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 Items:

Switch Bit - Interchangeable Flex Bit System
>> Switch Bit -
Interchangeable Flex Bit System

>> 2014 NEC and Related

Recent Posts
1935 film about giant Chevrolet sign in Chicago
by gfretwell
10/25/14 10:49 AM
Someone's Awake at Milwaukee
by Tesla
10/24/14 08:29 PM
Do I need a disconnect?
by Tesla
10/24/14 03:28 PM
3-way photosensor switch control
by JoeTestingEngr
10/22/14 04:56 PM
Inverter/Charger advice
by LarryC
10/21/14 06:44 PM
New in the Gallery:
Drunks and a transformer, what could go wrong?
Shout Box

Top Posters (30 Days)
gfretwell 37
HotLine1 18
Tesla 11
wewire2 10
renosteinke 7
Who's Online
2 registered (mbhydro, Albert), 153 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#87343 - 02/16/04 11:35 AM mtr amps 4160 volts
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 807
Loc: Michigan
Where do I find a Chart giving full load amps for 4160 volt mtrs. from say 100hp to 1000 hp???

Top
2014 / 2011 NEC & Related Books and Study Guides
#87344 - 02/16/04 02:30 PM Re: mtr amps 4160 volts
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
For 4000V motors [usual nameplate for motors used in 4160V systems] you could use 58% of the 2300V column currents in NEC Table 430-150 3ø Motor Full-Load Current (60-500hp.) Or, using the kVA/hp equivalent, a 100hp 4kV motor would be about 14½ amps and a 1,000hp motor would be ~144 amps.

Top
#87345 - 02/17/04 11:42 AM Re: mtr amps 4160 volts
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 807
Loc: Michigan
I've always used .14 times Hp. But wondered if theres a chart I could get awhole of.

Top
#87346 - 02/17/04 03:59 PM Re: mtr amps 4160 volts
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Manufacturer-specific info at www.baldor.com/pdf/brochures/BR435.pdf

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