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My Dad who is a Master Electrician shows how to Install a Commercial 3-Phase Breaker, Thoughts?

1:55
69.1K views

Video by Hendy The Sparky

Hendy The Sparky

What happens here

This video provides detailed instructions on how to correctly install a commercial bolt-on circuit breaker, emphasizing pre-installation testing and proper screw tightening techniques to prevent damage and ensure a safe electrical connection. The process highlights crucial safety practices, including manual torqueing and one-hand operation, to avoid common installation errors.

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So, it snaps in. So, what I'm going to do is I'm going to push It's touching perfectly the bus. So, what I like to do on my Square D breakers, QOB breakers, I'll turn the breaker on and then on the load side I can hit it and trip it with an impact. See how it tripped? That lets me know that this breaker is working properly. Now that I did that, I'm going to make sure it's off. So, what I'm going to do is I'm going to locate this side bar. Now, they're captive screws, so they're going to stay in there. And I want to make sure they're not too sticking out and I'm going to push in on the side bar till it snaps in. Now, this is what a lot of rookies do. They use a drill. You do not use a drill unless you are a journeyman. Okay. Why is that? Because these are aluminum and copper, very light, easily stripped metals. Okay. So, they're so easy to cross thread. I can't tell you how many times in my career I show up and one of these screws is cocked or burned because it wasn't put in properly. Yeah. So, you can eliminate all that headache by just using number two square tip screwdriver. Okay. One hand, I've got an insulated glove on. One hand and I'm going to put the screw in and I want to turn it till I feel it bite into the thread. One hand now. Yeah, cuz you don't want to uh well, create a loop, right? Always go one hand. If I go like this, now I create a path through my body. Now that I've got it in, now I'm going to I'm going to manually torque it by hand. Nice. So, you can see every screw is completely flat. It's touching perfectly the bus. That's a great connection. And now I can turn it on and off. Of course, I'm going to leave it off and now I'm ready to put the wire in. Nice. Yep, I see the MC cable. Nice. You got a big screwdriver for me or not? Let me check.

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