Healthcare-v4 MRc5: PBT source reduction - mercury
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Specify and install fluorescent lamps with both low mercury content (MR Prerequisite PBT Source Reduction—Mercury) and long lamp life, as listed in Table 1.
Table 1. criteria for rate life of low-mercury lamps
Lamp |
Maximum content |
Lamp Life (hrs) |
|---|---|---|
T-8 fluorescent, eight-foot |
10 mg mercury |
standard output - 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) high output - 18,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) |
T-8 fluorescent, four-foot |
3.5 mg mercury |
both standard and high output 30,000 rated hours on instant start ballasts, or 36,000 rated hours on program start ballasts (3 hour starts) |
T-8 fluorescent- two foot and three foot |
3.5 mg mercury |
24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) |
T-8 fluorescent, U-bent |
6 mg mercury |
18,000 rated hours on instant start ballasts, or 24,000 rated hours on program start ballasts (3-hour starts) |
T-5 fluorescent, linear |
2.5 mg mercury |
both standard and high output - 25,000 rated hours on program start ballasts |
Compact fluorescent, nonintegral ballast |
3.5 mg mercury |
12,000 rated hours |
Compact fluorescent, integral ballast |
3.5 mg mercury, ENERGY STAR qualified |
Bare bulb - 10,000 rated hours |
High-pressure sodium, up to 400 watts |
10 mg mercury |
Use noncycling type or replace with LED lamps or induction lamps |
High-pressure sodium, above 400 watts |
32 mg mercury |
Use noncycling type or replace with LED lamps or induction lamps |
Frequently asked questions
Do LED lamps qualify automatically for this credit, regardless of rated lifetime?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
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LEEDuser overview
Frank advice from LEED experts
LEED is changing all the time, and every project is unique. Even seasoned professionals can miss a critical detail and lose a credit or even a prerequisite at the last minute. Our expert advice guides our LEEDuser Premium members and saves you valuable time.
For full access, sign up now for LEEDuser Premium
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Specify and install fluorescent lamps with both low mercury content (MR Prerequisite PBT Source Reduction—Mercury) and long lamp life, as listed in Table 1.
Table 1. criteria for rate life of low-mercury lamps
Lamp |
Maximum content |
Lamp Life (hrs) |
|---|---|---|
T-8 fluorescent, eight-foot |
10 mg mercury |
standard output - 24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) high output - 18,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) |
T-8 fluorescent, four-foot |
3.5 mg mercury |
both standard and high output 30,000 rated hours on instant start ballasts, or 36,000 rated hours on program start ballasts (3 hour starts) |
T-8 fluorescent- two foot and three foot |
3.5 mg mercury |
24,000 rated hours on instant start ballasts or program start ballasts (3-hour starts) |
T-8 fluorescent, U-bent |
6 mg mercury |
18,000 rated hours on instant start ballasts, or 24,000 rated hours on program start ballasts (3-hour starts) |
T-5 fluorescent, linear |
2.5 mg mercury |
both standard and high output - 25,000 rated hours on program start ballasts |
Compact fluorescent, nonintegral ballast |
3.5 mg mercury |
12,000 rated hours |
Compact fluorescent, integral ballast |
3.5 mg mercury, ENERGY STAR qualified |
Bare bulb - 10,000 rated hours |
High-pressure sodium, up to 400 watts |
10 mg mercury |
Use noncycling type or replace with LED lamps or induction lamps |
High-pressure sodium, above 400 watts |
32 mg mercury |
Use noncycling type or replace with LED lamps or induction lamps |
Frequently asked questions
Do LED lamps qualify automatically for this credit, regardless of rated lifetime?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |