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FAQs about MRc4 :

How do you know if a lamp meets the NEMA guidelines, and can therefore be excluded?

The project building includes a significant amount of process lighting (i.e. sports arena lighting or studio lighting). Do these lamps need to be included?

There are no mercury-containing lamps installed in the project building. Can we upload a signed statement from our property manager instead of completing the credit form and documentation?

A large multi-tenant project does not have a uniform lighting standard, therefore there are a number of different types of lamps are installed on the project. How should we go about documenting this credit?

Do we need to provide a purchasing plan if the lamp inventory of currently installed lamps shows that the average mercury content is already below 90 picograms per lumen-hour?

Do lamps for task lighting need to be included in the purchasing plan?

Do mercury-free lamps need to be included in Table MRc4-1 Lamp Purchasing Plan and Table MRc4-2 Performance Period Lamp Purchasing?

All of the outdoor fixtures in the project building are mercury-free. Can we exclude all outdoor fixtures from the purchasing plan?

The project building is a large multi-tenant building and tenants are responsible for their own lamp purchases. Can lamps in tenant spaces be excluded?

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EBOM-2009 MRc4:Sustainable Purchasing—Reduced Mercury in Lamps

How do I find replacement lights?

Profile picture for user michael.smithing
Michael Smithing
Director - Green Building Advisory
Colliers International Ltd.
LEEDuser Basic Member
201 thumbs up

I've been provided with a light inventory for our building and so know what type of light I'm looking for (e.g. 18W F840). I've also found the Philips, GE and Sylvania LEED-EB calculators. What I can't find is any link between the two. All of them require specific product codes or product names and linking the product I'm looking for the product name is proving very frustrating. Is there any efficient way to identify the optimal replacement products?

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Wed, 03/07/2012 - 19:30

Michael, Good question...I don't think the manufacturer's have necessarily optimized their calculators to show alternative, lower mercury options for the lamps you currently have. We usually figure out which of the current lamps are raising the overall picogram per lumen hour amount, and then contact the manufacturer or vendor and ask them to suggest alternatives for piloting. You can also zero in on the low-mercury line offered by a given manufacturer (e.g., the Philips Alto line). And, of course, if you have any T-12s, switching those to T-8s or T-5s will help with energy efficiency and dramatically lower the picogram per lumen hour value.

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