The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Industrail Control Panel bonding per 409.108
by sparkyinak
22 minutes 4 seconds ago
Calling all Non-US members!! (Non-US only)
by aussie240
12/07/16 02:39 AM
Photo Upload Tutorial
by DanK
12/06/16 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 10
sparkyinak 9
Texas_Ranger 8
Potseal 6
Who's Online
2 registered (LongRunner, sparkyinak), 94 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#19243 - 12/22/02 07:18 AM What classification is this location?
Edward Offline
Member

Registered: 12/14/02
Posts: 309
Loc: California
I am working in a warehouse/production warehouse where the company makes wooden garage doors. There are many table saws,dust collectors,routers,sanders...Anotherwords it is a huge wood working shop.
What class is this location classified?
Class1,2 or 3?
_________________________
Thanks
Edward

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#19244 - 12/22/02 05:33 PM Re: What classification is this location?
dana1028 Offline
Member

Registered: 01/09/02
Posts: 163
Loc: San Carlos, CA
prob. class II

(1999) 500-8 Class II Locations: 'are those that are hazardous because of the presence of combustible dust....see 500-8(a) & (b) for Div. 1 & 2 conditions.... Art. 502 then gets into the wiring methods for each division.

Top
#19245 - 12/23/02 10:34 AM Re: What classification is this location?
JBD Offline
Member

Registered: 07/12/01
Posts: 599
Loc: WI, USA
Normal saw dust is not enough to justfy a Class II environment.

We have a door manufacturer, down the road, and nothing in the production area is "explosion-proof" rated.

However, we let the local fire department determine all of our classifications.

Top
#19246 - 12/23/02 06:24 PM Re: What classification is this location?
Mike Wescoatt Offline
Member

Registered: 06/17/01
Posts: 164
Loc: Cedar City, Utah
In our wood and metal shops we don't have any special requirements set by the Fire Marshall, but we take it an extra step and make everything NEMA 3 or better; no NEMA 1 enclosures. We do have dust collection and fume extraction, though.
_________________________
Mike Wescoatt

Top
#19247 - 12/24/02 06:05 PM Re: What classification is this location?
nesparky Offline
Member

Registered: 06/21/01
Posts: 650
Loc: omaha,ne
This depends on several factors Number of air changes/minute, is the dust collected and routed away from electrical equipment, layout of the equipment, etc.
This is why we ask the fire marshal to make the determination. They usually can get the designers to do all the engineering necessary to properly make the call. The fire marshal's office usually has a big enough hammer to get this done- if they care to.
_________________________
ed

Top



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