The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 15
HotLine1 10
Trumpy 8
Texas_Ranger 8
sparkyinak 7
Who's Online
1 registered (sparkyinak), 237 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#34987 - 03/01/04 01:11 PM Size of a main breaker/disconnect.
Edward Offline
Member

Registered: 12/14/02
Posts: 309
Loc: California
I have to bid on a complete rewire and services and subpanel upgrades for two complexes. One is a 3 single unit complex and other is a 4 single unit complex. Each individual unit is about 800sqft.
My questios is can i treat this as one main 200Amp disconnect with 3 or 4 60 amp individual mains?
If not can i use the standard load calculation for each unit and add it all up to see what my main will be?

PS. It is all gas heater and cooking appliance. One laundry unit for both buildings.

Merci
Edward
_________________________
Thanks
Edward

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#34988 - 03/01/04 01:24 PM Re: Size of a main breaker/disconnect.
earlydean Offline
Member

Registered: 12/22/03
Posts: 749
Loc: Griswold, CT, USA
You have to do both.
Each individual unit must have it's feeder calculated, and the building must have it's size calculated for the entire building loads.

Earl
_________________________
Earl

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals