idential
Lighting Standards
Comparison of 2001 to 2005 Standards
Applicable provisions will also apply to interior
lighting in High-rise residential living quarters Hotel/motel guest rooms 4
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
High Efficacy vs Low Efficacy Lighting
It is necessary to differentiate between low efficacy
and high efficacy lighting systems in order to comply
with residential lighting Standards.
AND
It is necessary to
calculate installed
wattages Kitchens
2005 Standards
2001 Standards 5
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Definition of High Efficacy Lighting 15 Watts or less:
minimum 40 lumens
per Watt 15 to 40 Watts:
minimum 50 lumens
per Watt Over 40 Watts:
minimum 60 lumens
per Watt
Not less than 40 lumens
per Watt.
2005 Standards
2001 Standards 6
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Ballast Requirements
Ballasts for lamps rated
13 Watts or greater shall
be electronic and shall
have an output frequency
of no less than 20 kHz.
2005 Standards
2001 Standards 7
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Definition of High Efficacy Lighting
Must not contain medium
based incandescent sockets
[except for outdoor high
intensity discharge lighting
(HID) containing an HID lamp,
and factory-installed hardwired
HID ballast and
HID rated socket,
and meeting
minimum
lumens per Watt].
Must not contain medium
based incandescent sockets.
2005 Standards
2001 Standards
4-pin Quad
Compact
Fluorescent
Medium
Base
Lamp
Medium
Base
HID 8
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine system efficacy
For all pin-based fluorescent systems, only the Watts
of the lamp (not the ballast) need to be considered.
Divide the initial lamp lumens by the lamp Watts.
Virtually all pin-based fluorescent systems will qualify
as HIGH-efficacy for the residential lighting
standards.
Initial Lumens
÷ Watts
= Efficacy
(13-Watt Quad)
900
÷ 13
= 69.2 lpW 9
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine system efficacy
All screw based lighting systems without factory
installed hardwired ballasts are considered LOW-
efficacy.
All low-voltage incandescent lighting is considered
LOW-efficacy lighting (including tungsten halogen,
MR-11 and MR-16). 10
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine system efficacy
All line voltage and low voltage tracks are considered
LOW-efficacy for residential lighting standards,
regardless of the lamp type attached to the track.
It must always be assumed that incandescent lamps
will be used. 11
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine wattage
Luminaires with modular components that allow
conversion between screw-based and pin-based
sockets without changing the luminaire housing or
wiring are considered low efficacy.
It must be assumed that the maximum relamping or
system wattage rated for that platform will be used. 12
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine system efficacy
There are no high intensity discharge (HID) lighting
systems (mercury vapor, high pressure sodium, metal
halide) with medium based sockets that qualify as
high efficacy for interior residential lighting.
To determine efficacy for HID outdoor lighting
fixtures, divide the initial rated lamp lumens by the
system Watts (include lamps plus ballast Watts).
Nearly all mercury vapor systems will be LOW-
efficacy, and most other HID systems will qualify as
HIGH-efficacy. 13
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Switching Requirements
High efficacy lighting system must be operated on
separate switch from any incandescent or other low
efficacy lighting system.
2005 Standards
2001 Standards 14
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Recessed luminaires in insulated ceilings
Must be approved for zero-clearance insulation cover
(IC)
AND
must be certified airtight
2005 Standards
2001 Standards
© Progress Lighting, used by permission 15
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Kitchen Lighting
Definition of a Kitchen
:
Kitchen in a residential
dwelling unit is a room or area
used for cooking, food storage
and preparation and washing
dishes, including associated
counter tops and cabinets,
refrigerator, stove, ovens, and
floor area. Adjacent areas are
considered Kitchen if the
lighting for the adjacent areas
is on the same switch as the
lighting for the Kitchen.
Definition of a Kitchen
:
Kitchen/food preparation is a
room or area with cooking
facilities and/or an area where
food is prepared.
2005 Standards
2001 Standards
© Progress Lighting, used by permission 16
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Kitchen Lighting
Additional
luminaires
used for
decorative
effects need
not meet this
requirement.
At least 50% of
installed wattage must
be high efficacy.
Lighting in areas
adjacent to the
Kitchen (i.e. Nook)
is considered
Kitchen lighting if it is
on the same switch as
the Kitchen lighting.
General
lighting must
be high
efficacy.
2005 Standards
2001
Standards
© Progress Lighting, used by permission 17
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
Kitchen Light Switching
High efficacy lighting
must be switched
separately from low
efficacy lighting.
There are no longer any
constraints on where the
separate switches are
located.
General lighting must be
controlled by a switch on
a readily accessible
lighting control panel at
an entrance to the
Kitchen.
2005 Standards
2001 Standards 18
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
For Kitchens, at least 50% of the installed wattage
must be high efficacy. NO EXCEPTION.
Kitchen is the only room where wattage is a factor in
residential lighting Standards compliance. It must be
established that at least 50% of the installed wattage
is high efficacy.
This means that for every four or five high efficacy
fixtures, one low efficacy Kitchen lighting fixture may
be installed. 19
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
When calculating the energy use of low-efficacy
(screw-based) lighting for residential Kitchens, it
does not matter what lamp wattage or lamp type
is used in a screw-based fixture.
It must always be assumed that an incandescent
lamp of the maximum relamping rated wattage
will be used. 20
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
The label on the fixture showing the maximum
relamping rated wattage must be permanently
installed on the fixture at the factory. Field installed
labels are not allowed. 21
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
Minimum Required:
100 Watts
Example:
4 CF fixtures x 26 Watts
= 104 Watts
(Assuming input wattage on
electronic ballast = 26 Watts.)
1 recessed can with
screw based socket.
Relamping rated wattage
on factory installed label
= 100 Watts.
Low Efficacy System
= 100 Watts.
Required High Efficacy
System
Low Efficacy System 22
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
Minimum Required:
200 Watts
Example:
5 CF fixtures x 26 Watts
= 130 Watts
Plus minimum 70 Watts
high efficacy/electronic
ballasts under cabinet
lighting.
2 recessed cans with
screw based sockets.
Relamping rated wattage
on factory installed label
= 100 Watts.
Low Efficacy System
= 200 Watts.
Required High Efficacy
System
Low Efficacy System 23
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
Standards say:
The wattage of line-voltage lighting track and plug-in
busway which allows the addition or relocation of
luminaires without altering the wiring of the system
shall be the volt-ampere rating of the branch circuit
feeding the luminaires or an integral current limiter
controlling the luminaires, or the higher of the
maximum relamping rated wattage of all of the
luminaires included in the system, listed on a
permanent factory-installed label, as specified by UL
1574, or 45 Watts per linear foot. 24
California Title 24 Residential Lighting Standards
Comparison of 2001 to 2005 Standards
How to determine WATTAGE
Track Lighting
Add the maximum relamping rated wattage of all
installed track heads to determine if more than 45
Watts per linear foot has been used.
If using more than 45 Watts per foot of