Switching/ Sensors

[Alwayslearningelec]

Is there a switch that is involved in lighting control that gets run dorectly back to the relay panel? A override switch? Other switching and occupancy sensors get spliced the j-box for that fixture or fixtures I beleive. Is that right?

 

[Buck Parrish]

Yes, there are numerous ways you can switch lights. Automatically or manually.
relays, contactors, etc...

 

[Alwayslearningelec]

Yes, but the woring is what I am referring to.

 

[Buck Parrish]

I'm perplexed.:-?

 

[480sparky]

Yes, but the woring is what I am referring to.

Woring?

I guess you are asking about how to install a switch that will over-ride or bypass any photocells/timers/occupancy sensors.

 

[Alwayslearningelec]

What I was saying is there a switch that you run wiring directly back to the relay panel? Most switches sensors, regular 2 way, 3 way etc get the switch leg tied right into the lighting circuit( I beleive).

 

[quogueelectric]

What I was saying is there a switch that you run wiring directly back to the relay panel? Most switches sensors, regular 2 way, 3 way etc get the switch leg tied right into the lighting circuit( I beleive).

Carrier ,Andover, Johnson control systems sometimes have a main lighting relay panel which is computer controled from a relay panel usually located near the lighting panel.
Mostly though what I have been installing recently is localized motion/occupancy sensors (for example the wattstopper). which either switch each room locally or in larger rooms a ceiling mount sensor or sensors controling a localized relay to switch the room lights on and off when it detects motion.
These local systems I have been putting in I believe is in response to new energy codes.

 

[quogueelectric]

Many moons ago I worked exclusively installing Carrier systems for so called smart buildings for about 2 years straight. For example a lighting system in a department store generally had about 4 different levels. Night /security where almost no lights were on, Cleaning where a few more lights came on, Setup where stockroom and some floor lights came on, Then open mode where ALL floor lights and display lights/sign lights were fully on. these panels could control sign and parking lot/garage lights for just about any scenario. I also computer controled all of the hvac systems in each building. It was a pretty nice gig.

 

[480sparky]

What I was saying is there a switch that you run wiring directly back to the relay panel? Most switches sensors, regular 2 way, 3 way etc get the switch leg tied right into the lighting circuit( I beleive).

A switch is not required. Why do you need a switch?

 

[Alwayslearningelec]

Switching

Switching

This might be hard to view but if you enlarge it is just ok. The control device s which are low voltage control stations and sensors indicate on the schedule which circuits are being controlled. Now the way way I know it to work is that you come out of the lighting panel and some circuits(whichever are being controlled by the relay panel hit the relay panel then out to the lights. The control devices just get wired to the circuit controlled. Correct? I thought someone in the past had told me the overide goes all the back to the panel directly.

 

[480sparky]

I enlarge it, and I still can't read half of it.

"2. Provide photocell on/of control ??? override from the ??? system."

So far, I haven't been able to understand what you need a switch for, and what you want it to do.

"Provide override on/off control from control room in Building 305"

What does the 'override on/off control' do?

"1. Provide adjustable countdown timer function preset to 2 hours"

To control what? Why? You're only giving us a handful of pieces of the puzzle and not the image on the box to go by.