Lighting System Commissioning & Quality Assurance Flashcards
7 cards from real CLC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Lighting System Commissioning & Quality Assurance flashcards as text
What is the correct method for measuring illuminance during commissioning according to IES standards?
Answer: Take measurements on a defined grid pattern at the specified work plane height
IES standards require measurements taken on a grid pattern at the work plane height to accurately calculate average illuminance across the entire space.
What does functional testing of a daylight harvesting control system primarily verify?
Answer: That the photosensor correctly adjusts electric light levels as daylight levels change
Functional testing confirms the photosensor correctly dims or switches off electric lighting in response to changing daylight, maintaining the target illuminance level.
What is the purpose of 'burn-in' testing for new LED luminaire installations?
Answer: To allow initial operating hours that reveal early component failures before owner acceptance
Burn-in testing operates luminaires for an initial period to identify early-life (infant mortality) failures before the system is accepted by the owner.
During LED dimmer commissioning, which performance parameter is most critical to verify?
Answer: Smooth dimming without flicker, strobing, drop-out, or audible noise across the full range
LED dimmers must be verified for smooth operation across the full dimming range, since incompatible dimmer-driver combinations commonly cause flicker, noise, or drop-out.
What is the primary purpose of a lighting control narrative document?
Answer: To describe in plain language how the lighting control system should operate in each scenario
A control narrative provides a plain-language description of how the system responds in each mode or scenario, which guides commissioning verification and owner training.
Which ASHRAE document is most directly relevant to the commissioning process for building systems including lighting?
Answer: ASHRAE Guideline 0
ASHRAE Guideline 0 establishes the commissioning process methodology for new and existing buildings, covering all building systems including lighting.
What is typically included in a lighting commissioning pre-functional checklist?
Answer: Verification that equipment is correctly installed, labeled, and accessible before functional testing begins
Pre-functional checklists verify installation completeness and correctness before proceeding to functional testing, catching basic installation errors early in the process.