San Diego Emergency Generators

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I am working on a project in San Diego and from other parts of the country. I am wanting to run the building off of the emergency generators while I upgrade the service entrance. I was told that I can't do this because you can only run 20 hours of generator a year. Has anybody else had to deal with this?
 

RUWired

Senior Member
Location
Pa.
You might have to check with department of environmental protection and see if the generator is under a permit and what the rules are for the permit.

Rick
 

Twoskinsoneman

Senior Member
Location
West Virginia, USA NEC: 2020
Occupation
Facility Senior Electrician
I am working on a project in San Diego and from other parts of the country. I am wanting to run the building off of the emergency generators while I upgrade the service entrance. I was told that I can't do this because you can only run 20 hours of generator a year. Has anybody else had to deal with this?

I have heard of this but not dealt with it. It is my understanding that it is basically an environmental impact tax for running your generators.

This site confirms it http://blink.ucsd.edu/safety/environment/outdoor/air-pollution.html#Emergency-generators-(diesel-en
 
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kingpb

Senior Member
Location
SE USA as far as you can go
Occupation
Engineer, Registered
I am working on a project in San Diego and from other parts of the country. I am wanting to run the building off of the emergency generators while I upgrade the service entrance. I was told that I can't do this because you can only run 20 hours of generator a year. Has anybody else had to deal with this?

It is the way the Genset is permitted, i.e. standby/emergency power. You would need to get it changed to permitting for a peaking unit to run more hours, however even to do that there are some new air quality requirements that would require changes to the amount of emissions.
 

charlie b

Moderator
Staff member
Location
Lockport, IL
Occupation
Semi-Retired Electrical Engineer
You can have a generator with higher emissions, if you expect it to to run for a limited number of hours. But if the utility transformer were to fail, and if the utility needed a week to replace it, that generator would run for more than the prescribed number of hours. I suggest a conversation with the local authorities, to see what they will allow, and to see if they would require any special measures to reduce the emissions during your installation time.
 
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