Enphase Solar PV Installation Certification Training

What is the ratio between microinverters and PV modules in an Enphase PV system?

1:1

Enphase recommends that from the point of supply to the AC isolator, PV system designs should keep Vrise under _____.

2%

What are the maximum number of circuits that can be installed in an Enphase Combiner 3?

4

How many models of inverters are currently in the IQ7 line? A. 4; The 7, 7+, 7A, & 7X B. 1; Just the IQ7 C. 2; IQ 7 & 7A

4; The 7, 7+, 7A, & 7X

To verify wire phasing you will need to take two measurements with a voltmeter. L1 at the main breaker and L1 at the Envoy's power terminal block. This measurement should read ________ if phasing is correct. If incorrect, the measurement should read ________. A. 0 volts, 240 volts B. 240 volts, 0 volts C. 0 volts, 120 volts D. 120 volts, 120 volts E. None of the above

A. 0 volts, 240 volts

What is the maximum circuit breaker current size allowed for each PV AC branch circuit using a 1 phase Q relay in single phase installations? A. 20 AMP B. 15 AMP C. 32 AMP D. No maximum it depends on microinverter count

A. 20 AMP

Using the picture, which button initiates the Envoy's AP mode? A. A B. B

A. A

What is a current transformer? A. A current measuring device B. A device that measures DC voltage C. A device that data to the microinverters

A. A current measuring device

What is a single point of failure? A. A part of a system that, if it fails, will stop the entire system from working B. A part of a system which is somewhat important to the normal function of a system C. A part of a system that, if it fails will nominally impact the effectiveness of the system

A. A part of a system that, if it fails, will stop the entire system from working

What does a CT measure? A. AC current B. AC voltage C. DC voltage

A. AC current

(Complete the sentence) In order to measure the current from the utility, make sure the CT arrow is facing ______ the utility, towards your loads. A. Away from the utility and towards the loads B. Away from the utility and away from the loads C. Towards the utility and away from the loads

A. Away from the utility and towards the loads

When installing the CTs, what two items can be verified for correct polarity? A. CT sensor B. CT wiring at the Envoy terminal blocks C. Neutral and grounding bar D. A & B

A. CT sensor

Select the parts of the CT (Select all that apply): A. Core B. Primary conductor C. Secondary windings

A. Core C. Secondary windings

____________ uses the activation to link the customer and the site to Enphase. A. Enlighten B. The internet C. Envoy D. The microinverters

A. Enlighten

What governing body sets federal and statewide safety standards? A. OSHA B. Congress C. The State Department D. The President

A. OSHA

What communication protocol does the Envoy use to communicate with the microinverters? A. Powerline communications (PLC) B. Cell C. Ethernet D. Wi-Fi

A. Powerline communications (PLC)

What is used to seal, insulate and protect cut Q cable ends? A. Q Terminator Cap B. Field-wireable connectors C. Q Sealing Cap D. Shipping caps

A. Q Terminator Cap

What is the internet protocol used for? A. Sending data between the Envoy to Enlighten B. Communicating data between the Envoy and microinverters C. Sending data from Enlighten to your microinverter D. Communicating data between the Internet and your phone

A. Sending data between the Envoy to Enlighten

You have a given solar module brand and model in mind for use at a given installation site, when choosing microinverters what is an essential specification to review and why? A. Solar panel cell count because the solar panel DC voltage cannot exceed the microinverter max DC input voltage B. Solar panel DC wattage because the solar panel output DC (STC) watts cannot exceed the microinverter AC wattage (VA) output C. AC amps because this changes at 240 VAC or 208 VAC D. All of the above

A. Solar panel cell count because the solar panel DC voltage cannot exceed the microinverter max DC input voltage

When installing the microinverters on the rail, which way should the bracket be facing? A. The bracket should be facing the sky B. The bracket should be facing the roof

A. The bracket should be facing the sky

How is creating the installation sticker map different with an AC module system vs. a stand-alone rail mounted inverter? A. The installation map should be completed as the rows of modules get installed B. The installation map can be completed once all of the modules are installed on the rail C. There is no difference

A. The installation map should be completed as the rows of modules get installed

What does the filled in green circle represent in the app? A. The step is complete B. The step is incomplete

