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I have never tried them!
You should ask him for samples and hook them up and test them for yourself! Like you said all salesman tell you what they have is the greatest, if they didn't they wouldn't be a salesman!
My research has showed me that most of these cheaper LED are the ones that...
you need to read this and check with your state on requirements! In PA if you cross state lines and truck and trailer is more than 10,001lbs you need DOT numbers and other things required by CDL required trucks.
When replacing a ballast not of the same manufacturer and same model number, never assume the wiring is the same! The internal circuits may be different and if not wired correctly can not only shorten lamp life but also shorten ballast life from not having them loaded correctly! SO ALWAYS CHECK...
An Allanson 396 and 496 3 lamp wiring is the same, except the 496 does not use the brown wires which need to be capped (Wire nutted separately). What I think the op is saying is that not all ballasts from different manufactures are wired utilizing the same colors for the same number of lamps!
The MUTCD sign making side of the industry is huge market and without having the proper equipment and money for supplies runs the small sign shops out of the competition. They buy the Aluminum by weight (tons) and/or container amounts. Some of these companies also supply the sign distributors...
No! what is called for is you keep your printers in a controlled temperature and environment controlled room, not just an open building! With these variables your profiles will not be consistent.
I have replaced ballasts with the same model of what was in the sign. But after having problems down the road (similar to what you are experiencing) found out that the ballasts must have been replace before by someone that just installed that ballast. No all ballasts wire the same for the same...
Are you sure it is wired correctly for the ballasts? I have repaired signs that others have replace the ballasts with a different one which caused the wiring to incorrect. Do not assume that the ballast you are replacing is the one the sign was built with. Yes I have seen sockets bad without...
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