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AllanJ 10-31-2011 08:47 AM

Running Generator Inside Garage or Basement
 
Is it considered acceptable to run a portable generator inside a garage or basement when the exhaust is piped to the outside?

Car repair shops often run cars in the closed building with the car exhaust piped through a small hole in the garage door to the outside.

SD515 10-31-2011 09:02 AM

I wouldn’t without a forced air-blower system. Something that’s sealed and provides a positive air flow to the outside.

AandPDan 10-31-2011 09:33 AM

Most cars aren't run for very long in the shop like that. Certainly not for hours on end.

Small engines usually create much more CO than do cars with emission controls.

It's a bad idea all around. Just put some plywood over it.

biggles 10-31-2011 09:57 AM

sure it is...:thumbsup: make it as short as possible on the connection from the muffler to the vent. use that aluminum dryer vent flex duct to extend it up keep it above the genny(heat rising) maybe even a dryer vent with a flap on it screw the vent in place.basement might be a little riskeeee with gasoline and a spark running:whistling2: inside...

carmusic 10-31-2011 10:14 AM

cars shop have open windows or do not close completely doors to get fresh air enter the shop

biggles 10-31-2011 10:45 AM

like this... http://i275.photobucket.com/albums/j...4/MVC-001S.jpg and this http://i275.photobucket.com/albums/j...MVC-002S-1.jpg treat yourself to some emergency lighting over the genny beats holding a flashlight in your mouth... goes for 90 minutes and shuts off when the genny comes up....might consider a couple inside the house to paint the ceiling with light and hallways with lights till you do the flip keep the troops calm.... http://www.grainger.com/Grainger/LIT...LE3?Pid=search called the maker of mine and they don't want the exhaust piped out just let it rise up into something like i do thinking it might back up into the muffler if hard piped

Auger01 10-31-2011 11:32 AM

A few CO alarms installed around the house might not be a bad idea if you set the genny up like that. Might want to take a life insurance policy too

jbfan 10-31-2011 11:42 AM

unbelievable!!!

gregzoll 10-31-2011 11:59 AM

Quote:

Originally Posted by AllanJ (Post 760676)
Is it considered acceptable to run a portable generator inside a garage or basement when the exhaust is piped to the outside?

Car repair shops often run cars in the closed building with the car exhaust piped through a small hole in the garage door to the outside.

Allan, when it is done in structures, the gensets are contained in concrete rooms, with a fire suppression system, that is also tied into the fuel cutoff. The noise alone would be more than someone could endure for more than 15 to 30 min's though.

Best bet, is to get one of the outdoor units, that no one would really notice outside, unless they were really looking for it. Would be no more obtrusive than a outdoor a/c unit. As for dirty power, hook up a power conditioner isolation transformer on those circuits that would be critical to possible issues with the dirty power.

Also, if you have a tractor with a PTO, you can get one of the gensets, that could be located in a structure, such as a shed or garage, and use the tractor's pto to power it. Secure the vehicle to the ground, it is outside, and the genset is indoors.

biggles 10-31-2011 12:42 PM

relax guys.........:wink:that is in a detached garage 25' into the back yard from the house....the cat that hangs in there while i run it snoozes away to the sound haven't lost her yet :whistling2: i leave the garage door open with a back window for cross vent so my neighbors :eek: can listen to it during a hit as IRENE was...ran 24/7 3 days straight except shutdowns for oil and gas refills..NOTE do not ever try to fill a generator while it is running.....:no:

jimmy21 10-31-2011 03:39 PM

Quote:

Originally Posted by biggles (Post 760810)
relax guys.........:wink:that is in a detached garage 25' into the back yard from the house....the cat that hangs in there while i run it snoozes away to the sound haven't lost her yet :whistling2: i leave the garage door open with a back window for cross vent so my neighbors :eek: can listen to it during a hit as IRENE was...ran 24/7 3 days straight except shutdowns for oil and gas refills..NOTE do not ever try to fill a generator while it is running.....:no:


You asked for our opinion if it is safe or not and we gave our opinion. I don't think i would consider that safe at all. Another thing to consider when comparing to cars is that cars have catalytic converters, that cut down like 99% of carbon monoxide. In an enclosed space, a modern car would take like 2 hours to kill you and the fumes would be unbearable. A machine like that, the carbon monoxide could kill you in a few minutes in an enclosed space. If your exhaust was leaking at all it could cause a serious threat. If it were me, i would build some sort of shed on the side of the garage, using non combustible materials and a fan, and still vent the exhaust outside

i would also be using something better than dryer duct. I would be building an exhaust out of automotive muffler tubing, that is welded together

frenchelectrican 11-01-2011 02:39 AM

I just don't know why the photo I have see it that really is a poor set up that is not even safe at any means.

I do have slow speed diesel generator that is enclosed in seperated room and this engine is pretty loud when it running full load if you stand inside that generator room it will sound like pile driver going off at pretty high rate speed the engine itself run 600 T/min ( RPM ) but close the door it pretty quite you don't hear it much however.,,

If you want enclose the generator do the right thing from start.

Oh alum dryer vent are not good for exhaust purpose two thing will happend viberatons will shake it apart and exhaust heat can actually deforum the alum if hot enough { the gaz generator exhaust temp useally run from 800 to 1300F basically the same tempture range as Automovite engine is and Diesel unit exhaust tempture are much lower than gaz }

That is the reason why #1 item the building inspectors go nuts when they see bad set up like that.

I have work on many differnt generators from small one to monster sized units so I know exactally will happend with it.

Merci,
Marc

Speedy Petey 11-01-2011 05:38 AM

Quote:

Originally Posted by biggles (Post 760725)
sure it is...:thumbsup: make it as short as possible on the connection from the muffler to the vent. use that aluminum dryer vent flex duct to extend it up keep it above the genny(heat rising) maybe even a dryer vent with a flap on it screw the vent in place.basement might be a little riskeeee with gasoline and a spark running:whistling2: inside...

The fact that you are saying this, and then it took three posts to tell us your is in a detached garage is irresponsible at best and stupid at worst!

It is NEVER OK to run a genny in a basement. NEVER!!!
It is quite risky running one in an attached garage. Several precautions MUST be taken.
It is not really risky running one in a detached garage with the thing running somewhere near the door.

The Rube Goldberg setup in that picture is scary! At least for everyone except the owner. :whistling2:

SD515 11-01-2011 05:49 AM

Speedy, you like the missing switch cover plate on the 2-gang switches?

biggles 11-01-2011 06:16 AM

then if the genny craps out :eek:....i switch over to the 2000 watt inverter off my 4 X 4 battery:wink: http://i275.photobucket.com/albums/j...4/MVC-013S.jpg


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