ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#183146 - 12/28/08 11:08 AM Class-II,Div 1?
leland Offline
Member
Registered: 08/20/07
Posts: 853
Loc: Lowell area, Ma. USA
I had a discussion the other day with my office, I feel weather tight would meet the code. (existing install is Cls2-div1).
Coal power plant, dock side open conveyer for unloading the barge, Only a shroud over the belt.
My scope: Fire alarm pull stations,120V AC onthe outside railing,notification only to control room. Deluge is manual operation.
The railing is 8' away from the conveyer system,in the wide open air,along the river. All conduit is threaded rigid.
I feel weather tight would be enough.
Top
2017 / 2014 NEC & Related Books and Study Guides
#183155 - 12/28/08 12:26 PM Re: Class-II,Div 1? [Re: leland]
renosteinke Offline
Cat Servant
Member
Registered: 01/22/05
Posts: 5316
Loc: Blue Collar Country
For the most part, you're correct. There are two situations that bear considering, though:
1) Where there are moving parts. For example, you don't want dust to get within a breaker, and prevent it from operating. There you would be looking for a dust-tight enclosure; and,
2) Where heat is generated. Motors and light fixtures must remain cool enough that they do not ignite the dusts ... even when they are buried in the dust.
Top

Member Spotlight
Member Since: 04/03/02
Posts: 6778
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 64 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Scotto, Freecrowder, clee512, Jdscott2005, FAIZAN

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals