Load calculation form PDF?

[TAftonomos]

Is there an online source for a load calculation form? My county wants one submitted with an electrical permit for the detached garage to prove to them why I need more than a 60 amp panel in a 2000sq ft garage.

I plan to use (which I currently have) a lift, Lincoln 275 tig, Lincoln 180 MIG, Bridgeport Mill, Jet lathe, along with the well pump for the property. I plan on adding a 5 ton A/C system in the near future. The welder alone will draw 97 amps wide open.

Distance from the garage to the transformer is ~44'.

DIY electrical is going to cost me approx $500 for all the materials

Hiring a contractor is going to run me a minimum of $1200. $700 seems like a lot of extra money for red tape.

Maybe it's not?

 

[LXCam]

Pm me your email and tomorrow I'll send you a panel schedule in excell along with an example on how to fill out. I've already plugged in the formulas so once you enter all the values, it'll spit out the answer. But considering your list, it will most likely show you need around a 200amp service. That's when you'll need to explain to the building department or plan checker that on the average you true connected load at worst will be a combined load of lighting, welder and air compressor running simultaneously....well and maybe the beer fridge .

This is assuming its only you working. Most home shops only really need a 100-125amp service.

 

[TAftonomos]

Wow what can I say, thank you! PM sent. $700 buys a few more tools, or a lot of beer.

 

[bczygan]

How about one for us?

 

[bczygan]

Is there an online source for a load calculation form? My county wants one submitted with an electrical permit for the detached garage to prove to them why I need more than a 60 amp panel in a 2000sq ft garage.

I plan to use (which I currently have) a lift, Lincoln 275 tig, Lincoln 180 MIG, Bridgeport Mill, Jet lathe, along with the well pump for the property. I plan on adding a 5 ton A/C system in the near future. The welder alone will draw 97 amps wide open.

Distance from the garage to the transformer is ~44'.

DIY electrical is going to cost me approx $500 for all the materials

Hiring a contractor is going to run me a minimum of $1200. $700 seems like a lot of extra money for red tape.

Maybe it's not?

It's for the labor!!! And the license.

 

[LXCam]

How about one for us?

I'm clueless on how to post it without hosting to a website. If you can do it, hell I'll send you one for both single and three phase.

And no problem OP, I hope it helps. As far as cost associated, I'm in complete agreement with the other guy. Overhead takes money to cover it, I was a commercial/industrial electrical contractor for 20 years. Its a legitimate expense as the liability cost for residential work is double that of the strictly commercial side. Primary reason is its the most litigated sector in construction. Every year at renewal time after my audits were completed I was required to sign a affidavit stating we did not touch any resi projects (simply put). It always cracked me up that I could do work in facilities that had millions upon millions if dollars in exposure, but gawd forbid I hang a ceiling fan in a house.

 

[tncatadjuster]

I would hire this out and make the money up somewhere else.

 

[Stuart in MN]

Fine Homebuilding magazine has a load calculation sheet: http://www.finehomebuilding.com/pdf/Service_Feeder_Calculations.pdf

 

[bczygan]

I'm clueless on how to post it without hosting to a website. If you can do it, hell I'll send you one for both single and three phase.

And no problem OP, I hope it helps. As far as cost associated, I'm in complete agreement with the other guy. Overhead takes money to cover it, I was a commercial/industrial electrical contractor for 20 years. Its a legitimate expense as the liability cost for residential work is double that of the strictly commercial side. Primary reason is its the most litigated sector in construction. Every year at renewal time after my audits were completed I was required to sign a affidavit stating we did not touch any resi projects (simply put). It always cracked me up that I could do work in facilities that had millions upon millions if dollars in exposure, but gawd forbid I hang a ceiling fan in a house.

Send me one of each.

 

[mdd1986]

Send me one of each.

I think you just need a spread sheet totaling your loads. Often times the utility company will require a load letter to be filed to justify the service your asking for.

Typically you would give them a list of the major equipment loads in KW as well as a watts per square foot total foe the building or structure. This is nothing more than a basic spread sheet with the loads listed. That is how i do it on many projects when dealing with coned.

I have a really cool spread sheet that will calculate everything from voltage drop to short circuit current as well as size your feeders and conduit for you. Might be more than you need here but if someone wants it just pm me.

 

[bczygan]

I want it!

 

[iBuckethed]

I'm clueless on how to post it without hosting to a website. If you can do it, hell I'll send you one for both single and three phase.

And no problem OP, I hope it helps. As far as cost associated, I'm in complete agreement with the other guy. Overhead takes money to cover it, I was a commercial/industrial electrical contractor for 20 years. Its a legitimate expense as the liability cost for residential work is double that of the strictly commercial side. Primary reason is its the most litigated sector in construction. Every year at renewal time after my audits were completed I was required to sign a affidavit stating we did not touch any resi projects (simply put). It always cracked me up that I could do work in facilities that had millions upon millions if dollars in exposure, but gawd forbid I hang a ceiling fan in a house.

Zip the excel file. You can upload zip files and attach to posts just like images, etc.

Or just email it to me and I'll do it for you. I'll PM you my email address momentarily.

iB

 

[LXCam]

That's beyond me ib. When I get back in my office I will get it off to you. Of all things today, we had abrand new 4000amp main smoke test on this project I'm running. Just waiting on the utility company to show up and shut down the service.

 

[iBuckethed]

ALL,

The attachment is LXCam's file that he mentioned earlier in this thread.

It is NOT mine. I am just attaching it to this thread as a courtesy. I take no credit for the document.

It's a standard zip file.

1. Download the zip folder that is attached to this post.
2. Unzip, or simply double click the zip folder you just downloaded and access the excel document.
3. Once you open the excel document, save it to wherever you want it on your computer.

iB

 

[LXCam]

Thanks....maybe

Hey guys there's some description that must accompany that. Ain't no way I can do that off my phone. Both the op and ib have that language in the email. Either one are welcome to post it though or I'll do it at some point. Heading back to work right to resolve or maybe I should say patch back up yesterdays disaster.