The State of Texas is currently under IECC 2015 as the adopted energy code for use in the state for all residential, commercial, and industrial construction that is not single-family residential construction under Rule §19.53(a).
Effective Nov. 1, 2016, SECO adopted the 2015 International Energy Conservation Code (IECC) for commercial, industrial and residential buildings taller than three stories. The code applies to R2, R3 and R4 residential buildings and excludes single and two-family residences of three stories or fewer above grade.
A municipality or county may establish procedures to adopt local amendments to the code. Such amendments may not result in less stringent energy efficiency requirements in non-attainment and affected counties.
Lighting systems shall be provided with controls that comply with one of the following.
1. Lighting controls as specified in Sections C405.2.1 through C405.2.6.
2. Luminaire level lighting controls (LLLC) and lighting controls as specified in Sections C405.2.1, C405.2.4 and C405.2.5.
Lighting controls (Mandatory)
sensor controls in warehouses shall comply with
Section C405.2.1.2. Occupant sensor controls in open
plan office areas shall comply with Section C405.2.1.3.
Occupant sensor controls for all other spaces specified
in Section C405.2.1 shall comply with the following:
1. They shall automatically turn off lights within 20
minutes after all occupants have left the space.
2. They shall be manual on or controlled to automatically
turn on the lighting to not more than 50-percent
Occupant sensor control function.
In warehouses, the lighting in aisleways
and open areas shall be controlled with occupant sen-sors
that automatically reduce lighting power by not
less than 50 percent when the areas are unoccupied.
The occupant sensors shall control lighting in each
aisleway independently and shall not control lighting
beyond the aisleway being controlled by the sensor.
Occupant sensor control function in warehouses
. Each area of the building
that is not provided with occupant sensor controls complying with Section C405.2.1.1 shall be provided with
time-switch controls complying with Section C405.2.2.1.
to have light-reduction controls shall have a manual
control that allows the occupant to reduce the con-nected
lighting load in a reasonably uniform illumina-tion
pattern by not less than 50 percent
. Occupant sensor controls in open
plan office spaces less than 300 square feet (28 m2) in area shall comply with Section C405.2.1.1. Occupant
sensor controls in all other open plan office spaces shall comply with all of the following: