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#176812 - 04/13/08 05:55 AM Air curtains
Oh Well Offline

Registered: 12/12/05
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

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#176814 - 04/13/08 08:47 AM Re: Air curtains [Re: Oh Well]
leland Offline

Registered: 08/20/07
Posts: 856
Loc: 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 06:11 AM Re: Air curtains [Re: Oh Well]
Rick Kelly Offline

Registered: 01/11/06
Posts: 60
Loc: 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.



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