the dc current of each string of each string of modules where they enter the rooftop junction box. The operating currents of each string are 3.9A for string #1, 3 85A for string #2, and 4.3 A for string #3. What is the MOST likely with the system?

A) Positive and negative output conductors of string #3 are faulted together.
B) A ground fault is causing the current from strings #1 and #2 to flow into string #3.
C) There is lower module mismatch in string #3 than in string #1 and #2.
D) String #3 has an open connection and is not contributing any voltage.

4. When performing a system checkout after completing the installation, what is the SAFEST sequence of tasks to detect installation errors before closing any disconnects to the inverter, charge controller, or batteries?

A) Install source circuit fuses, verify that all equipment-grounding conductors are secure, and measure ac line voltage.
B) Perform visual inspection, check polarity and measure open-circuit voltage.
C) Perform visual inspection, install source circuit fuses, and measure open-circuit voltage.
D) Perform visual inspection, install source circuit fuses, and measure open-circuit current.

5. An installer is hired to troubleshoot a 10-year-old roottop system with open-circuit voltage of 300V. The ground-fault detection (GFD) device has tripped. The insulation on the exposed source circuit cables has deterlorated with multiple cracks and has no flexibility. Which concern is the MOST likely safely issue when servicing this array?

A) Short-circuit current is present at the PV source-circuit terminals of the disconnect device because of electrical leakage.
B) Insulation has become an electrical conductor since it has changed its composition.
C) Ungrounded conductors are conducing current event the ground-fault device has activated.
D) Cracked insulation has allowed water intrusion that resulted in oxidation of the copper conductors.

Solutions: