Wash. Admin. Code § 51-11C-40623 - Section C406.2.3-Lighting measures
C406.2.3
Reduced lighting power.
Interior lighting within the whole project shall achieve credits by complying
with Section C406.2.3.1 or C406.2.3.2. In Group R-1 and Group R-2 occupancies,
dwelling and sleeping units shall comply with Section C406.2.3.3 and all other
areas shall comply with section C406.2.3.1 or C406.2.3.2. Credits apply to the
whole Group R-1 or Group R-2 area.
C406.2.3.1
Reduced lighting power option 1. The total connected interior
lighting power calculated in accordance with Section C405.4.1 shall be 90
percent or less of the lighting power values specified in Table C405.4.2(1)
times the floor area for the building types, or 90 percent or less of the total
interior lighting power allowance calculated in accordance with Section
C405.4.2.
C406.2.3.2
Reduced
lighting power option 2. The total connected interior lighting power
calculated in accordance with Section C405.4.1 shall be 80 percent or less of
the lighting power values specified in Table C405.4.2(1) times the floor area
of the building types, or 80 percent or less of the total interior lighting
power allowance calculated in accordance with Section C405.4.2.
C406.2.3.3
Lamp efficacy. No
less than 95 percent of the permanently installed light fixtures in dwelling
units and sleeping units shall be provided by lamps with a minimum efficacy of
90 lumens per watt.
C406.2.4
Lighting controls. For
buildings with nontransient dwelling units and
sleeping units, energy credits shall be achieved by
installation of systems that comply with the requirements of Section
C406.2.4.1. All other buildings shall achieve energy credits by complying with
Section C406.2.4.2. For buildings with mixed occupancies, credits shall be
prorated based on floor area.
C406.2.4.1
Residential building lighting control. In buildings with
nontransient dwelling units and sleeping units, lighting controls shall be
configured to meet the following:
1. Each
dwelling unit or sleeping unit shall have a
main control by the main entrance that turns off all the lights and switched
receptacles in the unit. The main control shall be permitted to have two
controls, one for permanently wired lighting and one for switched receptacles.
The main controls shall be clearly identified as "lights master off" and
"switched outlets master off."
2.
Switched receptacles shall be clearly identified and all switched receptacles
shall be located within 12 inches of an unswitched receptacle. Each room shall
have a minimum of two switched receptacles except bathrooms, kitchens, and
closets.
C406.2.4.2
Enhanced digital lighting controls. Measure credits shall be
achieved where no less than 50 percent of the gross floor area within the
project has luminaires and lighting controls that include high end trim in
compliance with Section C405.2.8.3 and either lumin-aire-level lighting
controls in compliance with Section C405.2.8.1 or networked lighting
controls in accordance with Section C405.2.8.2. Where general
lighting in more than 50 percent of the gross floor area complies, the
base credits from Table C406.2(1) shall be prorated as follows:
[Floor area with high end trim, %] x [Base energy credits for C406.2.4.2] / 50%
Notes
Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040.
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