A. The step is complete

The "ABC's" of Fall Protection stands for_________

Anchor, Body Harness, Connector

Enphase Q Raw cable has what size conductors in it? A. #14 AWG B. #12 AWG C. #10 AWG D. #8 AWG

B. #12 AWG

How many consumption CTs are required for consumption monitoring? A. 3 B. 2 C. 1

B. 2

What is the maximum 2 pole breaker size allowed for each Q Cable (12AWG) PV AC branch circuit? A. No maximum it depends on microinverter count B. 20 AMP C. 80 AMP D. 15 AMP

B. 20 AMP

How many points of contact must you keep on a ladder to be considered safe? A. 1 B. 3 C. 2

B. 3

What factor(s) primarily impact the maximum quantity of microinverters per AC branch circuit? A. Light intensity and temperature averages at the installation site B. Conductor size (12 AWG) enclosed in the Q cable C. Microinverter DC input from solar panels D. Microinverter AC voltage and grid frequency

B. Conductor size (12 AWG) enclosed in the Q cable

Which of the CTs is a split core? A. Production CT B. Consumption CT

B. Consumption CT

Where do you go to find data on a system you have built? A. personal email B. Enlighten C. Enphase.com D. You have to go back to the site

B. Enlighten

The Enphase Q cable plugs into_______. A. Installer Toolkit B. Enphase microinverters C. IQ Envoy D. Enlighten

B. Enphase microinverters

What device collects data from the array and uploads that data to the web? A. Microinverters B. Envoy C. Enlighten D. Installer Toolkit

B. Envoy

Name the 2 communications protocols that Enphase products use. A. File transfer protocol B. Internet protocol C. Powerline communications protocol D. Transmission control protocol

B. Internet protocol C. Powerline communications protocol

If using Wi-Fi from an Envoy for internet connection, what must NOT be used to mount the Envoy into? A. Any type of enclosure B. Metal enclosure C. Plastic enclosure

B. Metal enclosure

Using the graphic, which items are connected to each other? Select one or more. A. Mobile device to Enlighten B. Mobile device to Envoy C. Enlighten to MyEnlighten D. Envoy to Enlighten

B. Mobile device to Envoy D. Envoy to Enlighten

If one microinverter in a solar PV system fails, what will occur? A. The system will continue to operate normally B. The one solar panel connected to that microinverter will be out of operation C. The entire solar PV system will be out of operation

B. The one solar panel connected to that microinverter will be out of operation

When wiring an Enphase PV system, voltage and current readings must be from _____________. A. Only L2 phase B. The same phase C. Different phases

B. The same phase

What does the green cloud represent in the app? A. The system is not synced with Enlighten B. The system is synced with Enlighten C. The system is connected to Enlighten

B. The system is synced with Enlighten

Choose the correct image that outlines the systems filter button. A. flag symbol B. Wifi looking symbol

B. Wifi looking symbol

In a residential PV system, _____ production CT(s) are required to measure PV generation? A. 2 B. 3 C. 1

C. 1

What is the maximum circuit breaker current size allowed for each PV AC branch circuit using multiphase phase Q relay and 3phase Q wiring in a multiphase installation? A. 20 AMP B. 32 AMP C. 25 AMP

C. 25 AMP

IQ 7+ Inverters are compatible with modules with what cell counts? Select two answers. A. 66 B. 96 C. 60 D. 72

C. 60 D. 72

It is a best practice to create the __________ prior to the day of installation. A. Drawing of the as built circuits B. Microinverter Installation map C. Activation

C. Activation

How often should you check your fall protection equipment? A. Once a week B. Never C. Before each use

C. Before each use

_______ are marked with arrows to indicate the expected flow of current. A. Envoy power terminals B. Envoy terminal blocks C. CTs D. Bus bars

C. CTs

Which government agency recommends the use of microinverters for solar PV installation in hurricane-prone areas? A. DHS-Department of Homeland Security B. CIA-Central Intelligence Agency C. FEMA- Federal Emergency Management Agency D. DOD-Department of Defense

C. FEMA- Federal Emergency Management Agency

Voltage rise in microinverter systems is measured from which start to end point? A. Across the house B. From Point of Common Coupling to the last microinverter C. From Point of Common Coupling to the solar AC Isolator

C. From Point of Common Coupling to the solar AC Isolator

If needing to jump across a gap (i.e., skylight) between two arrays, what simple method can be used within Q wiring? A. Use a Q Terminator Cap B. Use two circuits C. Install Q Sealing Cap on a spare connector on the Q cable to span the gap between rows

