Generator Standoff From House? - Electrical - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical


Thread Tools Display Modes
Old 07-02-2012, 01:20 PM   #1
raylo32's Avatar
Join Date: Nov 2006
Location: Maryland (DC 'burbs)
Posts: 1,442
Rewards Points: 1,294

Generator standoff from house?

No, I am not in Iraq but sometimes it feels like it with our power system grid lack of reliability. Anyway, the most recent spate of multi-day power outages here in MD, this time arguably not that out of line with the exceptional storm system we had Friday night, has many of us thinking again about backup power solutions.

Aside from the electrical connection, disconnect switch and load calulation issues, I was wondering if there is a code for minimum standoff between an occupied structure and a permanently installed generator, like a Generac system for carbon monoxide and/or fire prevention reasons? Several of us here live in townhomes that have limited distance between the houses and rear property lines that border common areas. I know, we need to check the covenants and all that. Just wondering if there is a minimum standoff in the code that would make it futile to look into this in more detail.


Last edited by raylo32; 07-02-2012 at 01:22 PM.
raylo32 is offline   Reply With Quote
Old 07-02-2012, 01:40 PM   #2
Master Electrician
Join Date: Mar 2010
Location: Toronto Ontario
Posts: 1,165
Rewards Points: 500

i've seen differing answers on this, your local code may have something to say about it as well. Best answer i can tell you is that you need to use your discretion and not mount it close enough to the house that the exhaust will enter the house and there's no risk of fire from the generator overheating


Sarcasm is my friend
I'm here to learn too, i do mostly commercial/industrial/new construction and this place is a great way to pick up tips on residential from some good electrical minds. Excuse the spelling, my phone has a mind of it's own.
andrew79 is offline   Reply With Quote
Old 07-02-2012, 05:04 PM   #3
Join Date: Sep 2011
Posts: 90
Rewards Points: 75

I believe the newer Generac units only need 18" from the house and something like five feet away from any openings such as doors and windows etc. However, the city where you live or the state of MD may have local ordinaces that are more restrictive.
Auger01 is offline   Reply With Quote
Old 07-05-2012, 06:31 PM   #4
Join Date: Jan 2012
Posts: 36
Rewards Points: 25

The above link will give you the recommended safe distances for gas powered generators. I'm not sure what the standards are for natural gas generators.

I have a gas powered generator that is about 20 feet from the house, and we keep the windows on the generator side of the house closed when running it.
Arnold Ziffel is offline   Reply With Quote
Old 07-05-2012, 07:50 PM   #5
Bill Kearney
Join Date: Apr 2009
Location: Bethesda, MD USA
Posts: 2,003
Rewards Points: 1,174

Check with your local county zoning office. Most can't be within 4' of an openable window, this to avoid carbon monoxide fumes from drifting back into the house and killing you. Then there's the property line setback, around here you cannot put one within the existing setback areas. This often means the unit can't be on the side of the house (where the electrical panel is located) but has to be in the backyard instead.
wkearney99 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
My house's previous owner - DIY horror stories Leah Frances General DIY Discussions 153 01-21-2016 07:18 PM
Cape Cod Style House Attic/Crawl Space Insulation Help Danielg Insulation 24 05-21-2012 08:20 AM
Attaching wood fence to house TheCowGod Building & Construction 5 04-13-2012 03:57 PM
Attach ledger to vinyl sided house JamyTheBuilder Building & Construction 3 03-14-2012 02:54 PM
I have Central Heating & Air, but house won't cool down..HELP!! exiledone1 HVAC 13 07-10-2009 10:09 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1