ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Changing a Bulb
by gfretwell. 07/14/18 03:12 PM
Tray cable?
by gfretwell. 07/11/18 10:18 PM
Eaton Heavy Duty 30A and 60A Safety Switches
by Admin. 07/11/18 09:49 PM
ORTOVOX Recalls Avalanche Transceivers
by Admin. 07/11/18 09:44 PM
Tingle off the water spigot
by gfretwell. 07/08/18 12:58 PM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 28 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Led flourescent bulbs #215103
03/04/15 12:47 AM
03/04/15 12:47 AM
P
ppb  Offline OP
New Member
Joined: Mar 2015
Posts: 3
florida
Changed out a bunch of four foot flourescents to the led type that requires no ballast. The ballast is internal in the bulb so all you have to do is wire it straight to the 120-277 volt coming into the fixture. Any downfalls to these other than the price I'm not aware of yet. One manufacter is 10 year warranty.

Work Gear for Electricians and the Trades
Re: Led flourescent bulbs [Re: ppb] #215104
03/04/15 01:56 AM
03/04/15 01:56 AM
S
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,334
Alaska
I can not specifically say what's good or bad but there's good and garbage out there. I'm trying to put something together here and out it on the forum to help sort through the mired of the good versus the bad. Don't buy in to the sales pitch or the pretty packaging. At least go with a reputable manufacturer. What good is a 10 year bulb if everything goes gray under the light after 5000 hours. The manufacturer of this 10 year bulb, will they be around the next 10 years to pay a claim?

I have great resource that will help us all to muck through. DOE has a great data base where manufacturer can register their wares and must meet certain criterias. Go to www.lightingfacts.com and poke around. It's a little clunky and the search engine is temperamental. Just because the an LED light or bulb is not listed does not mean it is a bad bulb. It does mean you have your homework cut out for you.

I've attended a conference on LED a couple years ago and there is a lot of great things coming. I highly recommend to start agressively educating yourselves on LED lighting and even lighting design. The rules of thumb for lighting design do not apply to LED. They don't even apply from one LED another. Fundamental lighting design is crucial to LED lighting.

Last edited by sparkyinak; 03/04/15 01:58 AM.

"Live Awesome!" - Kevin Carosa
Re: Led flourescent bulbs [Re: ppb] #215106
03/04/15 04:05 PM
03/04/15 04:05 PM
S
sedesigner1  Offline
Member
Joined: Apr 2013
Posts: 22
NJ
I know utilities are using them for substation control house lighting, and even the indicating lights on control racks are being changed to LED. Also, it seems a minor thing, but it wasn't that long ago when we had to carry those big clunky spotlights into poorly lit spaces. Now I carry an LED spotlight that fits in my pocket. Think of all the advances in lighting design over the last decade, it's almost impossible to keep up.

Re: Led flourescent bulbs [Re: ppb] #215108
03/04/15 05:14 PM
03/04/15 05:14 PM
G
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 189
UK
I've seen quite a few LED tubes in commercial installations here so someone must believe in the viability.
A "downside" I can see in retrofit situations is if a non-technical user attempts subsequent maintenance using a conventional tube. Stupid? Yes, but I've met a lot of people who think that if any lamp physically fits it must be OK. I do believe that retro-fits should be clearly labelled, "Caution LED tubes only".
Since moving house 18 months ago I have equipped with almost entirely LED lamps in a range of styles, though not tubes. The biggest difficulty I found was judging the wattage needed for subjective comfort levels. I guess this was done from experience with incandescents, so will come with experience. Afterthought: With an estimated 40+ lamps I've only had one premature failure, and that was very early.

Last edited by geoff in UK; 03/04/15 05:17 PM.
Re: Led flourescent bulbs [Re: ppb] #215114
03/05/15 01:08 AM
03/05/15 01:08 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,985
Brick, NJ USA
Apopular retrofit is the LED 'light stix' that all the convenience stores are putting in the refrig cases. Both the chains (7-11, etc) and the locals are doing it.

LED 2x2 lay-ins do a very nice job, and LED site lights are in the parking lot and perimeter lighting.


John
Re: Led flourescent bulbs [Re: ppb] #215117
03/05/15 10:11 AM
03/05/15 10:11 AM
T
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,426
Vienna, Austria
What would happen if someone did replace an LED tube with a regular fluorescent? I recently discussed that with some Germans and our verdict was it simply wouldn't work but without any dangerous consequences. Without a ballast the tube should simply be an open circuit since the supply voltage isn't high enough to start the lamp.

Re: Led flourescent bulbs [Re: ppb] #215118
03/05/15 10:32 AM
03/05/15 10:32 AM
G
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 189
UK
"What would happen?" On a good day, nothing as you say.
However, it takes little to strike a tube. In dry conditions the static generated by lightly brushing the tube can do it. You can start a fitting with failed starter that way. Also a transient on the supply could easily exceed strike voltage.
If a tube strikes with no ballast it is virtually a short so the breaker trips. I imagine the glass could shatter though I've never seen that. The energy dispersed will be a function of the breaker characteristics.

Re: Led flourescent bulbs [Re: ppb] #215130
03/07/15 12:53 PM
03/07/15 12:53 PM
S
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,334
Alaska
The key with LED is do your homework. LED' inherently put our a high, UV and low red spectrum. You can have a LED bulb with a CRI 80 but anything red under it is gray or black. The LED's can be doped to fix that however that coating will be bombard by the UV so then it will come done to the quality of the doping. Rules of thumb for lighting do not apply to LED lighting. Rules of thumb from one LED light does not necessary apply to another LED.

Retrofitting of existing lights can be trickier. LED' can operate at varying temperatures however They are not tested in every type of light fixture out there so they are listed as "Classified", not "listed". It means it's listed per say providing you install and use it within the designed parameters however they do not know how it will work in your setup and if it fails, it's on you, not them, thank you for your business...

Do the research, use reputable brands, don't buy the sales pitch, don't buy the box, buy what's inside the box. When retro fitting, do a few and wait. SE how they perform. When buying LED's for a larger area. Buy at least enough to finish an entire area or room, don't stop in the middles. Get educated on LED and lighting design.


"Live Awesome!" - Kevin Carosa
Re: Led flourescent bulbs [Re: ppb] #215131
03/07/15 03:13 PM
03/07/15 03:13 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,985
Brick, NJ USA
sparkyinak:

On a personal note....have you seen/know of a LED replacement 'A' bulb, to replace incandescent 'bug bulbs' in an outdoor wall lantern type fixture??



Last edited by HotLine1; 03/07/15 03:14 PM.

John
Re: Led flourescent bulbs [Re: ppb] #215132
03/07/15 06:05 PM
03/07/15 06:05 PM
T
twh  Offline
Member
Joined: Mar 2004
Posts: 946
Regina, Sask.
I wonder what will happen when an old fluorescent socket breaks when the power is 120 volts with 15 amp over-current protection. Maybe we should turn the power off to insert or remove lamps.

Page 1 of 2 1 2

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
lil suzi
lil suzi
Midwest
Posts: 57
Joined: August 2003
Show All Member Profiles 
Top Posters(30 Days)
Admin 5
Popular Topics(Views)
248,139 Are you busy
185,591 Re: Forum
174,935 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.036s Queries: 16 (0.005s) Memory: 1.0281 MB (Peak: 1.2102 MB) Zlib enabled. Server Time: 2018-07-20 06:56:55 UTC