C. Install Q Sealing Cap on a spare connector on the Q cable to span the gap between rows

When using a production CT, what PV branch circuit conductors are used to measure PV generation? A. L1 and L2 B. L2 C. L1

C. L1

What must be considered so microinverters don't hit rails when mounting AC modules? A. Concealed vs exposed end clamps and mid clamps B. Placement of the serial number stickers C. Module clamping areas and manufacturer allowable range D. Module spacing

C. Module clamping areas and manufacturer allowable range

Do solar panels deliver a constant STC rated output when installed at most homes or businesses? A. No, but it is required that solar panels never exceed the inverter rating B. No, solar panels have a maximum output rating and do not exceed that C. No, solar panels typically are warmer and have less light reaching them than in the STC factory test conditions D. Yes, if they didn't the customers would return them or get payment as part of their 20 year warranties

C. No, solar panels typically are warmer and have less light reaching them than in the STC factory test conditions

For ________ reasons, each user must have their own Enlighten account. A. efficiency B. safety C. security

C. security

Which cord grip is recommended for the Q cable entering a junction box? A. ½" UHF cable gland B. ½" VHS cable gland C. ½" UF cable gland D. ½" UV cable gland

C. ½" UF cable gland

Enphase Q cable has 2 conductors in it. What size are those conductors? A. #10 AWG B. #14 AWG C. #8 AWG D. #12 AWG

D. #12 AWG

A designer observes that a system design exceeds 2% Vrise (voltage rise).What design strategies can be used to reduce Vrise? A. Use larger gauge AC wiring B. Reduce the number of microinverters per each AC branch circuit C. Move the envoy D. A and B

D. A and B

The _____________ is used to connect the customer's site to Enlighten? A. GPS route B. Google maps picture C. Installation map D. Activation

D. Activation

Which of these best practices should be created prior to the day of installation? A. Installation map B. GPS route C. Drawing of the home D. Activation

D. Activation

Enphase's disconnecting tool allows you to_____________ A. Disconnect the Q Cable from the microinverter B. Disconnect a module's MC4 connections from the microinverter C. Pull the microinverter away from the mounting bracket on an AC module D. All of the above

D. All of the above

Select the methods you can use to assign microinverter serial numbers to the virtual array? A. Assign from a list of previously scanned microinverters B. Manually type in the serial number C. Scan the serial number from the array map using the camera scanner D. All of the above

D. All of the above

The IQ Combiner 3 and 3C: A. Is rated for up to 80 amps of PV and storage B. Has a maximum capacity of 4 breakers C. Is rated for revenue grade metering D. All of the above

D. All of the above

The IQ Envoy is able to communicate with: A. Enphase Storage B. Enphase IQ Microinverters C. Enlighten D. All of the above

D. All of the above

What are the benefits of installing a dedicated solar sub-board? A. Minimize AC wiring length from the solar circuits B. Reduce installation time C. Maximize installation space for associate components D. All of the above

D. All of the above

When is the installation of CTs required? A. When required for revenue grade metering B. When you install Enphase storage products C. When utilities require it for power export limiting D. All of the above

D. All of the above

What must you take in into consideration so that the inverter doesn't hit the rail when mounting the module? A. Placement of the serial number stickers B. Module spacing C. End clamps and mid clamps D. Clamping range

D. Clamping range

What is the PLC (powerline communications) used for? A. Communicating data between the Internet and your phone B. Sending data from Enlighten to your microinverter C. Sending data from the Envoy to Enlighten D. Communicating between the Envoy and microinverters

D. Communicating between the Envoy and microinverters

What do the letters AP mean when referring to AP mode? A. access priority B. access pass C. all purpose D. access point

D. access point

As compared to the IQ Combiner 3 the IQ Combiner 3C______. A. includes space for eight field installable breakers totaling 160amps, a built in envoy, and a production CT B. is designed for commercial sites C. includes identical hardware but is enclosed in a ruggedized outdoor enclosure D. also includes space for four field installable breakers totaling 80amps, a built in envoy, a production CT and adds a cellular data modem

D. also includes space for four field installable breakers totaling 80amps, a built in envoy, a production CT and adds a cellular data modem

Which of the following are features of Enphase Enlighten monitoring? A. Monitor energy production of the solar PV system B. View historical performance data C. View a virtual solar array D. View battery storage system information if installed E. All of the above

E. All of the above

What are the 3 core components of an Enphase PV system?

