ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Lock-down Thread
by Bill Addiss - 02/26/21 08:40 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New tool
by SMOKEYBOB - 02/15/21 04:59 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 15 guests, and 18 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Collector Bus sizing Problem #181554 10/15/08 09:54 PM
Joined: Feb 2008
Posts: 12
T
theseus Offline OP
Member
How to size the Collector Bus?
I have 3 1600kw/400V gengerators Synchronized and connected to the Collector Bus.

Tools for Electricians:
Re: Collector Bus sizing Problem [Re: theseus] #181567 10/16/08 10:52 AM
Joined: Jun 2006
Posts: 613
M
mikesh Offline
Member
Ok I'll bite, (1600 X 125%) + 1600 + 1600 = 5200 amps.
28-108 of the Canadian Electrical code for conductor sizing for Motors.

Method 2 take the connected load at 125% and size the bus for that.

I don't know what a collector bus is but i guessed it is the bus after the transfer switches where each generator parallels.

Re: Collector Bus sizing Problem [Re: mikesh] #181585 10/16/08 11:50 PM
Joined: Feb 2008
Posts: 12
T
theseus Offline OP
Member
Yes,Collector bus = paralleling bus.

But,generator is different from motor.

Re: Collector Bus sizing Problem [Re: theseus] #181620 10/20/08 11:46 AM
Joined: Jun 2006
Posts: 613
M
mikesh Offline
Member
Yes a generator and a motor are not the same but the wires are sized the same. At least that is what i derive from section 28 of the CEC %125 of the first (largest) generator and 100% of the next 2. Generators and motors are very similar in terms of what happens inside them whether making or using electricity. Cooling, winding and loading all apply the same. A stator for a motor and a generator look the same from a winders perspective at least from 28 year old memories they do. I have rewound stators for both. The armatures are different as there is excitation and magnetic fields to build.


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
HCE727
HCE727
Delaware County, PA, USA
Posts: 186
Joined: November 2005
Show All Member Profiles 
Top Posters(30 Days)
Admin 3
Popular Topics(Views)
275,423 Are you busy
209,311 Re: Forum
196,600 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3