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:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Forum Software Upgrade coming soon...
by Webmaster
9 minutes 34 seconds ago
Faricating Guards out if Lexan?
by frank
Today at 04:33 PM
Would ELV branch circuits be a good idea?
by LongRunner
Today at 07:42 AM
100% breakers?
by Texas_Ranger
Today at 06:13 AM
Dangerous DIY Advice
by Potseal
01/12/17 09:52 AM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
HotLine1 15
gfretwell 11
Webmaster 11
ghost307 10
Trumpy 9
Who's Online
2 registered (sparkyinak, Webmaster), 108 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#163658 - 05/13/07 08:08 PM What constitutes as working live at 600 volts
frank Offline
Member

Registered: 05/29/01
Posts: 370
Loc: windsor ontario canada
If your working on a combination motor starter that has the exposed disco open is it considered live work?
IS live testing concentered working live work?
Is working on or around cycling equipment considered live work?
What is considered a high energy circuit?
I guess im trying to find out when PPE becomes necessary and law in ontario.Any links you may have would be greatly appreciated.Seems everyone has differing opinions.
thanks

Top
2017 / 2014 NEC & Related Books and Study Guides
#163705 - 05/15/07 08:48 AM Re: What constitutes as working live at 600 volts [Re: frank]
mikesh Offline
Member

Registered: 06/07/06
Posts: 614
Loc: Victoria, BC, Canada
In the case of the 600 volt combination starter disconnect I am of the opinion that if any wire in there is live then it is live work according to the definition. The hazard is low if the incomming lines are not exposed and you are not punching a hole in the case above those terminals. Make it even safer and open the overcurrent device ahead of the starter and tag it.
Live testing is live work and requires a hot permit.
Cycling equipment is live work and damn dangerous if anything is done in the area of mechanical movement.
Any work done under these circumstances needs justification and safety procedures need to be considered and implemented. Changing a Fuse can be dangerous if not treated respectfully. I do know of one HV installation where the line was terminated on the load contacts. Fortuneately the electrician called to change the fuse balked at stiking his hands in this switch until he got a HV meter and was darn happy he did. Yes there was hell to pay on that one but no one got hurt this time. This might be one of those rare cases where an electricians uncertainty lead to the right decision.

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