ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Ground fault remover :-)
by dsk - 11/30/20 03:51 AM
From an outsider- How does tipping work?
by Trumpy - 11/30/20 03:50 AM
Happy Thanksgiving
by Trumpy - 11/30/20 03:32 AM
Where is Everyone?
by Trumpy - 11/30/20 03:11 AM
What does your work place look like?
by Trumpy - 11/30/20 02:45 AM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 18 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
High Bay Occupancy Sensor #51225 04/25/05 07:06 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline OP
Has anyone out there used any occupancy sensors at mounting heights of 32' to 42' ? The application I'm looking at would involve both open areas and warehouse aisles.

Brand name & catalog numbers would be appreciated plus any good/bad experiances.



[This message has been edited by Tom (edited 04-25-2005).]

Few things are harder to put up with than the annoyance of a good example.
Work Gear for Electricians and the Trades
Re: High Bay Occupancy Sensor #51226 04/26/05 11:06 AM
Joined: Apr 2005
Posts: 33
rcksmith127 Offline
Are there columns you can mount them lower on? I think you are going to have problems with them at that elevation. 42'? That is almost three stories high. Leviton makes a good product. It is called "Occupancy Sensor". I have used these in many applications (not 32 or 42' high) but they are an excellent product.

[This message has been edited by rcksmith127 (edited 04-26-2005).]

Re: High Bay Occupancy Sensor #51227 04/26/05 02:40 PM
Joined: Feb 2003
Posts: 939
frenchelectrican Offline
is the area do have HID lighting in your area ?? well i will suggest that you concat RUDD lighting co.

but if you are going to add some motion sensor you have to make a choice useing " Hi-Low " hid lighting system or go with T-8 or T-5 hi bay flourscent lighting they do work pretty well what i heard about it but the cost wise i dont have direct answer right now.
this is the link to the ruud lighting company they have pretty good slection of light fixures as well

i know there are few other motion sensors like Watt stopper also but unforetally i dont have the link for that one if someone have it please do put a link in here . thanks

Merci , Marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Re: High Bay Occupancy Sensor #51228 04/26/05 04:42 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline OP
Rick (I'm guessing),

Unfortunately, no useable columns for the most part. I can mount sensors lower, at the dead end of each aisle, but the aisles are about 85 feet long & my past experiance with long aisles was not awe inspiring. I can probably do the same with the large open area.

I'm considering using Hubbell sensors that are both passive infra-red & ultrasonic.


I'm going to be using T5 HO fixtures. Unfortunately, I will not be able to use the Ruud fixture since something else has been specified & I don't think I can get the owner to change their minds. I've used Ruud in the past & what impresses me about that company is how helpful they are when you encounter a problem.


Few things are harder to put up with than the annoyance of a good example.
Re: High Bay Occupancy Sensor #51229 04/27/05 08:35 AM
Joined: Feb 2003
Posts: 69
jbfan Offline
The lighting company that replaced our HId with t-8's used a sensor on each end of the asile, and one in the middle of the asile. Our ceiling vary from 30 to 35' tall. They dropped 1/2 conduit from the ceiling about 2-3', then mounted the sensors at an angle into the asiles. In the center, they dropped 2-3 ' and put a round sensor. In the main asiles they have round sensors. I do not have the type of sensors. They seem to work ok for the most part, However we had a new roof put on and the sensors became misaligned, and we have not adjusted them yet.

"Yes I am a Pirate, 200 years to late" Jimmy Buffett
Re: High Bay Occupancy Sensor #51230 04/27/05 05:24 PM
Joined: Oct 2000
Posts: 2,721
Scott35 Offline
Broom Pusher and

They dropped 1/2 conduit from the ceiling about 2-3', then mounted the sensors

That's a great idea!
Mount the Occ. Sensors to 4s Boxes (with a 1 Gang Ring or equal mount), and suspend the Sensor/Box assembly from a Conduit type suspension means (like the way a Ceiling Fan is suspended on a GRC Nipple).

Proper supporting for a "Typical" conduit run, along with seismic activity (if applicable) should be included too.

As for the Occupancy Detectors, the Company "Watt Stopper" has a line of Ultrasonic Occupancy Detectors that might be perfect for your application.
There are "Dual Receiver" (Microphone) types with 1000 Ft² and 2000 Ft² ranges, which would be ideal for the "Central" areas of the Aisles, and "Single Receiver" type with 500 Ft² range - which would work great on the "Ends" of each Shelving Aisle.

These Occ. Detectors may be fine tweeked for delay off time and sensitivity.
They are used in conjunction with Lighting Contactors - known as "Power Packs", but any Contactor with a low voltage coil may be used - provided you have some type of low voltage power supply to run the detectors (24 VDC I think...).

Let me know if you would like additional information.


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!
Re: High Bay Occupancy Sensor #51231 04/27/05 06:37 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline OP
jbfan & Scott,

I agree that putting a sensor on a conduit stem is a great idea with one exception, I didn't think of it. [Linked Image] The only thing I would caution anyone on is to avoid using a sensor that only works on passive infrared energy. These things really don't work well when they get up in elevation because of the higher ambient temperatures.

Thanx for the Wattstopper lead. I've been to their website. If this project moves forward, I will probably contact them for technical advice.


Few things are harder to put up with than the annoyance of a good example.


2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman


Member Spotlight
Bay Area
Posts: 61
Joined: August 2007
Show All Member Profiles 
Top Posters(30 Days)
Trumpy 17
Popular Topics(Views)
272,108 Are you busy
206,006 Re: Forum
194,036 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3