ENPHASE STORAGE DESIGN CERTIFICATION TRAINING
2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔In the above system the largest single load requires two Encharge 3, the Load
Analysis of Power, Energy, apparent power, and autonomy 5.2 Encharge 3. PV size
does not exceed 150% of the battery size.
Is the above system correctly sized according to the recommendations of the Ensemble
planning guidelines?
A. No, it is over-sized by one Encharge 2
B. Yes, it is correctly sized per manufacturer's guidelines
C. No, it is downsized by two Encharge 3 - ✔✔B. Yes, it is correctly sized per
manufacturer's guidelines
✔✔True or false: The rapid shutdown switch for Enpower R2 is required only if there is
load shedding or generator. - ✔✔False
✔✔When the grid is present during sun-hours, this system is supplying power to the
main service panel. What type of loads will it serve during a grid outage?
A. It will not feed any loads as it will not operate during the grid outage
B. It depends on the time of the day and the irradiance
C. Refrigerator and lights
D. Only lights because it has only three branch circuits - ✔✔A. It will not feed any loads
as it will not operate during the grid outage
✔✔When will the IQ8 microinverters supply power to the protected loads panel if the
grid is down?
A. During the day if the generator stops.
B. IQ8 microinverters are grid forming so they will operate day and night with or without
generator.
C. Only during sun-hours and enough solar irradiance for the microinverter to operate.
D. During sun-hours if the generator is running to provide the voltage reference. - ✔✔C.
Only during sun-hours and enough solar irradiance for the microinverter to operate.
, ✔✔True or false: This system will supply power during grid outages during sun-hours or
at night because the PV array power is larger than 3.5 times the largest single load
power. - ✔✔False
✔✔Which Enpower breakers must be ordered separately, be specified in the single line
diagram and be listed in the bill of materials?
A. All except 6
B. 1 and 2
C. All but 4 and 5 because they are identical and preinstalled
D. 4 and 5 - ✔✔A. All except 6
✔✔What electrical safety reason is involved in the requirement that Encharge and
Generator breakers must have a hold down kit to comply with NEC 2017 710.15(E)?
A. Both breakers are two-pole 240 Volts and a secondary power source
B. ESS and Generators are considered high voltage
C. When the grid is down, the Encharge breaker will be energized, and the Generator
breaker can also be energized if Enpower starts the generator to supplement energy
demand. The hold down kit prevents exposure to electric shock and arc flash if a person
accidentally attempts to remove the breakers during a grid outage - ✔✔C. When the
grid is down, the Encharge breaker will be energized, and the Generator breaker can
also be energized if Enpower starts the generator to supplement energy demand. The
hold down kit prevents exposure to electric shock and arc flash if a person accidentally
attempts to remove the breakers during a grid outage
✔✔Which Enpower breaker can be used as PV rapid shutdown initiation device?
A. PV AC combiner breaker
B. Only an external breaker can be a rapid shutdown initiation device
C. Encharge breaker - ✔✔A. PV AC combiner breaker
✔✔Main and load CSR breakers have identical specifications with ratings ranging
between 100 Amps and 200 Amps. What does the designer must do if the required
rating for the load breaker is below 100 Amps?
A. Does not specify any load breaker in the single line diagram and on the bill of
materials
2025/2026 QUESTIONS WITH ANSWERS GRADED A+
✔✔In the above system the largest single load requires two Encharge 3, the Load
Analysis of Power, Energy, apparent power, and autonomy 5.2 Encharge 3. PV size
does not exceed 150% of the battery size.
Is the above system correctly sized according to the recommendations of the Ensemble
planning guidelines?
A. No, it is over-sized by one Encharge 2
B. Yes, it is correctly sized per manufacturer's guidelines
C. No, it is downsized by two Encharge 3 - ✔✔B. Yes, it is correctly sized per
manufacturer's guidelines
✔✔True or false: The rapid shutdown switch for Enpower R2 is required only if there is
load shedding or generator. - ✔✔False
✔✔When the grid is present during sun-hours, this system is supplying power to the
main service panel. What type of loads will it serve during a grid outage?
A. It will not feed any loads as it will not operate during the grid outage
B. It depends on the time of the day and the irradiance
C. Refrigerator and lights
D. Only lights because it has only three branch circuits - ✔✔A. It will not feed any loads
as it will not operate during the grid outage
✔✔When will the IQ8 microinverters supply power to the protected loads panel if the
grid is down?
A. During the day if the generator stops.
B. IQ8 microinverters are grid forming so they will operate day and night with or without
generator.
C. Only during sun-hours and enough solar irradiance for the microinverter to operate.
D. During sun-hours if the generator is running to provide the voltage reference. - ✔✔C.
Only during sun-hours and enough solar irradiance for the microinverter to operate.
, ✔✔True or false: This system will supply power during grid outages during sun-hours or
at night because the PV array power is larger than 3.5 times the largest single load
power. - ✔✔False
✔✔Which Enpower breakers must be ordered separately, be specified in the single line
diagram and be listed in the bill of materials?
A. All except 6
B. 1 and 2
C. All but 4 and 5 because they are identical and preinstalled
D. 4 and 5 - ✔✔A. All except 6
✔✔What electrical safety reason is involved in the requirement that Encharge and
Generator breakers must have a hold down kit to comply with NEC 2017 710.15(E)?
A. Both breakers are two-pole 240 Volts and a secondary power source
B. ESS and Generators are considered high voltage
C. When the grid is down, the Encharge breaker will be energized, and the Generator
breaker can also be energized if Enpower starts the generator to supplement energy
demand. The hold down kit prevents exposure to electric shock and arc flash if a person
accidentally attempts to remove the breakers during a grid outage - ✔✔C. When the
grid is down, the Encharge breaker will be energized, and the Generator breaker can
also be energized if Enpower starts the generator to supplement energy demand. The
hold down kit prevents exposure to electric shock and arc flash if a person accidentally
attempts to remove the breakers during a grid outage
✔✔Which Enpower breaker can be used as PV rapid shutdown initiation device?
A. PV AC combiner breaker
B. Only an external breaker can be a rapid shutdown initiation device
C. Encharge breaker - ✔✔A. PV AC combiner breaker
✔✔Main and load CSR breakers have identical specifications with ratings ranging
between 100 Amps and 200 Amps. What does the designer must do if the required
rating for the load breaker is below 100 Amps?
A. Does not specify any load breaker in the single line diagram and on the bill of
materials