Enlighten, Envoy, Microinverter

True or false: An Enlighten user account is not required to access the Installer Toolkit?

False

True or false: Creating the virtual array can only be done in the Installer Toolkit?

False

True or false: Enphase Q Cable works with other manufacturers' equipment.

False

True or false: If the consumption CT's have current from both solar and loads passing through the CT's you will select the "load only" option.

False

True or false: If the main service conductors are not accessible, you will not be able to use consumption CTs.

False

True or false: Pulling the cable tight against the strain relief of the AC connector is the proper way to manage Q Cable.

False

True or false: Q Cable must be installed exactly as removed from its packaging, it cannot be extended, center tapped, spliced to reach a row above with field wire able connectors or used with sealing caps to skip connectors.

False

True or false: Setting the tariff rate schedule is a required step during the commissioning process?

False

True or false: The Installer Toolkit is optional for system verification and commissioning.

False

True or false: In a solar array with Enphase microinverters, all of the solar panels should have the same orientation for maximum energy production.

False The energy production of each micro/panel is independent from the others

True or false: A terminator cap is required on all exposed, cut Q cable ends.

True

True or false: CTs have a polarity which is determined by the direction of the secondary winding.

True

True or false: Eaton BR 2-pole breakers are the only breakers approved for use in the IQ Combiner box.

True

True or false: Enphase Q Raw cable allows you to make jumpers between two arrays.

True

True or false: Enphase microinverters convert DC electricity to AC electricity.

True

True or false: Enphase microinverters do not need an EGC.

True

True or false: Enphase's best practice is to create the site activation prior to the day of installation.

True

True or false: Fall protection can save your life.

True

True or false: If the CTs are installed IN A LOCATION such that ONLY CURRENT SUPPLYING THE LOADS IS PASSING THROUGH select the "load only" option.

True

True or false: Solar panels make DC energy

True

True or false: Terminator caps make cut Q Cable ends safe and waterproof.

True

True or false: The IQ envoy is both a monitoring and a control device.

True

True or false: The Installer Toolkit supports only mobile devices which use either an Android OS or Apple iOS?

True

True or false: The combiner 3 has a built in Envoy.

True

True or false: The statement below describes how the CT functions. AC current passes through a conductor routed though the CT. This produces an alternating magnetic field in the core which induces an alternating current in the secondary windings. The secondary wires are the blue and white wires connected to the Envoy. The reduced or low voltage signal generated by current passing thru the CT is how the Envoy measures AC current.

True

True or false: The statement below describes how the CT functions: AC current passes through a conductor routed though the CT. This produces a magnetic field which induces a current in the CT secondary windings. This current is measured by the Envoy to calculate production and consumption values.

True

True or false: To prepare an AC Module for installation, the microinverter must be pulled out from the mounting bracket and snapped into the installation ready position.

True

True or false: Voltage rise can be reduced by using larger wire sizes, reducing the microinverter quantity or by center feeding AC branch circuits.

True

What are the approved locations where conduit can enter into the IQ Combiner box? Select one or more. A. Top of the box B. Lower back of the box C. Lower left or right side of the box D. Upper left or right side of the box E. All of the above

UNSURE - These two are right, but there is a third option B. Lower back of the box C. Lower left or right side of the box

When designing solar systems, selecting the right microinverter and solar panel pairing based on power output requires analysis. Which of the following statements is the most accurate? A. Because microinverters are a series DC string circuit, the correct minimum and maximum number must be carefully observed B. To claim STCs the output of each microinverter can be no less than 75% of the output of the solar panel that it is connected to C. Selecting solar modules with power output lower than the inverter output is a good idea because all solar panel output will always get captured D. You cannot have the solar panel DC wattage exceed the microinverter output wattage as the microinverter could get damaged

UNSURE, but it's either B. To claim STCs the output of each microinverter can be no less than 75% of the output of the solar panel that it is connected to OR C. Selecting solar modules with power output lower than the inverter output is a good idea because all solar panel output will always get captured (I tried A and D and both were wrong, but I have no more attempts - so let me know which one it is so I can update this)