ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Admin 4
Recent Posts
1913 American Electrician's Handbook
by annemarie1. 07/27/17 03:10 PM
600 KW 120/208 3 Phase Y protection
by Yooperup. 07/24/17 12:20 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
Housebilding DIY wiring
Popular Topics(Views)
239,368 Are you busy
174,823 Re: Forum
167,214 Need opinion
Who's Online Now
0 registered members (), 55 guests, and 4 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#84088 - 03/09/03 05:57 PM load calculations  
elecbob  Offline
Member
Joined: Aug 2002
Posts: 141
WA
I did some load calcs for a residential triplex. Each unit totalled 50 amps. The house load was 55 amps. The service load totalled 174 amps. The building is in an undergrounded area and the only service voltage available is 480 volts, single phase. I want to install:
A 100 amp 480 volt safety switch.
A 50 KVA transformer to supply the 120/240 volts.
A meter pack rated at 200 amps.
4 - 60 amp panels.
Think it will fly?
Thanks Bob


2017 / 2014 NEC & Related Books and Study Guides

#84089 - 03/09/03 08:34 PM Re: load calculations  
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
Bob, Are you saying that the utility will not supply you with a 120/240 volt service?

The only way I can imagine a utility accepting an installation as you described is to install a 480 volt meter before the disconnect and transformer then have 4 customer read meters on the secondary side of the transformer. How would the utility control future un-metered loads being connected to the disconnect or transformer?

Curt


Curt Swartz

#84090 - 03/09/03 11:15 PM Re: load calculations  
elecbob  Offline
Member
Joined: Aug 2002
Posts: 141
WA
I erred on this one. The utility wants to install a pad mounted transformer on a 48" by 56" pad in the back yard. Not good. My option is to install a meter ahead of my own transformer in the basement. I couldn't seperately meter the units but the heat and hot water are central so it shouldn't be a big deal. Not the best solution but cheaper and more doable.
bob
[This message has been edited by elecbob (edited 03-09-2003).]

[This message has been edited by elecbob (edited 03-10-2003).]



Member Spotlight
sparky66wv
sparky66wv
West Virginia
Posts: 2,236
Joined: November 2000
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.002s) Memory: 0.7516 MB (Peak: 0.8773 MB) Zlib enabled. Server Time: 2017-07-28 04:42:25 UTC