Old brigade

[cliffed]

Emg light from early 70’s & today’s emg light.
Dont know about the older sparkies I would of loved to have known more about electronics.
look @

 

[ipf]

Come on! Give us a clue......which is which?

A 6ft fluorescent with auto transformer start compared with a 6ft LED...…now there is a comparison...

 

[freddo]

early 70s? I would have guessed somewhere in the 90s.

 

[Lucien Nunes]

The older fitting actually looks later than 1970s to me, plus the number 2698 on the transformer is quite likely to be a date code (week 26 of 1998). The technology of the newer fitting is actually also 1990s but still sort-of current for low-tech and low-cost products; through hole components, carbon film resistors, single-sided FR2 board etc.

Post crossed with Freddo

 

[cliffed]

The older fitting actually looks later than 1970s to me, plus the number 2698 on the transformer is quite likely to be a date code (week 26 of 1998). The technology of the newer fitting is actually also 1990s but still sort-of current for low-tech and low-cost products; through hole components, carbon film resistors, single-sided FR2 board etc.

Post crossed with Freddo

Tell me more,great explanation,but way too much for me.

 

[ipf]

early 70s? I would have guessed somewhere in the 90s.

I agree. Hence the 'which is which?'.

 

[snowhead]

I started in 1967.
None of the buildings I worked on or in had emergency lighting.
None had standby generators

If the lights went you, you found your way out, somehow.
However those buildings had secure and dedicated supplies, with backup supplies available. (H.M Gov.)

Come the crisis in the early 70's we installed a lot of generators very quickly for essential basic supplies although they were hardly ever used.

 

[R-fur]

Back in the seventies emergency lighting was usually from a central battery. A phase failure relay switched all the backup lights on if any phase went down.

 

[westward10]

I remember fitting some em bulkheads in the eighties which had MES bulbs.

 

[ipf]

I remember fitting some em bulkheads in the eighties which had MES bulbs.

Glowed, they did. Ever do a lumen test on 'em?….I never.

 

[westward10]

Glowed, they did. Ever do a lumen test on 'em?….I never.

We put them in a fairly big comms room they were as good as useless.

 

[ipf]

We put them in a fairly big comms room they were as good as useless.

Social clubs for us, 70's and 80's, loads of them wired in pyro. Do you remember the exit box units with two brass lamp holders? Rubbish but nothing better, so served a purpose, I suppose. They cost a fortune, too and forever replacing the lamps.

 

[R-fur]

I still come across central battery systems in old large substations, nothing automatic just a DC rated light switch controlling 110V 60w lamps

 

[Mike Johnson]

Good grief you lot make me feel old, according to the government I am very vulnerable so staying inside for the next few weeks, good job I got the wine stocks replenished.

 

[littlespark]

Old emergency lights? I’ve got loads.
They’re made of wax and come on with a lighter

 

[ipf]

Good grief you lot make me feel old, according to the government I am very vulnerable so staying inside for the next few weeks, good job I got the wine stocks replenished.

If you want to feel vulnerable, you're in the right place on here.....codger
[automerge]1584656535[/automerge]

Old emergency lights? I’ve got loads.
They’re made of wax and come on with matches

Corrected that for you..

 

[Mike Johnson]

You young whipper snappers don't know your born, when I was a lad living in middle of motorway.....................

 

[electric al]

Motorway ? Lights ? Luxury lad !!

 

[Mike Johnson]

Well we called it a motorway, but really it was just an unmade cart track........

 

[electric al]

A track for carts ? Wowser ! How decadent a lifestyle you lived