Search found 345 matches

by Tom
Sat Sep 01, 2018 8:21 pm
Forum: Street Lighting
Topic: LED Streetlighting - Split topic from V-Max Installs in MK
Replies: 9
Views: 100

Re: LED Streetlighting - Split topic from V-Max Installs in MK

I totally agree with the needless waste of perfectly good lanterns. Replacing an old lantern that's done it's time is fair enough but I really don't like seeing lanterns that are barely ten years old being binned off! I'm sure if the industry put their minds to it, we could have some excellent LED r...
by Tom
Sat Sep 01, 2018 4:35 pm
Forum: Street Lighting
Topic: High voltage cable/wire
Replies: 6
Views: 167

Re: High voltage cable/wire

CPC are good but these guys are good on price at the moment;

https://www.tlc-direct.co.uk/Main_Index ... index.html
by Tom
Sat Sep 01, 2018 2:45 pm
Forum: Street Lighting
Topic: High voltage cable/wire
Replies: 6
Views: 167

Re: High voltage cable/wire

Most internal wiring in HID luminaires and lanterns is done with heat resistant singles. Tri-rated switchgear cable would an ideal candidate as its available in several colours and heat resistant to 105C. 0.75mm or 1mm sq. would be suffecient in most circuits.
by Tom
Fri Aug 31, 2018 10:45 am
Forum: Control Gear
Topic: Correct Capacitor List
Replies: 20
Views: 6564

Re: Correct Capacitor List

Re the 35w SOX circuit, I believe the 20uF cap applies to the autoleak transformer ballast which is a magnetic beast and the 6-8uF applies to the modern slim ballast and ignitor setup.
by Tom
Wed Aug 29, 2018 3:10 pm
Forum: Lamps
Topic: An ode to SOX
Replies: 3
Views: 169

Re: An ode to SOX

Haha love this! Good work and a befitting tribute to a SOX that got away!
by Tom
Tue Aug 28, 2018 9:50 pm
Forum: Lamps
Topic: Death of a light bulb
Replies: 3
Views: 63

Re: Death of a light bulb

Sorry to hear of your lamp's demise! I had a Mazda 5ft BC 80w warm white tube that I picked up NOS over 20 years ago that one day decided she wouldn't strike! What seems strange to the outside world is just how attached we become to our beloved lamps! There's a few lamps I'd be devastated to lose...
by Tom
Sun Aug 12, 2018 2:35 pm
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 817

Re: Ballast for 14W t12 tube

Never known it to have much an affect on lifespans. I don't think Thorn would've spec'd it if tube life and performance was compromised. (The gear in the original 15w Viewpoint shaver light is a 20w QuickStart ballast) Can't be any worse than running a 6w T5 or even a 4w on an 8w ballast which again...
by Tom
Sun Aug 12, 2018 11:37 am
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 817

Re: Ballast for 14W t12 tube

For many years it was common practice to run 15w tubes on 20w ballasts here. It's even listed in the old Thorn catalogues and Thorn even marked some ballasts as 15/20w. So there shouldn't be any harm in running the 14w on a 15w ballast. I wonder if the 28w 2D ballast would be good for running a seri...
by Tom
Thu Aug 02, 2018 6:08 pm
Forum: Luminaires
Topic: Help me Identify a Fitting from my Past...
Replies: 2
Views: 357

Re: Help me Identify a Fitting from my Past...

That sounds like a really bizarre sounding fitting Zel! Never seen or heard of such a thing! I did once see something that resembled what may have been a single Coughtrie SFB style 13w bulkhead, but that would've been far too slim to house an 18w SOX! Cool idea tho, a tungsten standby/runup lamp!
by Tom
Wed Jun 20, 2018 4:14 pm
Forum: Control Gear
Topic: Ballast for 14W t12 tube
Replies: 12
Views: 817

Re: Ballast for 14W t12 tube

A 15w ballast is probably your best option TBH. The 14w T12 was originally filament lamp ballasted so may be worth investigating what lamp would be the best match. I've seen 14w T8 aquarium tubes on sale in the past but I'm pretty sure they would be running on 15w gear.
by Tom
Sun Jun 17, 2018 7:42 pm
Forum: Lamps
Topic: The Nernst Lamp
Replies: 3
Views: 675

Re: The Nernst Lamp

What an interesting concept! I believe it was quite short lived and was soon displaced by both incandescent arc and discharge lamps?
by Tom
Mon Jun 11, 2018 10:35 pm
Forum: Lamps
Topic: SON-I Snapstart Lamps - 2 Stage Run-Up?
Replies: 1
Views: 264

SON-I Snapstart Lamps - 2 Stage Run-Up?

This is a SON phenomema I haven't seen in over 30 years but I wonder if anyone has witnessed this too? Back in the mid 80s, my school sports hall was lit with 250w SON-E low-bays with deep polycarbonate bowls. The lamps must have been the internal thermal snapsart type (bimetal strip and heater coil...
by Tom
Fri May 18, 2018 10:48 am
Forum: Street Lighting
Topic: [repost] Amber minor restoration project!!
Replies: 64
Views: 5351

Re: [repost] Amber minor restoration project!!

