2014-04-01 13:48:25 | 505.2.3 DAYLIGHT ZONE CONTROL. |
| DAYLIGHT ZONES, AS DEFINED BY THIS CODE, SHALL BE |
| PROVIDED WITH INDIVIDUAL CONTROLS THAT CONTROL THE |
| LIGHTS INDEPENDENT OF GENERAL AREA LIGHTING. CONTIGUOUS |
| DAYLIGHT ZONES ADJACENT TO VERTICAL FENESTRATION ARE |
| ALLOWED TO BE CONTROLLED BY A SINGLE CONTROLLING DEVICE |
| PROVIDED THAT THEY DO NOT INCLUDE ZONES FACING MORE |
| THAN TWO ADJACENT CARDINAL ORIENTATIONS (I.E., NORTH, |
| EAST, SOUTH, WEST). DAYLIGHT ZONES UNDER SKYLIGHTS MORE |
| THAN 15 FEET (4572 MM) FROM THE PERIMETER SHALL BE |
| CONTROLLED SEPARATELY FROM DAYLIGHT ZONES ADJACENT TO |
| VERTICAL FENESTRATION. |
| |
| EXCEPTION: DAYLIGHT SPACES ENCLOSED BY WALLS OR CEILING |
| HEIGHT PARTITIONS AND CONTAINING TWO OR FEWER LIGHT |
| FIXTURES ARE NOT REQUIRED TO HAVE A SEPARATE SWITCH FOR |
| GENERAL AREA LIGHTING. |
| |
| 505.2.4 EXTERIOR LIGHTING CONTROLS. |
| LIGHTING FOR ALL EXTERIOR APPLICATIONS NOT EXEMPTED IN |
| SECTION 505.1 SHALL HAVE AUTOMATIC CONTROLS CAPABLE OF |
| TURNING OFF EXTERIOR LIGHTING WHEN SUFFICIENT DAYLIGHT |
| IS AVAILABLE OR WHEN THE LIGHTING IS NOT REQUIRED |
| DURING NIGHTTIME HOURS. LIGHTING NOT DESIGNATED FOR |
| DUSK-TO-DAWN OPERATION SHALL BE CONTROLLED BY EITHER A |
| COMBINATION OF A PHOTOSENSOR AND A TIME SWITCH, OR AN |
| ASTRONOMICAL TIME SWITCH. |
| |
| LIGHTING DESIGNATED FOR DUSK-TO-DAWN OPERATION SHALL BE |
| CONTROLLED BY AN ASTRONOMICAL TIME SWITCH OR |
| PHOTOSENSOR. ALL TIME SWITCHES SHALL BE CAPABLE OF |
| RETAINING PROGRAMMING AND THE TIME SETTING DURING LOSS |
| OF POWER FOR A PERIOD OF AT LEAST 10 HOURS. |
| |
| EXCEPTION: LIGHTING FOR COVERED VEHICLE ENTRANCES OR |
| EXITS FROM BUILDINGS OR PARKING STRUCTURES WHERE |
| REQUIRED FOR SAFETY, SECURITY, OR EYE ADAPTATION. |