AUC 351 Solar Panels Flashcards
Can PV Systems produce electricity on cloudy days
Yes but not as much as on sunny
Not at night though
What is the greatest hazard with solar photovoltaic systems
Direct Current (DC) shock
Stand mounted roof installation
Known as universal mounting
Affixed directly to roof joists
Flush mounted roof installations.
Serval inches off roof
Usually on peaked roofs
Integrated design
Serve as structural elements
Reduces concentrations of added weight and avoids penetrations required for mountings and wiring
It reduces vulnerability of equipment to wind
Firefighters if necessary may cut wiring after power confirmed off
No never
Shutting power
Shutting power at main Electrical panel does not ensure power to the building has Been removed
Holds true for PV disconnect
Use of roof top disconnects should not be relied upon
Shut off at inverter to ensure power does not entry the building from PV array , battery
backup or back up generator
Inverters have capacitors that store energy ( will discharge shortly after power to inverter is cut)
What is the prime focus for ladder company operations with solar array
Opening/ removal of sky lights and scuttles as well as horizontal ventilation
Firefighters discovering PV arrays on roof of building should Notify whom
Company officer and IC for subsequent relay to all operating units
If array involved in fire or will negatively effect ops notify IC
IC should delay overhauling until when
Confirmation of power off
Who can decide to use water on PV system
Only IC
If using water on energized PV components it is recommended to use
Fog stream at 30 degrees from distance
Straight stream or foam should not be used
Flush mounted arrays may be subject to what loads
Uplift and down-force wind loads
Incipient fires may be extinguished with
Class C DRY CHEMICAL
