480V on push button controls.

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Re: 480V on push button controls.

electure #189296 09/30/09 05:22 AM

Joined: Jun 2004

Posts: 1,273

Sacramento, CA

T

Tesla

Member

208V / 480 V systems stink...

Too many problems with back-EMF in motor controls.

Give me 120V, 24V, 277V any day.

Back-EMF results in contactor chatter and other problems.

Ungrounded control circuits are a HEADACHE.

Tesla

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Entire Thread
Subject	Posted By	Posted
480V on push button controls.	gscott	09/08/09 03:24 PM
Re: 480V on push button controls.	gfretwell	09/08/09 06:10 PM
Re: 480V on push button controls.	gscott	09/08/09 09:28 PM
Re: 480V on push button controls.	gfretwell	09/08/09 09:59 PM
Re: 480V on push button controls.	Yoopersup	09/09/09 12:16 AM
Re: 480V on push button controls.	gscott	09/09/09 02:02 PM
Re: 480V on push button controls.	gfretwell	09/09/09 05:48 PM
Re: 480V on push button controls.	electure	09/09/09 06:19 PM
Re: 480V on push button controls.	Tesla	09/30/09 09:22 AM
Re: 480V on push button controls.	Trumpy	09/30/09 10:18 PM
Re: 480V on push button controls.	WESTUPLACE	10/01/09 04:51 AM
Re: 480V on push button controls.	gpsparky	10/07/09 12:30 AM
Re: 480V on push button controls.	gpsparky	10/07/09 12:31 AM
Re: 480V on push button controls.	sparkyinak	10/07/09 04:08 AM
Re: 480V on push button controls.	gpsparky	10/07/09 05:34 AM
Re: 480V on push button controls.	gfretwell	10/07/09 08:12 AM
Re: 480V on push button controls.	gpsparky	10/08/09 12:38 AM
Re: 480V on push button controls.	gfretwell	10/08/09 02:57 AM
Re: 480V on push button controls.	JValdes	12/23/09 08:03 PM
Re: 480V on push button controls.	JBD	10/23/09 02:26 AM

Moderated by dougwells, electure, gfretwell, HotLine1, Scott35, Trumpy

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ECN Forum Forums Code Related Discussion NEC & other Code issues 480V on push button controls.