Pv Solar Arrays Flashcards
When shutting the power at the main electrical panel at a PV array fire , does this ensure power is off to the system?
No this does not ensure power is off
At a PV array fire can we cut any of wires associated with the system?
Never
Where would we find PV array disconnect switches?
The roof. Next to the main electrical panel. Adjacent to the inverter. Nearby the charge controller. In the battery backup area. And outside the bldg.
Can we count on the roof top disconnects when dealing with PV Arrays?
No they are used for maintenance
Shut off power to the inverter to ensure the power does not enter the bldg
At PV arrays do batteries store power both day and night?
Yes regardless of isolation
What is prime focus for ventilation at PV array fires?
Opening skylights and scuttles
As well as horizontal vent
At a top floor fire where there is a PV array on the roof when should overhaul be done?
IC should delay overhaul until there is conformation that the PV system has been shut down
Can we use water at a PV array fire ?
Yes
What type of nozzle and how far away do you need to be from the PV array when your going to operate the line?
Fog nozzle at a 30 degree spray pattern operated from a distance
At a energized PV array fire can we use a straight stream
No and no foam
At a PV array fire can we remove modules from the system to overhaul under them?
No not an option
At a incipient fire at a PV array what type extinguisher can be used?
Dry chemical
At a PV array fire can we open combiner boxes to attempt to shut power to a PV array system?
No
PV arrays will be placed on what side of the roof
South and west
Can the roof be cut at a PV array fire?
Yes as long as it’s away from the PV array
