Great video weird that in any of our schools I’ve never worked on any exit signs with AC and DC bulbs in the same unit with self-contained batteries all of the ones I’ve ever worked on that have AC and DC bulbs separate have always been powered off of a remote battery pack
@@FireAlarmDude5967 yes definitely for emergency lighting but ever since the early 2000s self-contained exit signs have became much more popular and you don’t really ever see remote battery pack exit signs anymore but you still see remote battery pack emergency lighting all the time from a maintenance standpoint it is so much more convenient to replace say 10 35ah batteries vs 100 little units easier to keep track of maintenance records anyways
@@FireAlarmDude5967 True wire costs can be more though as usually it Hass to be a much larger conductor for example we often use 10 gauge for Voltage Drop since it’s only at 12-24 DC and you can’t just go off any nearby lighting circuit you have to go all the way back to the battery pack so the cost might end up almost equal in the end hard to say
I went to a gas station and 2 emergency lights were on, they were very dim and the AC light was on. It was the multi-led version of the 3rd generation shown at 3:10
I think I have seen a reflectorised second gen ELM (Yes second generation not third generation). The place has both second and third generation quantum exit signs and fixed optics units (In a large space which a fixed optics unit isn’t suitable for. It was a go kart racing place). It also has only one Spectralert classic fire alarm which isn’t enough for a large space with loud go karts
Do you know somewhere you can get fire extinguishers cheap? I'm trying to make a collection and my parents aren't obsessed with the idea and my grandparents have old extinguishers in her storage workshop but doesn't want me to have any..
