ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
sec cable code conflict
by HotLine1. 11/19/18 02:34 PM
This anti-theist is priceless!!!
by Texas_Ranger. 11/17/18 02:15 PM
High current GFI vs regular GFCI
by Texas_Ranger. 11/17/18 02:07 PM
Single phase and what you call it.
by dsk. 11/12/18 11:10 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 8 guests, and 26 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
small conveyor start/stop #196459
10/05/10 02:06 PM
10/05/10 02:06 PM
K
kytsurfer  Offline OP
New Member
Joined: Oct 2010
Posts: 1
canada
Just wondering, We are building a small bench top system with a basic start stop conveyor (maybe 2 ft long and only a few inches high).
I had spec'd out a stop start button and relay but our engineer would rather just use a selector switch (motor has its own built in over loads and everything- just requires 120V)
Is this okay to do and do i need to have an e-stop on the system?

Thanks

Tools for Electricians:
Re: small conveyor start/stop [Re: kytsurfer] #196465
10/06/10 12:49 PM
10/06/10 12:49 PM
L
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
DISCLAIMER: I am not in Canada. Nor am I a licensed Electrician.

It is my understanding that if there is potential to cause physical harm, then you need an E-Stop. Can this conveyor damage a finger if it gets caught in the conveyor? Is this in a Commercial or Industrial environment? Does it need safety guards? Is it interlocked with another piece of equipment?

If any of those questions are answered with a yes, I would suspect that the relay with Start/Stop and E-Stop switches is probably a good idea.

Re: small conveyor start/stop [Re: LarryC] #196678
10/21/10 12:38 PM
10/21/10 12:38 PM
M
mikesh  Offline
Member
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
If the condition larry describes are true than 3 wire low voltage release (protection) is required. Ie if in a power failure the motor will not restart without someone pushing a start button. This is a common protection scheme for saws and planers.

Answer the workman's compensation question first. It can save your home and assets.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Attic Rat
Attic Rat
Bergen Co.,N.J. USA
Posts: 524
Joined: December 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 7
Popular Topics(Views)
251,613 Are you busy
188,748 Re: Forum
178,459 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.019s Queries: 15 (0.004s) Memory: 0.9515 MB (Peak: 1.0781 MB) Zlib enabled. Server Time: 2018-11-19 19:52:33 UTC