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Re: Lighting control in electrical equipment rooms I like Hurks idea also. However, energy codes limit the amount of time you can override the automatic lighting controls to 4 hours for Ashrae or 2 hours for IECC. The 3 way switch is an indefinite override. From an energy perspective, it defeats the purpose of the automatic lighting control
My point exactly. There are several of these timers installed in electrical rooms through out the place I work. To me its not "automatic" because you have to press the button to turn it on, after you do that the timer starts counting down and eventually shuts off lights. I don't like this and I'm trying to figure out if this is code compliant ...
Resort setting, Outdoor Shore lighting, System Requirements: 1.) Turn ON15-30 minutes before Dusk everyday. 2.) Turn OFF at approx. 1:00AM 3.) Turn ON ~1 hour before Dawn 4.) Turn OFF at Dawn 5.) Set it and forget it system : - ) Existing: Globe Lighting on poles already , 120VAC/20A single circuit, ~10-12 Poles, A19 lamps - 2700K - 1500l ...
This is a 2 part question using a panelboard installed in a conference room as an example. Per the 2015 IBC 1008.3.3.1, there is a requirement to have emergency lighting in "Electrical equipment rooms" however, no definition is provided for "electrical equipment rooms". Would the conference...
Since the invention of low wattage LED outdoor lighting, we moved away from lighting contactors, & control panels. Most things can be handled by a simple 120v timer.-----The only way I see to have the timers indoors, (1 location), and the photocells outside for each area; is to have a photocell with separate contacts.
Hello everyone. I have bunch of lights in the store controlled by the time clock and contactor. Clock Turns them on in the morning and shuts them off in the evening. I need to connect an override switch, in case someone has to work early or during the night when the lights are off. So to be...
Are there any hardwired, inline timers that allow you to turn 3 lighting circuits on and off with only one timer? Naturally, I think I would need 3 timers. But then again, I imagine theres many commercial applications where they have more then one lighting circuit they want on a timer.
Override should be in both logic sets and all possible settings: time clock controlled on and off, and desired on and off. Matt87 and crispysonofa, a single snap switch will not turn on the lights if the clock calls for them to be off, and a 3-way will not turn off the lights if the time clock calls for them to be on.
4 way control with digital timers. 4 way control with digital timers. How about making your four way system control a digital timer to control the switch leg to your Ltg.? Or if your Ltg. Load is is to great for your timer, you could could have your timer control a relay that closes and opens the Ltg. circuit.
Some energy codes require occupancy sensors, but as mentioned above, there is usually an exception that the energy code doesn't apply if its a safety or security issue. The NEC requirement leaves no doubt - using only an occupancy sensor in an electrical room is a safety issue. A simple toggle switch is fine for an electrical room.