temp wiring?

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electricaldoc

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AT my work place we will run wiring to j box in celling, and then us an so cord to drop out of jbox down to equipment. We do this almost every where do to the fact most equipment moves a lot.
Know from what I read this would be tempory wiring unless we use cord and plug connectition on both ends. Am I reading this correctly?

400.7 Uses Permitted.
(A) Uses. Flexible cords and cables shall be used only for the following:
(1) Pendants
(2) Wiring of luminaires (fixtures)
(3) Connection of portable lamps, portable and mobile signs, or appliances
(4) Elevator cables
(5) Wiring of cranes and hoists
(6) Connection of utilization equipment to facilitate frequent interchange
(7) Prevention of the transmission of noise or vibration
(8) Appliances where the fastening means and mechanical connections are specifically designed to permit ready removal for maintenance and repair, and the appliance is intended or identified for flexible cord connection
(9) Data processing cables as permitted by 645.5
(10) Connection of moving parts
(11) Temporary wiring as permitted in 527.4(B) and 527.4(C)

(B) Attachment Plugs. Where used as permitted in 400.7(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet.
Exception: As permitted in 368.8.

Does this mean we would have to have a receptical in j box?
Becouse we never do it is hard wired at jbox with plub at end.
 
Re: temp wiring?

nothing says you can't put the outlet on the end of the cord. you really need to be able to unplug stuff thats not permanent.

[ November 27, 2004, 11:48 AM: Message edited by: petersonra ]
 
Re: temp wiring?

Will you comply with
400.7(B) Attachment Plugs. Where used as permitted in 400.7(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet.
Click to expand...
? :confused:

I don't think this qualifies as "temp wiring".

ARTICLE 527 Temporary Installations
527.1 Scope.
The provisions of this article apply to temporary electrical power and lighting installations.
527.2 All Wiring Installations.
(A) Other Articles. Except as specifically modified in this article, all other requirements of this Code for permanent wiring shall apply to temporary wiring installations.
(B) Approval. Temporary wiring methods shall be acceptable only if approved based on the conditions of use and any special requirements of the temporary installation.
Click to expand...

[ November 27, 2004, 12:04 PM: Message edited by: websparky ]
 
Re: temp wiring?

Doesn't 407(B) meen you would have to have a recepticle at electrical out let, and flexable cord have plug to plug it to it. If it doesn't meat this requirement then wouldn't be temp wiring automaticaly?
 
Re: temp wiring?

It seems as though you are saying: If a wiring method doesn't comply with a code article then, it must fall under "temporary wiring".

Sorry, I do not buy that logic!

527.3 Time Constraints.
(A) During the Period of Construction. Temporary electrical power and lighting installations shall be permitted during the period of construction, remodeling, maintenance, repair, or demolition of buildings, structures, equipment, or similar activities.
(B) 90 Days. Temporary electrical power and lighting installations shall be permitted for a period not to exceed 90 days for holiday decorative lighting and similar purposes.
Click to expand...
Also, would your machines qualify under this:
(8) Appliances where the fastening means and mechanical connections are specifically designed to permit ready removal for maintenance and repair, and the appliance is intended or identified for flexible cord connection
Click to expand...
 
Re: temp wiring?

Hey guys go to any MC DONALDS HAMBURGER JOINT that is the way they wire up there microwaves their mixing machines and every other appliance they posses except for the deep french fryers. Teir blueprints call for color coded female sockets to be 5 foot in length and only male plugs color coded the same color can be attached to them period
1 Billon and still cooking
Happy Holidays. :p
 
Re: temp wiring?

Straps apparently we are lucky to have you around, you have all the answers without looking anything up. :D

At Micky D's they have plugs on the cords, the opening post was taking about hardwiring the cords at both ends.
 
Re: temp wiring?

No Straps has it correct what we have is an so cord dropped out of an jbox down 25ft with a plug one one?side to plug our machines into. Also I am not saying it should qualify for temp, but rather asking is it temp which needs to come down in less than 90 days or just totally illegal?
 
Re: temp wiring?

Originally posted by electricaldoc:
No Straps has it correct what we have is an so cord dropped out of an jbox down 25ft with a plug one one?side to plug our machines into.
Click to expand...
That being the case I apologize for my smart a#@ response to Straps :eek:

Also I would say the only one that can answer your question is the local AHJ.

McDonald's installation is allowed by 400.7(A)(8)

400.7 Uses Permitted.
(A) Uses. Flexible cords and cables shall be used only for the following:

(8)Appliances where the fastening means and mechanical connections are specifically designed to permit ready removal for maintenance and repair, and the appliance is intended or identified for flexible cord connection
Click to expand...
The reason they use the cord connections is so to facilitate easy cleaning.

You installation may be covered by 400.7(A)(6).

400.7 Uses Permitted.
(A) Uses. Flexible cords and cables shall be used only for the following:

(6)Connection of utilization equipment to facilitate frequent interchange
Click to expand...
Bob
 
Re: temp wiring?

I understand they can be used for these reasons, and I am sure that is the reason my company will give.
The thing I wonder is by

(B) Attachment Plugs. Where used as permitted in 400.7(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet.

Than the cord should be energized from a receptacle. Not just a j box with hard wired cord? Is that correct do we need a receptacle in j box to make it legal?


Electrical doc
The more I study the less I feel I know.
 
Re: temp wiring?

Would you feel better about the way it looks if you installed an outlet on your j-box, and put an in-use cover on it, and used a regular extension cord? The in-use cover would provide a sort of strain relief.

I agree that if your current setup has strain relief, it should be kosher. At the newspaper I used to work at, the stacker's male cord end was actually recessed into the body of the machine, and the female "outlet" was in essence a 208(?) NEMA female cord end installed on SO in a j-box at the end of the conveyor. We had bi-annual fire marshall inspections (because of newsprint paper dust) and they inspected various electrical items too. Not exactly an electrical inspector, but they might have been.

Point: Factory installed recessed male end. No way that machine would have passed UL without the knowledge that it would be hooked to a permanent extension cord.

My $.02
--George
 
Re: temp wiring?

Originally posted by electricaldoc:

(B) Attachment Plugs. Where used as permitted in 400.7(A)(3), (A)(6), and (A)(8), each flexible cord shall be equipped with an attachment plug and shall be energized from a receptacle outlet.

Than the cord should be energized from a receptacle. Not just a j box with hard wired cord? Is that correct do we need a receptacle in j box to make it legal?
Click to expand...
Are they talking about the cord on the equipment, or the cord that's dropping from the ceiling? I'm reading it as they're talking about the cord that's hooked to the equipment is supposed to be powered from a receptacle, which includes a female cord cap, and not hardwired.

Just my 2? worth.
 
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