EG4
How many flexboss21 inverters can you install on a single gridboss?
3
What does AVL stand for?
Approved Vendor List
What makes a bifacial module different than a monofacial?
Bi facial can generate power from the reflection of the roof on the back sheet of the module.
This piece of equipment is responsible for taking DC power and turning it into AC power?
Inverter or microinverter
What limitation do the "off grid" inverters have that the hybrid inverters do not?
Off grid cannot send power to utility
T/F the end user is not responsible for maintenance on their system if they took out a loan to purchase it.
False.
Will a module in AZ in 92 degree weather produce more electricity than one in FL in 72 degree weather? (assume all other elements are the same)
No. More heat = less efficient.
What's the most optimal orientation for solar production?
South
What are the breaker sizes you can put inside the Gridboss?
1 X 125A
1 X 80A
2C 60A
What's the difference between a prepaid PPA and standard PPA?
Prepaid = one time payment upfront
Standard = monthly payments
What is a degradation warranty?
What % of original nameplate rating the module will still generate after a certain period of time.
EX: 87% over 25 years.
What is "clipping"?
When DC power is > AC output
Ex: 12kW PV system on a 9kW inverter
Which flexboss inverter should you recommend if a customer is installing Solar only (no battery) and the system size is 16kW?
Flexboss21
FB18 would experience clipping.
What's the difference in how the monthly payment is calculated on a PPA vs a loan?
PPA = based on monthly kWh production
loan = based on system price
What does STC rating stand for?
Standard test conditions.
Basically what the panel can generate under "perfect" conditions
What's the difference between a DC coupled battery vs an AC coupled battery?
DC: Power generated from PV goes directly into battery. No inversions
AC: Power generated from PV goes to inverter first first (AC), then to battery where AC is inverted back to DC for charging. 2 inversions = less efficient
What is the MPPT DC startup Voltage on the Flexboss21?
200VDC
Is the end user still responsible for monthly payments on a standard PPA if the system stops generating power?
No. PPA monthly payments are based on system kWh production. If there's no kWh production for a month then there's no payment amount.
What does PTC rating stand for?
Performance test rating. More realistic output that you will see in the field.
If a customer is using 2000W of continuous power, how long would it take them to drain a 32kWh battery (assuming 100% DOD)?
16hours
32000W (battery capacity) / 2000W (load)