The answer from JayL contains the following: The residential code says pendant sprinklers must be at least 3 ft from obstructions such as ceiling fans and lights (as measured from their centers) 8.2.5.2.2 The distance shall be measured from the center of the sprinkler … As required by Section 11.2.3.2.4, 1500 square feet is Sprinkler heads are referred to simply as sprinklers ... hot water pipes, light fixtures, etc. The POR was required to submit sprinkler design intent documents reviewed by a POR competent in sprinkler design prior to submission of the . When an obstruction gets wider than 4 feet, such as duct work, then additioanl heads may be required underneath the obstruction. ft. and comply with code? NEC 410.8 - Wiring Methods closet lighting fixtures Luminaires (lighting fixtures) installed in clothes closets shall have the following minimum clearances from the defined storage area: 300 mm - 12 inches for surface incandescent fixtures, 150 mm 6inches for recessed incandescent fixtures , 150 mm 6 inches for fluorescent fixtures. A sprinkler head is considered to be obstructed when an object prevents the discharge pattern from fully developing or reduces the sprinkler density. 1. The light fixture and sprinkler head location design were left to the contractor. The only concern the NEC has concerning light fixtures and a normal bath tub or shower is if a light fixture is installed exposed to the inside of the shower stall itself. • Do not install light fixtures, exit signs or other … Typically the light fixtures are not considered an obstruction to the spray pattern of the sprinkler head. Per 2002 NFPA 13 (the sprinkler code) Table 8.3.2.5(c), 0-250 W light fixture requires a minimum distance of 6 inches from ordinary-temperature sprinklers, and 3 inches from intermediate-temperature sprinklers. Also, 250-499 W fixtures require a clearance of 12 and 6 inches respectively. The sprinks can move there heads to locations that meet their code standards and don't interfere with the lighting layouts. As long as the light box is inside the wall and facing into the other room inches from the shower head pipe is no violation of hte NEC. As long as the light fixture does not obstruct the sprinkler spray pattern, your fine. Can the existing sprinkler system be enlarged accommodate 60,000 sq. Some special requirements in the standard, for example minimum distance between sprinklers on slopped ceilings • Minimum operating pressure of 7 psi for any sprinkler … As an electrician, I don't concern myself with sprinkler codes since my lighting layouts are set by architectural design. In addition, s idewall sprinklers shall be located no closer than 4 ft from light fixtures or similar obstructions. For example: Assuming a light or ordinary hazard occupancy, an appropriate area of sprinkler operation selected from Figure 11.2.3.1.1 is 1500 square feet. The reason I ask is that this answer regarding light fixture distance from fire sprinklers has a distinctly different answer. The distances between light fixtures or similar obstructions located more than 4 ft from the sprinkler shall follow minimum clearances as describe d in Table 8.7.5.1.3 of NFPA 13: There are some cases where zero clearance is acceptable (recessed light next to dropped sprinkler head). 8.2.5.2.1 Pendent sprinklers shall be located at least 3 ft (914 mm) away from obstructions such as ceiling fans and light fixtures unless the requirements of 8.2.5.4 are met. Location requirements come into play when a light fixture or other object can obstruct the spray pattern of the sprinkler. In either ... and conveyors under a sprinkler head. Since you state its a concealed light fixture, I'm going to say there in no requirement. 11.2.3.1.1 in accordance with Section 11.2.3.2.7. Light fixtures, not problem. sprinkler shop drawings.
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