Now, there's a 240-volt circuit have a neutral. Does it know now? Are there some 240 volt appliances that do have a neutral? Well, what's an example of one dryer range they'll have it they will have a neutral, and that's because there are certain 120 volt components in it right, but on a a c condenser is there a neutral? No there's not there's just ground and ground is what what is ground for safety circuit right ground is a safety circuit, so the ground isn't carrying anything and it's never designed to carry anything. So but let's say I decide to use ground like I said we teach we're, teaching symbols as we're teaching everything else, so the symbol for ground is like this. Something like that.

Okay, so I'm gon na use this as my ground. Reference point in this in this set up here: let's will remove this switch, so we got a got a motor here, shaded pole, 240 volt motor. You know I'm calling it a shaded pole motor anybody know because it only has two legs. You want the chair out.

Okay, yeah cuz, the chair, the chair, is causing some sorry about the chair. This whole time the circuits been shorted, it's bothering Jesse, that's good, it's a sign of becoming anal, which it makes a good technician all right. So we've got a shaded pole motor here. We know it's shaded pole, because it only has two legs coming into it right, otherwise would that to have a capacitor if it was a permanent split, capacitor type motor, all right, okay anyway, that was that was a little nerdiness all right, so we've got 240 volts.

We got ground here right, so what am I gon na read if I go from here to here 120? What am I gon na read if I go from here to here? What am I gon na read if I go from here to here? What am I gon na read if I go for you're here to here? What am I gon na read if I go from here to here right? So what's the problem there, it's not telling me anything because no matter what I do, I'm getting 120 now. Why do I read 120 when I go from here to here, because the switch is open? Why am I reading 120, it's back feeding through l2 right, so I'm still reading 120 using ground. It's really isn't telling me much now. Let's do this way I'll and this lead here and I go here.

What am I gon na read 240? What am I gon na read? What am I gon na read? I'm gon na read nothing because it's connected through here, but it's not doing any work. That motors not allowed to do any work, so this becomes electrically the same she's kind of tricky cuz guys think well, wouldn't there be voltage drop through here. Just trust me you're gon na get one. Don't worry about that right now, no work is being done.

So you're not going to read anything between these two points. Does that make sense follow me and that's why that's the danger of guys getting used to using ground, because ground works fine, most cases on 24 volt, 120 volt circuits. In most cases, it works okay, because in most cases they are properly connected bonded between common and ground and neutral and ground. But in the case that they're, not it won't work and then also, if guys, get used to doing it, they try to do it.

At 240 volt circuits and they get incorrect diagnosis because here's what they do they go through and let's say let's say this - isn't an open wire, but instead it's actually a burned up. It's actually an open something busted, so they go here and they say 120. 120. Well, I got power to my motor.

Why isn't it running bad compressor, bad whatever? It's not how it works, because in this case there is no neutral ground is only there for a safety circuit.