ENPHASE STORAGE DESIGN
CERTIFICATION TRAINING EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
True or false: Note 1 indicates that this is a single production
CT for two branch circuits and includes L1 conductors only
but if we had four branch circuits instead of just two, we
would need to add one more CT for the L2 conductors of the
two additional branch circuits. - ANSWERS-False
Encharge 10 has three DC switches, one on each Encharge 3
base unit and they are accessible without having to use
tools. Why does the jurisdiction require a separate DC
Switches between Encharge and Enpower?
A. The distance between Encharge and Enpower on straight
line is 10 feet and there is a solid obstruction between them
,B. There is no Encharge breaker on Enpower
C. Encharge breaker in Enpower is undersized
D. Encharge 10 does not have a single disconnect to shut
down all three Encharge 3 base units at the same time -
ANSWERS-A. The distance between Encharge and Enpower
on straight line is 10 feet and there is a solid obstruction
between them
Why does Enpower need a Neutral Forming Transformer to
operate during the grid outage?
A. Because NEC 2017 requires a transformer to have
reference to Neutral
B. Because Encharge batteries operate 240 VAC line to line
and split phase power systems require a neutral
C. Because when the grid is down the micro inverters
operate on 120 VA - ANSWERS-B. Because Encharge
batteries operate 240 VAC line to line and split phase power
systems require a neutral
, The above system was initially estimated to require three
Encharge 3 equivalent to one Encharge 10 and no soft
starter. After the site survey, they found that the largest
single load in the backup load center, is going to be a 3 kVA
electric motor with a start current of 32 Amps at 240 VAC
for 3 seconds.
Is the estimated size of one Encharge 10 going to be enough
to comply with NEC 2017 710.15 (A) without using a soft
starter?
A. Yes, one Encharge 10 will comply
B. One Encharge 10 is ok because NEC 2017 710.5(A) only
applies to whole home backup
C. No, it requires a minimum of 4 Encharge 3 to comply -
ANSWERS-C. No, it requires a minimum of 4 Encharge 3 to
comply
For partial home backup the guidelines in the Ensemble
planning guide recommend the size of the energy storage
system to be the largest of:
CERTIFICATION TRAINING EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
True or false: Note 1 indicates that this is a single production
CT for two branch circuits and includes L1 conductors only
but if we had four branch circuits instead of just two, we
would need to add one more CT for the L2 conductors of the
two additional branch circuits. - ANSWERS-False
Encharge 10 has three DC switches, one on each Encharge 3
base unit and they are accessible without having to use
tools. Why does the jurisdiction require a separate DC
Switches between Encharge and Enpower?
A. The distance between Encharge and Enpower on straight
line is 10 feet and there is a solid obstruction between them
,B. There is no Encharge breaker on Enpower
C. Encharge breaker in Enpower is undersized
D. Encharge 10 does not have a single disconnect to shut
down all three Encharge 3 base units at the same time -
ANSWERS-A. The distance between Encharge and Enpower
on straight line is 10 feet and there is a solid obstruction
between them
Why does Enpower need a Neutral Forming Transformer to
operate during the grid outage?
A. Because NEC 2017 requires a transformer to have
reference to Neutral
B. Because Encharge batteries operate 240 VAC line to line
and split phase power systems require a neutral
C. Because when the grid is down the micro inverters
operate on 120 VA - ANSWERS-B. Because Encharge
batteries operate 240 VAC line to line and split phase power
systems require a neutral
, The above system was initially estimated to require three
Encharge 3 equivalent to one Encharge 10 and no soft
starter. After the site survey, they found that the largest
single load in the backup load center, is going to be a 3 kVA
electric motor with a start current of 32 Amps at 240 VAC
for 3 seconds.
Is the estimated size of one Encharge 10 going to be enough
to comply with NEC 2017 710.15 (A) without using a soft
starter?
A. Yes, one Encharge 10 will comply
B. One Encharge 10 is ok because NEC 2017 710.5(A) only
applies to whole home backup
C. No, it requires a minimum of 4 Encharge 3 to comply -
ANSWERS-C. No, it requires a minimum of 4 Encharge 3 to
comply
For partial home backup the guidelines in the Ensemble
planning guide recommend the size of the energy storage
system to be the largest of:
