ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

>> Home   >> Electrical-Photos   >> Classifieds   >> Subscribe to Newsletter   >> Store  
 

Photos of the Week:

Meter vs Bricklayer
Meter vs Bricklayer

Random Gallery Image:
Recent Gallery Topics:
What in Tarnation?
What in Tarnation?
by timmp, September 10
Plumber meets Electrician
Plumber meets Electrician
by timmp, September 10
Who's Online Now
0 members (), 114 guests, and 17 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#197838 12/23/10 01:01 AM
Joined: Jul 2002
Posts: 241
S
SJT Offline OP
Member
Good Holidays to all,
There are metal halide open glass type hanging fixtures. The contractor wired them with rubber cord, outlet above fixture, and they are 480V. Are the fixtures allowed to be fed with rubber cord? I thought the flexible cord would need to be rated at 90C? I don't like the idea of 480V for a plug in style High Bay fixture. There were some fixtures that had the receptacle 2 feet away. We turned that down and said the outlet has to be directly above the fixture.
Thoughts on 90C rubber cord?
Thanks

Horizontal Ad
Joined: Jun 2004
Posts: 1,273
T
Member
I'm confused by your original post.

Are you an electrical inspector?


Tesla
Joined: Jul 2002
Posts: 8,441
Likes: 4
Member
I don't have a problem with it, myself.
90C = 194F.
Rubber insulated cables tend to be treated like a poor cousin to PVC these days, however rubber was used prolifically before PVC hit the mainstream.

Slightly off-topic, rubber cables have good resistance to oil and other petroleum products, where as PVC has very little.

What sort of installation is this?
Is it a warehouse or something like that?

Joined: Jan 2005
Posts: 5,476
Likes: 3
Cat Servant
Member
It's a common, and IMO, preferred way to do it. In deed, using the cord/plug/receptacle costs a fair bit more than directly mounting the fizture to a box.

I prefer this method as it is a much easier, safer way to repair a fixture with a bad ballast. No need to kill the entire circuit; unplug it and take it down to the floor- where you can work o n it in comfort.

Joined: Apr 2002
Posts: 7,413
Likes: 8
Member
SJT:

In addition to Renos views above (which I agree), the following info was not addressed:

Is the cord/plug assembly on the fixture a 'factory install' or 'factory option' ?
If the answer is yes, then there is no NEC Issues, other than the 2' seperation you mentioned.

If it's not a 'factory' item, then:

What type of 'cord'?
Voltage rating of the cord cap and receptacle?

Off the electrical spectrum, this type install allows some tenants to remove the lighting they installed when they vacate. Remember the NEC 'lighting outlet' definition, as those outlets in that hi-bay warehouse are all that are NEC required.



John
Joined: Jul 2002
Posts: 241
S
SJT Offline OP
Member
Telsa,
I work full time as a Planner/Estimator for a Research Facility. I do not have the tools on at this job. One of my duties is that I look at jobs that are on-going with an Electrical committee, to make sure things are being done to code.
I also have a Part-time business, mainly residential work.

Joined: Mar 2004
Posts: 947
T
twh Offline
Member
Everything is legal except that which is prohibited.

Is there a 2 foot rule in your code or the contract? If not, the problem belongs to someone other than the installer.

I really like a 480 volt plug-in fixture, and the plug is better accessed if it isn't directly above the fixture. When I see a fixture hard-wired, I know the only consideration was the cost of the installation.

Horizontal Ad
Joined: Dec 2000
Posts: 4,293
Member


Originally Posted by twh
I really like a 480 volt plug-in fixture, and the plug is better accessed if it isn't directly above the fixture.


The NEC requires that electric discharge luminaires be located directly below the outlet or busway per NEC 410.62(C)(1)(1)

(The CEC must have differing rules on this)



Link Copied to Clipboard
Advertisement:-Right


Tools for Electricians
Tools for Electricians
 

Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Top Posters(30 Days)
Admin 3
CSS 1
Popular Topics(Views)
366,399 Are you busy
289,393 Re: Forum
268,041 Need opinion
New Page 2
Powered by UBB.threads™ PHP Forum Software 7.7.5