Quality explosion proof exhaust fan

[Is this thing on]

Looking to add an exhaust fan to the garage, I rather explosion proof because of paint fumes and parts cleaner. it is a single car garage so it doesn't need to be a 5 foot monster.

Thanks

 

[lonestardiver]

Use a fan outside to push fresh air into the garage and then out through an exit vent. This gives you many options on type of fan you can use and it is not in the middle of those flammable vapors.

 

[Is this thing on]

Use a fan outside to push fresh air into the garage and then out through an exit vent. This gives you many options on type of fan you can use and it is not in the middle of those flammable vapors.

Not a good idea when painting. limiting dust and pollen and such being blown in.

 

[lonestardiver]

Even with an exhaust fan pushing air from the inside out, you still have air ingress from the outside coming in to replace that which was pushed out. Put some filters on it.

 

[loganb]

Marathon and Baldor(now ABB) are both quality motor brands often used in industrial applications. Most of the explosion proof motors the company I work for has in the exhaust stacks for paint booths are one of those 2 brands. There are various sources for the fan box/shroud/wall penetration, it really depends on how big of a hole you can put it and how concerned you(or your neighbors) may be with the aesthetics.

Be aware, there are different classifications of explosion proof motors, my expectation for what you're doing is a Class II, Group G will be adequate and kinder to the budget than a Class I/D 1 motor

https://www.worldwideelectric.net/articles/explosion-proof-electric-motor/

 

[Is this thing on]

Even with an exhaust fan pushing air from the inside out, you still have air ingress from the outside coming in to replace that which was pushed out. Put some filters on it.

Thanks but no.
My garage is not insulated , or air tight. Air will leak through the planking and siding covering that. But a fan blowing in, even with filters doesn't work.
been there, done that, had more junk in the paint than ever.

 

[Is this thing on]

Marathon and Baldor(now ABB) are both quality motor brands often used in industrial applications. Most of the explosion proof motors the company I work for has in the exhaust stacks for paint booths are one of those 2 brands. There are various sources for the fan box/shroud/wall penetration, it really depends on how big of a hole you can put it and how concerned you(or your neighbors) may be with the aesthetics.

Be aware, there are different classifications of explosion proof motors, my expectation for what you're doing is a Class II, Group G will be adequate and kinder to the budget than a Class I/D 1 motor

https://www.worldwideelectric.net/articles/explosion-proof-electric-motor/

Thank you.
It will be exhausting to back yard, no neighbors to worry about.

 

[Norcal]

Motors for hazardous locations are rather pricey but if the rest of the electrical system is not suitable for a hazardous location it does not make much sense to have one, there are fans that can have the motor outside the hazardous area.

 

[DeeKay]

If you're really worried about it I'd bet something like this would do fine.
https://www.northerntool.com/shop/tools/product_200461050_200461050
The manual says it's rated for Class1 Div1 Group C, D, Class 2 Div1 Group F,G which would cover what you're doing. But in order to actually take advantage of a motor(or any devices) explosion proof rating you have to wire it accordingly.
And as Norcal mentioned unless everything else in there(light switches, light fixtures etc) are rated as well it doesn't make a whole lot of sense to go that route.

If you could get a hold of a meter I'd bet you're well under LEL in there and could get away with an exhaust fan with just a regular TEFC motor.

 

[Metal-Marc]

I have an 18" squirrel cage with an external motor. Its great at pulling air and paint fumes out of the garage.

 

[Don1357]

Looking to add an exhaust fan to the garage, I rather explosion proof because of paint fumes and parts cleaner. it is a single car garage so it doesn't need to be a 5 foot monster.

Thanks

You are over thinking it a tad. If fumes were of enough concentration to cause an explosion you would not care as by then you would be on the floor passed out from said fumes.

 

[mcj115]

What type of rating are you looking for? A quick search on ebay show several options for 10" to 14" axial e rated exhaust fans starting in the $150 range. Granted it is only e rated and not ee or eee, but they do offer some explosion protection. Now the downside is they appear to be chinese generic quality fans so who know the standard to which they are really built.

 

[Is this thing on]

You are over thinking it a tad. If fumes were of enough concentration to cause an explosion you would not care as by then you would be on the floor passed out from said fumes.

Not the point, I have seen what happens when a house box fan is used, and paint fumes pass through it.
It is not pretty, and not worth the risk.

What you posted, would happen if you were not exhausting the fumes as all.
That would be stupid on many levels.

If I was only planning on maybe a little paint work, I might chance it, but with 4 vehicles to paint, and a lot of home furniture to stain and spray. I rather be safe than sorry.
The old pay a little now, or a lot later comes to mind.
A friends home burnt to the ground from a home box fan and paint fumes.

 

[fsae0607]

Why wouldn't a bathroom fan work? They're induction motors, so there's no arcing since there aren't any brushes in the motor. Should be safe enough, I would think.

 

[LS6 Tommy]

You are over thinking it a tad. If fumes were of enough concentration to cause an explosion you would not care as by then you would be on the floor passed out from said fumes.

Airborne paint dust is not a "fume"...

Tommy

 

[rburke65]

It amazes me how a question develops so many tangents so quick.

 

[Metal-Marc]

It amazes me how a question develops so many tangents so quick.

It's because of the fumes...

 

[metlmunchr]

Commercial spray booths typically use tubeaxial fans designed with the motor out of the airstream in order to avoid the need for an explosion proof electrical installation, which tends to be heart attack level expensive for a true code compliant installation.

The downside though is these fans are expensive too. https://www.grainger.com/search?cpn...earchQuery=spray+booth+fans&suggestConfigId=1

Those Chinese fans on eBay look interesting. Considering the price versus the domestic alternatives, I'd likely give one a try if I was in the market for a fan. The biggest factor in exhausting a spray booth is using proper paint arrestor pads rather than some dime store air filters, and matching the pad area to the fan cfm such that you maintain the recommended velocity thru the pads to capture the paint.

Avoid the temptation to use any flex duct in your exhaust system. No filters achieve perfect capture, and all the convolutions in flex make perfect places to trap anything that gets thru. This can create a far greater fire hazard than any open type motor in the air stream ever will.