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#187610 07/03/09 06:18 PM
Joined: Jan 2004
Posts: 1,507
G
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I am looking for information on LED sign technology and construction techniques. The purpose is to put together an instructional program for sign training.


George Little
Joined: Jan 2005
Posts: 5,349
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Cat Servant
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The 2008 NEC calls for sign shops to be UL listed shops.

A lot of the things you need to know about spacing, etc., is contained in the appropriate UL standard.

Joined: Apr 2002
Posts: 7,313
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George:

1st lesson to sign installers:
Hire a qualified electrical contractor.
Do not use 'zip cord' to wire the individual letters/arrays.
They must have UL for the complete sign assembly.



John
Joined: May 2007
Posts: 169
C
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Quote
They must have UL for the complete sign assembly.



Hahahahahahahah!!!....uhhhhhhh....Hahahahahahahah!!!

Like that's going to happen. These guys build these on the fly.

Last edited by ChicoC10; 07/13/09 10:20 PM.
Joined: Apr 2002
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That's the perfect world scenario!

Unfortunatley, in our real world....


John
Joined: May 2005
Posts: 984
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UL Listed????
HA!!!!

I got the cut sheets on an building's outdoor sign near Chicago and each letter was individually lit and had an SO cord on it.
The sheet called for the Contractor to drill a hole in the outside wall behind each letter for the cord to go through and mount a receptacle for each cord above the drywall ceiling.
Does ANY of this sound Kosher?
But does it sound unsettlingly familiar?


Ghost307
Joined: Apr 2002
Posts: 7,313
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Ghost:

"Does ANY of this sound Kosher?
But does it sound unsettlingly familiar?"

No it is not 'kosher'!
Yes, it sounds all to familiar


John

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