Ok so after making it red and underlining it I decided to do what I do best...numbers.
Pic 2 shows 17 Modules. I'm going to assume that they are 2.5k W dimmers (I would say the most common rating, but by no means the only one). That means that you have 17 x 2500W going into the rack. Thats 42,500 Watts possible, thats something on the order of that amount of power going through a low power overhead line.
Just one dimmer (if its in fact 2.5k W) would have 120 V and 20.83 Amps (2500W/120V). Now if I had to make an approximation of the amount of power it would take to kill a person, I'd say something like 1 Amp at 120V. Yah that's A LOT less than 20.83 Amps.
In one last point, every modern dimmer rack that I've dealt with has 2 dimmers per module. If thats the case then you have the potential for doubt the power going into the rack.
Now do you understand why we're really touchy about you playing around inside the rack, and why the company has very specific protocols for powering down your dimmer rack so that it can be worked on?
My point is that as previously mentioned the building manager may or may not know any more about the system that our new friend Sync. That in mind even if the building manager knows about electricity and it's dangers. He/She maybe not realize exactly what goes into a dimmer rack. I'm not saying you have to LOTO to clean a dimmer rack. I'm just saying make sure you have a talk with someone that has a good idea (keywords) exactly whats going on so you can stay safe.
Sorry, but that point is arguable.Ok so after making it red and underlining it I decided to do what I do best...numbers...
2.5Kw dimmers exist only in countries that have 220-240VAC power. The standard in this country is the 20A, 2.4Kw dimmer, usually in dual modules.Pic 2 shows 17 Modules. I'm going to assume that they are 2.5k W dimmers (I would say the most common rating, but by no means the only one). ...
Dimmers are rated by their circuit breaker, and you'd be hard-pressed to find a 20.83A breaker. The OP has 17 Quad modules, which I suspect are 10A, as 20A quad modules are rather rare (Kliegl and EC come to mind). This would yield a total theoretical load of (17*4*10)=680A. The NEC allows "undersizing" of incoming feeder, as not every dimmer will ever be loaded to full capacity, and the disconnect switch looks to be of 120/208VAC 3Ø Wye-connected 4W+G, 200A size.Just one dimmer (if its in fact 2.5k W) would have 120 V and 20.83 Amps (2500W/120V).
From here: A low-voltage (110 to 220 V), 50 or 60-Hz AC current travelling through the chest for a fraction of a second may induce ventricular fibrillation at currents as low as 60mA....Now if I had to make an approximation of the amount of power it would take to kill a person, I'd say something like 1 Amp at 120V. Yah that's A LOT less than 20.83 Amps...
That's what I wanted to hear, basically I know in high school I would have just turned off the breaker and had at it, and if that had happened odds are good I wouldn't be here.
Yeah, after all of your warnings, I was quite unimpressed with the "HUGE AMOUNTS OF ELECTRICITY" and the implied amount of danger. I'm pretty sure that there was more danger of getting my ID sucked into the shop vac and strangling me. I'll try switching the modules in the next couple weeks.
Lock out, tag out and take the bad module to the nearest theater dealer for repair.
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