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Joined: Jun 2017
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Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
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I have 200amp service at my house.
I want to run 100amp service to a garage out back.
It's 275 feet away. I will rent a trencher, and run it in conduit underground.
The garage is small 24x32 probably.
I want to be able to run everything in there without worrying about not having enough.
220, welder, furnace, lights, tools, I want to have plenty and not need to worry about it.
What wire do I need to get this 275 feet.
Thanks
- Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
Posts: 2,435 Likes: 2 |
This is what I'm coming up with. Is this right? - Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Dec 2003
Posts: 86,343 Likes: 33
Campfire Oracle
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Campfire Oracle
Joined: Dec 2003
Posts: 86,343 Likes: 33 |
Think you’ll be ahead to just get your electric provider to put in another 200 A drop.
If you take the time it takes, it takes less time. --Pat Parelli
American by birth; Alaskan by choice. --ironbender
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Joined: Sep 2011
Posts: 61,267 Likes: 31
Campfire Kahuna
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Campfire Kahuna
Joined: Sep 2011
Posts: 61,267 Likes: 31 |
There are better folks than I to answer. I'll agree with 200 amp. I don't think conduit is needed.
These premises insured by a Sheltie in Training ,--- and Cooey.o "May the Good Lord take a likin' to you"
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Joined: Aug 2010
Posts: 28,507 Likes: 9
Campfire Ranger
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Campfire Ranger
Joined: Aug 2010
Posts: 28,507 Likes: 9 |
This is what I'm coming up with. Is this right? - Jake I wouldn’t doubt it
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
Posts: 2,435 Likes: 2 |
Think you’ll be ahead to just get your electric provider to put in another 200 A drop. Are you referring to cost? Or reliability? Cost will be cheaper long term to run my own line to avoid paying the monthly service fee for a second service. If it's a reliability issue due to the length... then I'll get another service. I want it to be usable and reliable. - Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
Posts: 2,435 Likes: 2 |
There are better folks than I to answer. I'll agree with 200 amp. I don't think conduit is needed. Copy. I'm just gathering info. If dropping another service is the right way that's what I'll do - Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Aug 2010
Posts: 28,507 Likes: 9
Campfire Ranger
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Campfire Ranger
Joined: Aug 2010
Posts: 28,507 Likes: 9 |
You might get away with smaller than a 100 amp just for a furnace and a welder .
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Joined: Sep 2015
Posts: 833
Campfire Regular
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Campfire Regular
Joined: Sep 2015
Posts: 833 |
2/0 Copper is way more than needed. Are you going to feed from a breaker in the house? 2 awg copper is probably enough 1 awg copper is plenty. Aluminum 1/0 or 2/0 is plenty. The old school taught us increase 1 size for 300 feet of wire.
If you don't have to pay for utility poles etc Ironbenders advice is solid. If you're going to trench for communications probably better off doing both.
Good luck and shoot straight y'all
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
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You might get away with smaller than a 100 amp just for a furnace and a welder . I don't want to get away with anything orgo the minimum. Want to do it right. I'm early 30s and no idea what I may get into some day. Want to run this the right way the first time. - Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Sep 2011
Posts: 61,267 Likes: 31
Campfire Kahuna
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Campfire Kahuna
Joined: Sep 2011
Posts: 61,267 Likes: 31 |
These premises insured by a Sheltie in Training ,--- and Cooey.o "May the Good Lord take a likin' to you"
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Joined: Jan 2016
Posts: 12,154 Likes: 18
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2016
Posts: 12,154 Likes: 18 |
Just get another service meter. You’ll be way ahead.
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Joined: Jul 2004
Posts: 3,147 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Jul 2004
Posts: 3,147 Likes: 1 |
Yep iffn I was needing 200 amps then I would add another meter box. Prolly cheaper as well?
If you find yourself in a hole....quit digging
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Joined: Mar 2009
Posts: 1,871 Likes: 5
Campfire Regular
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Campfire Regular
Joined: Mar 2009
Posts: 1,871 Likes: 5 |
How much is the anticipated maximum load needed from the 200amp service for the house lighting, heating, cooking etc., and do you really have 100amp of spare capacity?
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Joined: Dec 2003
Posts: 86,343 Likes: 33
Campfire Oracle
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Campfire Oracle
Joined: Dec 2003
Posts: 86,343 Likes: 33 |
Think you’ll be ahead to just get your electric provider to put in another 200 A drop. Are you referring to cost? Or reliability? Cost will be cheaper long term to run my own line to avoid paying the monthly service fee for a second service. If it's a reliability issue due to the length... then I'll get another service. I want it to be usable and reliable. - Jake To be clear, I’m not an electrician. It sounds like the garage is essentially going to be a shop. 100 amp May be sufficient. Don’t know what the voltage drop at 275 feet will be. You said you don’t know what your future needs will be. It would be hard to max out a 200 A service. Good luck.
If you take the time it takes, it takes less time. --Pat Parelli
American by birth; Alaskan by choice. --ironbender
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Joined: Sep 2023
Posts: 1,421 Likes: 2
Campfire Regular
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Campfire Regular
Joined: Sep 2023
Posts: 1,421 Likes: 2 |
Pros and cons. Check with your utility company on your options. The home owner is responsible past the meter. A new service usually would be maintained by the utility company to the meter. If you plan to add solar, think it through. Also separate service you would be able to write off the shop bill on your taxes. If allowed someone down the road may be able to convert to guest quarters if allowed. My 2 cents.
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
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Just get another service meter. You’ll be way ahead. That is sounding like the right way...
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Jun 2017
Posts: 2,435 Likes: 2
Campfire Regular
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OP
Campfire Regular
Joined: Jun 2017
Posts: 2,435 Likes: 2 |
I'm leaning towards a new service.
I've got a call in to a friend of a friend electrician.... hopefully he'll guide me in the right way. I do most of my own work. But admittedly don't know squat about electricity.
- Jake
Small Game, Deer, Turkey, Bear, Elk....It's what's for dinner.
If you know how many guns you own... you don't own enough.
In God We Trust.
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Joined: Feb 2007
Posts: 541
Campfire Regular
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Campfire Regular
Joined: Feb 2007
Posts: 541 |
Pull up an ampacity chart for the type of wire you will be using. Select wire size that matches your desired amperage. This will be a starting point.
Next use an online voltage drop calculator to determine final size based on run length. You want the voltage drop percentage to be less than 3%. At 275' you will probably need to bump up a couple gauge sizes to get below 3%.
Make sure breakers and lugs will handle the upsized wiring. Select appropriate conduit size and have "fun".
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Joined: Nov 2009
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Campfire Ranger
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Campfire Ranger
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Old Turd- Deplorable- Unrepentant Murderer- Domestic Violent Extremist
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This will be my last post! Flave 1/3/21
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