Mixed Deck — All CLC Topics Flashcards

In a Lutron RadioRA 2 wireless system, what is the maximum number of devices supported per system?

Answer: 200 devices

Lutron RadioRA 2 supports up to 200 devices per system, making it suitable for mid-sized residential and small commercial applications.

Which life-cycle cost component accounts for lamp and ballast replacements over a fixture's service life?

Answer: Maintenance cost

Maintenance costs include group relamping, spot replacement labor, and component (driver/ballast) replacements over the fixture's lifetime.

Which control approach is specifically required by California's Title 24 energy code for all indoor lighting in newly constructed non-residential buildings?

Answer: Occupancy sensing and daylighting controls

Title 24 mandates occupancy sensors and daylighting controls (photosensors) throughout non-residential new construction to reduce energy use.

How does smart lighting improve user experience?

Answer: Offers automation and personalization

Smart lighting systems offer advanced functionalities beyond basic on/off control, such as scheduling, remote operation via apps, and scene setting. Users can automate lighting based on routines, personalize light color and intensity, and integrate with other smart home devices. This provides enhanced convenience, comfort, and a tailored lighting experience for occupants.

A utility's 'demand charge' penalizes buildings based on which electrical characteristic?

Answer: Peak kilowatt draw during billing period

Demand charges are based on the highest power draw (kW) recorded during any short interval (typically 15 minutes) in the billing period.

Which type of dimming control maintains constant light output over a lamp's life by increasing power as lumens depreciate?

Answer: Lumen maintenance dimming

Lumen maintenance dimming starts fixtures at reduced output and increases drive current over time to compensate for lumen depreciation, saving energy early in lamp life.

Which procurement method involves the owner selecting a contractor based on qualifications and then negotiating the contract price?

Answer: Qualifications-based selection

Qualifications-based selection (QBS) chooses the contractor on merit and experience first, with price negotiated afterward.

Which building orientation strategy maximizes winter solar gain while minimizing summer overheating in a temperate US climate?

Answer: Elongating the building on the east-west axis with large south-facing glazing and horizontal overhangs

Elongating on the east-west axis maximizes south exposure; horizontal overhangs block the high summer sun while admitting the lower winter sun, optimizing solar access.

Which UL standard specifically covers the safety of LED drivers and power supplies used in luminaire applications?

Answer: UL 8750

UL 8750 is the Standard for Safety of Light Emitting Diode (LED) Equipment for Use in Lighting Products, covering LED drivers and control gear.

When implementing daylighting integration practices, what should CLC professionals prioritize?

Answer: Alignment with professional standards, stakeholder needs, and organizational goals

Effective implementation of daylighting integration requires balancing professional standards, stakeholder needs, and organizational objectives for optimal results.

A retail store uses track lighting with 15° beam angle spotlights over a mannequin display 3 meters away. What effect will the narrow beam produce?

Answer: Tight, dramatic highlight concentrated on the mannequin

A 15° beam angle creates a tight, concentrated pool of light that dramatically highlights the mannequin and increases the contrast ratio between display and surround.

A designer is evaluating two luminaires: one with an LER of 85 lm/W and one with 60 lm/W. What does LER stand for and which is more efficient?

Answer: Luminaire Efficacy Rating; the 85 lm/W unit is more efficient

LER (Luminaire Efficacy Rating) measures system lumens per watt for the complete luminaire; higher values indicate greater efficiency.

Under OSHA regulations, emergency lighting must be provided and tested in which scenario involving an industrial facility?

Answer: Wherever the sudden loss of artificial light would expose workers to serious injury hazards

OSHA 29 CFR 1910.303 and related standards require emergency lighting wherever loss of normal illumination would create injury hazards, regardless of facility size.

In a large commercial retail space using automated lighting controls, what is 'demand response' lighting?

Answer: Temporarily reducing lighting power on command from the utility during peak demand periods

Demand response allows the utility or building management system to temporarily reduce lighting power during grid peak demand events, often in exchange for incentive payments.

What is the primary disadvantage of using a high Window-to-Wall Ratio (WWR) without additional shading strategies?

Answer: Increased risk of glare and solar heat gain, raising cooling loads

High WWR increases daylight but also admits more direct sun and solar radiation, significantly raising cooling loads and glare risk without complementary shading measures.

When commissioning a daylight harvesting closed-loop system, where should the photosensor be aimed to measure the correct work-plane illuminance?

Answer: Downward toward the work plane, away from direct view of windows

A closed-loop photosensor must measure the actual illuminance on the work plane, so it faces downward while avoiding direct window glare that would skew readings.

What is a key principle of project budgeting & specification in Certified Lighting Consultant practice?

Answer: Applying structured methodologies based on evidence and best practices

Project Budgeting & Specification in Certified Lighting Consultant practice requires applying structured, evidence-based methodologies while adapting to specific professional contexts.

In a tunable white LED system, two LED channels are typically used. What are they?

Answer: A warm white (2700K) channel and a cool white (5000K–6500K) channel

Tunable white luminaires blend a warm white CCT channel with a cool white CCT channel in variable ratios to achieve any intermediate color temperature.

Which IES recommended practice provides guidance for office lighting design in the United States?

Answer: ANSI/IES RP-1

ANSI/IES RP-1 (Recommended Practice for Office Lighting) provides guidelines for illuminance levels, luminance ratios, and visual comfort in office environments.

Which feature of a smart lighting gateway enables third-party HVAC and access control systems to respond to lighting occupancy data?

Answer: API or BACnet/IP data sharing that broadcasts occupancy status to other building systems

Open APIs and BACnet/IP integration allow the lighting gateway to share real-time occupancy data with HVAC, access control, and other building management systems.