×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

UL Listing

UL Listing

UL Listing

(OP)
Hello,

The company that I work for is looking to UL list an electrical system we are building.  It includes an instrument that I will call the "Sensor Instrument" for detecting changes in material properties, a "Motion Controller" that controls motion in the X and Y directions,"Motors" and a "Computer"

Also when we are done we want the components of the system such as "Sensor Instrument" to be individually UL listed.  

Does anyone have a recommendation on where to go to get this tested and how to start the process?  Or does anyone just have any general advice?  We are located in Washington State.

Thank you.

RE: UL Listing

There is a UL facility in Camas, Washington.

RE: UL Listing

(OP)
davidbeach,

Thank you.

RE: UL Listing

Don't just stop at getting a quote from UL.. I'd highly recommend getting quotes from other NRTL's like ETL/MET/NTS and any others that test to the standards you require.

We have had a MUCH better experience with ETL versus UL.. You don't have to use UL.. Other companies can test to the same UL standards and many times will be cheaper. At least make them fight for the business.

also be aware of the difference between UL listed and UL recognized.. Something like your "sensor instrument" might be UL recognized in that it might have conditions of acceptability that must be provided by the end user of the equipment.. For an example.. Some UL standards might require a "fire enclosure".. Your sensor might not have that enclosure by itself.. But the equipment you (or your customer) mount that into might become the fire enclosure.. So now your sensor has a CofA stating that a fire enclosure must be provided by the end user.. This might be a good or might be a bad thing..

RE: UL Listing

(OP)
mcgyvr,

Thank you for your help on this!  You bring up some good points.

 

RE: UL Listing

lps for mcgyvr.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources