ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Where is Everyone?
by luckyshadow - 11/21/21 10:14 AM
It's been an interesting career
by The Watt Doctor - 11/19/21 09:56 AM
Well I am back to stay (nearly 6 years)
by The Watt Doctor - 11/19/21 09:17 AM
Motor Load Relationships Between Fans and Pumps
by The Watt Doctor - 11/18/21 09:24 AM
GFCI's pops in large numbers
by dsk - 11/05/21 06:45 AM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
1 members (Scott35), 38 guests, and 22 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Mar 2006
Posts: 81
B
bigpapa Offline OP
Member
Can I use a set of dry contacts in a 600V machine to control a 208V fan starter fed from a 120/208V panel.

Joined: May 2001
Posts: 376
F
Member
If one machine is going to control another machine you have to do it in the control panels.
If you mean an aux contact on the 600V machine starter.The starter would then be fed from two sources and have to be labeled as such.You could also do it with an 8 pin relay.
It seems that when a panel/tub is fed from two sources inspection wants any circuit that cant be turned off at that panel to be extra-low voltage.
This is how JOHNSON CONTROLS and TRANE wire METASYS and TRACER SUMMIT for building automation.An aux contact could utilize the starters own control circuit to control the relay provided its 120v.This way the entire starter assembly will still denergize with the disconnect should someone have to pull it apart for maintenance plus keeps everything as physically seperate as possible.Need more information.




[This message has been edited by frank (edited 01-23-2007).]


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

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

 

Member Spotlight
watersparkfalls
watersparkfalls
Washington...Not DC
Posts: 240
Joined: March 2005
Top Posters(30 Days)
Trumpy 5
Admin 3
Popular Topics(Views)
286,165 Are you busy
218,600 Re: Forum
204,812 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5