Great stuff! Looking good. Certainly a timeless classic!
by Tom
Sat Apr 14, 2018 12:25 pm
Forum: Street Lighting
Topic: [repost] Amber minor restoration project!!
Replies: 64
Views: 5351

Re: [repost] Amber minor restoration project!!

This really is shaping up superbly! Regarding internal cabling, Tri Rated Switchgear wire is your best bet, in 0.5mm or 0.75mm. (all sizes available right up to 25mm!) It's heat resisting at 105C and available in several colours, including the aforementioned red and black for old school authenticity...
by Tom
Wed Oct 04, 2017 7:03 pm
Forum: Control Gear
Topic: Correct Capacitor List
Replies: 20
Views: 6564

Re: Correct Capacitor List

I do find it quite interesting the huge contrasts in different capacitor ratings between lamps, even of the same wattage. We have 13-18uf caps for 250w mercury circuits yet the 250w SON needs 30uF! Old catalogues from the 50s, for say, a 4ft 40w switchstart circuit list a 3.25uF cap yet an 18" 15w c...
by Tom
Fri Jul 21, 2017 10:19 am
Forum: Lamps
Topic: Coloured Metal Halide Lamps
Replies: 8
Views: 2172

Re: Coloured Metal Halide Lamps

I know exactly what you mean about installation designs that initially spec'd coloured halides. There's a posh estate agents down my way that had magenta lamps lighting the front of their building that looked funky by night. Now they're just regular lamps! Coloured lamps never seem to get replaced l...
by Tom
Tue Jul 18, 2017 3:45 pm
Forum: Lamps
Topic: Coloured Metal Halide Lamps
Replies: 8
Views: 2172

Re: Coloured Metal Halide Lamps

What I find quite amazing is the fact that coloured metal halide lamps came about as a result of early developments where rapid depreciation of elements such as Lithium, leaving a predominant dose of Thallium or Indium behind, resulting in the distinct green or blue light. I believe GEC were one of ...
by Tom
Wed Apr 26, 2017 12:18 pm
Forum: Lamps
Topic: Short Lived Oven Lamps!
Replies: 1
Views: 883

Short Lived Oven Lamps!

Has anyone else been experiencing premature lamp failures in their ovens at home? I'm referring to the 300c rated 40w E14 G45 jobs. We've had both Polish made Philips and Chinese made Osram pearl variants and never get more than a few months service from them! All the lamps I've seen have the standa...
by Tom
Mon Feb 20, 2017 11:25 pm
Forum: Lamps
Topic: Narva Quits The Fluorescent Market
Replies: 12
Views: 3350

Re: Narva Quits The Fluorescent Market

Heartbreaking stuff. They're trying their best to get fluorescent confided to the history books by the look of things! As far as Chinese lamps go, BELL are the way forward!
by Tom
Tue Feb 14, 2017 9:54 pm
Forum: Lamps
Topic: Narva Quits The Fluorescent Market
Replies: 12
Views: 3350

Re: Narva Quits The Fluorescent Market

Oh man this is NOT good news!! Just when it looked like quality tubes would stick around for a little while yet! Our only hope now is Philips keeping their production coming from Poland but that's not sounding too good either as Philips have been making noises about exiting the fluorescent market fo...
by Tom
Thu Nov 17, 2016 5:29 pm
Forum: Luminaires
Topic: Thorn Popular Pack c1970s
Replies: 20
Views: 7060

Re: Thorn Popular Pack c1970s

Totally agreed! Welcome to ATL Brite Spark! Strange to think we all thought we were alone in this great hobby and interest only we would understand! What's even more strange to think about, is the fact the T12 PP design is approaching fifty years old! It was around 1967-68 I think the first incarnat...
by Tom
Sat Oct 08, 2016 6:30 pm
Forum: Lamps
Topic: Osram 125w HQL Super Deluxe 'Golden Eggs' On Amazon
Replies: 1
Views: 1648

Osram 125w HQL Super Deluxe 'Golden Eggs' On Amazon

As brought to our attention by Andy over on the gallery, a fantastic opportunity to own 125w editions of the famous MBF Super Deluxe lamps with the golden filter coat. The hallowed 'Golden Egg'! 80w and 50w versions also available. Can be found by searching Osram HQL on Amazon. There's even a 250w a...
by Tom
Fri Sep 23, 2016 5:27 pm
Forum: Lamps
Topic: The Philips CorePro LED PLC Lamp
Replies: 5
Views: 2181

Re: The Philips CorePro LED PLC Lamp

It's kind of sad that Philips have designed an LED replacement for the very lamps they invented! But on the other hand, all credit to Philips for developing lamps that are compatible with existing gear including HF and emergency without modification! That would've taken some pretty serious circuitry...
by Tom
Wed Aug 10, 2016 7:29 pm
Forum: Street Lighting
Topic: Interested In Light Pollution?
Replies: 2
Views: 2172

Re: Interested In Light Pollution?

Will be interesting to see the map in a few years when LED has taken over....
by Tom
Fri Jul 15, 2016 4:12 pm
Forum: Lamps
Topic: Help Identifying Lamps
Replies: 9
Views: 2507

Re: Help Identifying Lamps

Appears to be the 25w Rough Service (reinforced filament construction) version too. Good find! Often used as a 'headlight' in upright vacuum cleaners of the 60s and 70s. I Once had a Hoover branded GEC 25w SBC pygmy!