Enphase Storage design certification training
exam questions with correct answers
Which component of the Ensemble system detects a grid failure?
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A. Envoy
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B. Enpower
|
C. Encharge - CORRECT ANSWER✔✔-B. Enpower
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True or false: PV systems with Energy storage but without backup power do not
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require Enpower. - CORRECT ANSWER✔✔-True
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Where do the hot conductors between Encharge and Enpower terminate?
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A. In the IQ Combiner box
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B. At the DER (distributed energy resource) input terminals
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C. On the Encharge circuit breaker terminals
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,D. On the PV circuit breaker terminals
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Clear my choice - CORRECT ANSWER✔✔-B. At the DER (distributed energy
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resource) input terminals | |
What is the maximum amount of PV and storage that can be connected to the
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Enpower smart switch? | |
A. 80A of PV and 80A of storage for a total of 160A
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B. 80A of PV or 80A of storage for a total of 80A
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C. 40A of PV and 40A of storage for a total of 80A
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D. 0A, PV and Storage is landed in a backup loads panel - CORRECT ANSWER✔✔-
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A. 80A of PV and 80A of storage for a total of 160A
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Do we need to install an additional service disconnect if the Enpower main
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service breaker has been installed as the main service disconnect?
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A. No, it is not necessary to install an additional disconnect
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B. It depends on the use case
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, C. Yes, it has to be redundant and serve as a rapid shutdown initiation device -
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CORRECT ANSWER✔✔-A. No, it is not necessary to install an additional
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disconnect
Why does Enpower need a Neutral Forming Transformer to operate during the
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grid outage?|
A. Because NEC 2017 requires a transformer to have reference to Neutral
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B. Because Encharge batteries operate 240 VAC line to line and split phase power
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systems require a neutral | | |
C. Because when the grid is down the micro inverters operate on 120 VA -
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CORRECT ANSWER✔✔-B. Because Encharge batteries operate 240 VAC line to line
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and split phase power systems require a neutral
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The above system was initially estimated to require three Encharge 3 equivalent
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to one Encharge 10 and no soft starter. After the site survey, they found that the
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largest single load in the backup load center, is going to be a 3 kVA electric motor
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with a start current of 32 Amps at 240 VAC for 3 seconds.
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Is the estimated size of one Encharge 10 going to be enough to comply with NEC
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2017 710.15 (A) without using a soft starter?
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A. Yes, one Encharge 10 will comply
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exam questions with correct answers
Which component of the Ensemble system detects a grid failure?
| | | | | | | | |
A. Envoy
|
B. Enpower
|
C. Encharge - CORRECT ANSWER✔✔-B. Enpower
| | | | |
True or false: PV systems with Energy storage but without backup power do not
| | | | | | | | | | | | | |
require Enpower. - CORRECT ANSWER✔✔-True
| | | |
Where do the hot conductors between Encharge and Enpower terminate?
| | | | | | | | |
A. In the IQ Combiner box
| | | | |
B. At the DER (distributed energy resource) input terminals
| | | | | | | |
C. On the Encharge circuit breaker terminals
| | | | | |
,D. On the PV circuit breaker terminals
| | | | | |
Clear my choice - CORRECT ANSWER✔✔-B. At the DER (distributed energy
| | | | | | | | | | |
resource) input terminals | |
What is the maximum amount of PV and storage that can be connected to the
| | | | | | | | | | | | | | |
Enpower smart switch? | |
A. 80A of PV and 80A of storage for a total of 160A
| | | | | | | | | | | |
B. 80A of PV or 80A of storage for a total of 80A
| | | | | | | | | | | |
C. 40A of PV and 40A of storage for a total of 80A
| | | | | | | | | | | |
D. 0A, PV and Storage is landed in a backup loads panel - CORRECT ANSWER✔✔-
| | | | | | | | | | | | | |
A. 80A of PV and 80A of storage for a total of 160A
| | | | | | | | | | | |
Do we need to install an additional service disconnect if the Enpower main
| | | | | | | | | | | | |
service breaker has been installed as the main service disconnect?
| | | | | | | | |
A. No, it is not necessary to install an additional disconnect
| | | | | | | | | |
B. It depends on the use case
| | | | | |
, C. Yes, it has to be redundant and serve as a rapid shutdown initiation device -
| | | | | | | | | | | | | | | |
CORRECT ANSWER✔✔-A. No, it is not necessary to install an additional
| | | | | | | | | | |
disconnect
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 -
| | | | | | | | | | | | | | |
CORRECT ANSWER✔✔-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
| | | | | |
