×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Electrical equipment

Electrical equipment

Electrical equipment

(OP)
I was wondering if IP65 is the international equivalent to Class 1 Div 2 group B (hydrogen)?

RE: Electrical equipment

Dear Mr thronec (Industrial)(OP)17 Mar 21 19:35
T. " I was wondering if IP65 is the international equivalent to Class 1 Div 2 group B (hydrogen)? "
C. NO. IP65 is NOT the international equivalent to Class 1 Div 2 group B (hydrogen)
Che Kuan Yau (Singapore)

RE: Electrical equipment

IP65 merely implies resistant to low pressure water jets, condensation, and water spray. It has nothing to do with flammability/explosivity/hazardous-location.

RE: Electrical equipment

NEC 2017 Art.501.10 Wiring Methods (B) for class 1 division 2 states:
(4) Boxes and Fittings. Boxes and fittings shall not be required to be explosionproof except as required by 501.105(B)(2), 501.115(B)(1) , and 501.150(B)(1).
501.105 Meters, Instruments, and Relays.
501.115 Switches, Circuit Breakers, Motor Controllers, and Fuses.
501.150 Signaling, Alarm, Remote-Control, and Communications Systems.
So if the junction -or pull box-does not contain any of this devices you may use NEMA 4 [or 4x]. If it does, usually you need NEMA 7.However, there are conditions in which you may use still NEMA 4.See NEC art.501.105(B)(2), 501.115(B)(1) , and 501.150(B)(1).

RE: Electrical equipment

In IEC land ATEX (Atmosperes Explosibles) is similar to the functional requirements of NEMA 7, and NEC listed location requirements. BUT NOT THE SAME. You can not meet the requirements of NFPA 70 (NEC) listed locations using ATEX equipment unless it also has a listing for the NEC application.
You also can not mix the Listed Location rules of the US National Electric Code with ATEX/IEC.

HOWEVER some equipment will be listed for both ATEX applications, and NEC listed locations. The equipment must pass the requirements of both sets of rules to carry this dual listing. This equipment could also carry an IP65 rating, but the IP 65 tells us nothing about the equipment's suitability for use in a hazardous (combustible) atmosphere.

IP 65 Protected from total dust ingress, Protected from low pressure water jets from any direction, limited ingress protection.
IP65 is similar to NEMA 4, or NEMA 6, but is not an exact match to either.

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close