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#176830 - 04/13/08 11:51 PM enclosure under sprinkler ?
learner Offline
New Member

Registered: 04/13/08
Posts: 3
Loc: BC Canada


Base on CEC .

Does anybody know " What type enclosure box - 3R or 6P is right choice to used Under sprinkler " ?

Which rule?

thank you advance.


2014 / 2011 NEC & Related Books and Study Guides
#176864 - 04/14/08 08:18 PM Re: enclosure under sprinkler ? [Re: learner]
Sixer Offline

Registered: 08/08/05
Posts: 264
Loc: Canada
Rule 26-008 and Appendix B
Is the enclosure in an electrical room or vault?

"Will it be cheaper if I drill the holes for you?"

#176865 - 04/14/08 08:35 PM Re: enclosure under sprinkler ? [Re: Sixer]
learner Offline
New Member

Registered: 04/13/08
Posts: 3
Loc: BC Canada


Thank you.

the quiz not point out where is it.
from "Rule 26-008 and Appendix B" & table 65, I still can't make sure which type is right.

so could you please give more recommend?

#176880 - 04/15/08 05:52 AM Re: enclosure under sprinkler ? [Re: learner]
Rick Kelly Offline

Registered: 01/11/06
Posts: 60
Loc: Iqaluit, NU, Canada
As per 2-400 and Table 65, type 4, or better, would be required.

#176892 - 04/15/08 10:00 AM Re: enclosure under sprinkler ? [Re: Rick Kelly]
mikesh Offline

Registered: 06/07/06
Posts: 614
Loc: Victoria, BC, Canada
If the sprinkler is usually operating a type 4 is required. If it is for fire protection then any enclosure appropriate for the area without spriklers is ok. The normal use is what we determine the enclosure type not for a fire.

Now having said that there still are requirements for enclosures and equipment where a stream of water from a sprinkler head is required then 26-008 but that applies to the panels, transformers, switch boards etc.

A normal outlet box or JB where only wire and devices are installed would not require a special enclosure or every sprinled building would need to be completely wired per section 22.

In the case of a fire I presume we don't want the distrobution or transformers to fail from the sprikler putting water on the equipment. A fire pump or emergency lighting might be at stake. A wet location JB is overkill as this is a dry location except when a fire is present.

#177650 - 05/09/08 04:12 AM Re: enclosure under sprinkler ? [Re: mikesh]
learner Offline
New Member

Registered: 04/13/08
Posts: 3
Loc: BC Canada

Thank you all.
because It's a quiz. the answer is type 3R or 6P only.
base on R26-008. I choice 3R. is it right?


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