So, this is the critical gear. You've got 1,200 amps. Welcome to the data center. So, Chris, 21 years ago, I built this the UPS room, which feeds the data center, right? Let me show you how we did this. All right, go. So, this is the critical gear. This has two independent services feeding it. You've got 1,200 amps on one side fed from MEP1, and then we have another 1,200 amp service fed from MEP2. We talked about redundancy. Everything is redundant. Right now, MEP2 is off. This is the redundant backup. Now, if we go across here, we'll see [music] that this one is on. Now, this device right here is known as a Kirk key. This key cannot be taken out unless I shut the breaker off, and then I can retract this, and I can remove the key, okay? All right. This prevents both of the services being on at the same time. But, what will happen is, right now, this is feeding through to all these sections. [music] If we have a failure of MEP1, what we'd end up doing is shutting that one off, removing the key, coming over here, and put that key in here, and then we can turn We can See, right now you can't turn it on. See, this is in the way. Yeah. That's in the way. So, we need to retract this with a key. Oh. So, it's it's like it's kind of like common sense, yeah, but this prevents you from turning both services on. If we overload the system, we have the ability to run both with this tie breaker. Oh, I see. Okay. This is a tie breaker, okay? So, the power comes in here to the bus, to this breaker, and feeds this side. Okay. If we had a lot of load and we needed both services on, we would open this up. Okay. And that's why this has the key. We would We could turn this off and then turn on, this key would come out, and then we could use the key to turn that side on, and this side is already on. So, basically, these Kirk keys helps keep in order what we need for the main gear. Now,
