ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Electrode boilers question
by annemarie1. 04/27/17 01:40 PM
Why cables look like they do
by LongRunner. 04/26/17 09:36 AM
Dimmable LED 2x4 lay in fixtures
by HotLine1. 04/24/17 05:43 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,860 Are you busy
169,656 Re: Forum
162,897 Need opinion
Who's Online Now
0 registered members (), 54 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#176812 - 04/13/08 08:55 AM Air curtains  
Oh Well  Offline
Member
Joined: Dec 2005
Posts: 12
Is it permissable to group two or more 3 phase air curtains on one feed? In addition to a blower they of course have a heating element. Also being as the only control is a three position rocker switch with an off position is a disconnecting device required? Thanks


Tools for Electricians:

#176814 - 04/13/08 11:47 AM Re: Air curtains [Re: Oh Well]  
leland  Offline
Member
Joined: Aug 2007
Posts: 853
Lowell area, Ma. USA
I would think "why not"? So long as your with in the ckt limitations.
As for the disconnect: So long as it is within site of all three, and meets the load requirements. Why not?


#176881 - 04/15/08 09:11 AM Re: Air curtains [Re: Oh Well]  
Rick Kelly  Offline
Member
Joined: Jan 2006
Posts: 60
Iqaluit, NU, Canada
In a nut shell, yes and yes.

Rule 28-600(3) permits having more then one air curtain on a single disconnecting means.

Rule 28-602 describes what is permitted as far as a "disconnecting means" is concerned, and no, a three position selector switch is not adequate.

Rule 28-604(5) requires that the disconnecting means be located within 3m of the equipment and in clear sight. I would consider this equipment to be "air conditioning" equipment because of the heating element.

Rick...



Member Spotlight
CDS
CDS
Nicholson Ga
Posts: 34
Joined: June 2006
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 15 (0.003s) Memory: 0.7513 MB (Peak: 0.8748 MB) Zlib enabled. Server Time: 2017-04-28 10:07:38 UTC