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Neon Lighting Help #23922
03/31/03 07:49 AM
03/31/03 07:49 AM
I
iwire  Offline OP
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
I have just been told I am to go to a department store to remove some of the neon lighting from the walls.

I am also told I will have to refeed the neon that is staying on the walls.

I have never worked on Neon and have not been impressed with many of the installations I have seen.

Can anyone give me a run down of splices (if they are allowed) what kind of cable do I ask for if I need more, are the transformers matched to the length of the tubes like fluorescents.

This work has been assigned to me and I would like to do a quality and safe job.

Any info would be appreciated, and I will be posting this in another forum to get as much help as possible.

Thanks, Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Work Gear for Electricians and the Trades
Re: Neon Lighting Help #23923
03/31/03 12:19 PM
03/31/03 12:19 PM
L
lighthouse  Offline
Member
Joined: Jan 2003
Posts: 134
philadelphia pa 19125

Re: Neon Lighting Help #23924
04/01/03 12:56 AM
04/01/03 12:56 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Iwire,
Just a friendly warning,
If you don't already know this,Neon or Cold Cathode Lighting uses VERY HIGH VOLTAGES!!.
Depending on the size of the sign(s), this voltage can vary from 5kV, up to 50kV+.
The secondary side of the supply transformer
(Step-up), needs to have special silicone HV wire used, this is heavily insulated and I would not recommend the use of any splices
on this side of the transformer.
Be very careful around this sort of equipment and make sure that you lock out all of the energy sources relating to the sign circuit(s), there have been some really nasty accidents over the years, with CC lighting systems, don't end up being a statistic!. [Linked Image]

Re: Neon Lighting Help #23925
04/01/03 03:13 AM
04/01/03 03:13 AM
I
iwire  Offline OP
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Trumpy, thank you I would prefer to see my kids grow up. [Linked Image]

lighthouse, the link for "sign web" was just the info I needed along with article 600.

I just got back from the first night of working on this, the original installation was very professional all the GTO cord was in 1/2" flex to the last point possible. The transformers where 277/7500 volt. Mostly removal had to refeed one "tube" but that was no problem.

Thanks for the help (and warning) that's why I asked questions here you can always get some help.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Neon Lighting Help #23926
04/01/03 05:54 AM
04/01/03 05:54 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,231
SI,New Zealand
Iwire,
I can tell you one thing mate, it doesn't pay to drop neon signs either!.
A few years ago, 4 workmates and I dropped a large (6metres long,18 feet) sign, when two of the guys lifting it slipped over.
It fell down over the frontage of a shop and flattened a guys station-wagon, luckily no-one was in it,at the time.
And then the guy came back to his car and saw this Chinese Restaurant sign laying all over it.
My ears are still ringing from the reprimand
over that one, from the same guy that told us that a crane was too expensive!. [Linked Image]

Re: Neon Lighting Help #23927
04/01/03 03:38 PM
04/01/03 03:38 PM
P
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
I don't know how it's done in the States, but here in Britain the xfmr for neon lighting generally has a ground connection on a center=tap of the secondary, so that on e.g. a 5kV supply each leg would be 2500V to ground.

Still not something to treat with anything but the utmost respect! [Linked Image]

Re: Neon Lighting Help #23928
04/02/03 07:04 PM
04/02/03 07:04 PM
I
iwire  Offline OP
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
The job is finished now and it went well. Thanks, again for the help

The Transformers where 277 volt primary with some 5000 and some 7500 volt secondarys and as Pauluk said all where center tap grounded.


Bob Badger
Construction & Maintenance Electrician
Massachusetts

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