CLD Energy Codes 2

Question 1

Under ASHRAE 90.1, which calculation method allows a designer to redistribute lighting power among spaces as long as the building total does not exceed the allowed wattage?

Accepted Answer

Building area method

Answer

The building area method sets a single LPD for the entire building type, allowing power redistribution among spaces as long as the aggregate total stays within the limit.

Question 2

ASHRAE 90.1 requires automatic shutoff controls for interior lighting in spaces larger than what square footage threshold?

Accepted Answer

2,500 sq ft

Answer

ASHRAE 90.1 mandates automatic shutoff controls in interior spaces larger than 2,500 square feet.

Question 3

Which ASHRAE 90.1 provision allows an additional lighting power allowance for retail display lighting beyond the base LPD?

Accepted Answer

Additional interior lighting power allowance

Answer

ASHRAE 90.1's additional interior lighting power allowances grant extra wattage for specific functions such as retail merchandise display.

Question 4

In California Title 24, what is the term for the mandatory control that dims or turns off lighting when adequate daylight is detected?

Accepted Answer

Daylight control

Answer

Title 24 calls for daylight controls (photosensors with dimming or switching) in daylit zones to reduce energy use when sunlight is sufficient.

Question 5

Under ASHRAE 90.1's space-by-space method, which space type typically has the highest allowed LPD?

Accepted Answer

Sales area

Answer

Retail sales areas are assigned among the highest LPD values in ASHRAE 90.1 because of their high-intensity merchandise display needs.

(CLD) Certified Lighting Designer Practice Test

(CLD) Certified Lighting Designer Practice Test

CLD Energy Codes 2