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It's sometimes lost in the translation that these old 10-30 plugs were designed for buildings that had no ground wire. They used the neutral to perform double duty, to give a neutral leg for circuits that required only 120 V inside the appliance and they used that leg for grounding the chassis frame. The problem with that was the way the cabinet of the appliance could become charged with voltage applied to the neutral wire, even from another appliance sharing that same neutral. When modern homes began including a ground wire, the intent was to make these obsolete so there would be no chance a neutral bond at the old appliance. Along came the 6-30 receptacles, which used two hots and a ground (no neutral). This worked great for welders and other devices that didn't require that half voltage neutral leg, it avoided any chance of inadvertent bonding of the neutral wire, and it provided a legitimate equipment ground that never had normal voltage or current applied. To prevent the two styles from being inadvertently mixed, they made the plug designs incompatible with each other.

This piece is 1000x better than the Klein volt/con tester.

The best only one nut screw driver is made by klein tools. It has sockets around the adjustible length 1/4 inch shank and storage in the handle for standard 1/4 inch bits. You can also remove the shank and use it in an impact driver.

🥇💯❤

Mike Holt discussed this on his channel: th-cam.com/video/y7rsHclQ5KE/w-d-xo.htmlsi=Ri1ImR2tzkSPMVut

They’re gone already

Great video! Amazing edition! Very informative!

How primitive, grounding switches. Why not make them d9 that they do not need grounding?

thank you, almost went back in safety standards. My house has a 14-30 plug for the dryer and the one i picked up had a 10-30 plug.

very informative👍🏽

Nice!

Great video. Thanks.

Thank you so much for this.

You are a master at making instructional videos brother.

I have this screwdriver. It’s one of my favorites. Typical Lenox quality which is very good. I just learned the magnetic bit holder pulls out making it even shorter.

Dumping the wire nuts on your table gave me some serious anxiety. Everything was better when I heard that two stroke Jimmy purring. 😊

Channellock are the best

When working with the plastic boxes, I've gotten into the habit of running the screw for the ears all the way down and then back out, before I install it. This loosens it up just a bit, and makes it much less likely the ear will flip over while trying to tighten it down.

you have the hairiest knuckles i have ever seen. BTW great video

Whats yoir favorite color. Thats the difference.

Great idea, thank you

If my electric dryer comes with a green wire screwed too the case do i just add the ground comming from a 4 wire updated cord? Nice video. Looking for this answer for hours .

Use it with a torque wrench not an impact driver to be on the safe side

I meant to ask you earlier, WHERE did you get this huge selection of boxes? Did you get all of them at a REAL electrical supplier in a big city? Out here in central PA the real suppliers have surrendered to the big box stores, who carry only a narrow selection, and usually half of it is out of stock at any given time. I remember when I was about ten years old, how much I enjoyed looking through my grandfather's catalog of plumbing fittings ... wow, what a selection! Your video was almost that much fun. Thanks again for your excellent work putting it together!

Absolutely EXCELLENT video! You showed me several box types I've never seen before (because the big box stores don't carry them). These are real problem-solvers. VERY informational content. (And no meaningless music, no ego-driven blather, just the exact content I needed.) Thank you again for posting this! You're a real champion!

1:08😆

Great video great explanation great information I like the way you highlighted everything too

4:05

I really like how you enhanced the talking points with graphics. I also liked how you ghost wired the plug. I think you did a great job explaining the information.

It would have to be a 4 prong

The Cantex box is just... dumb. Blue one is a far better design. Thank you for demonstrating both common options.

Thank you, man. Your video was super useful.

I have a 4 wire 220 volt wire with 3 black wires and an exposed wire. 1 ribbed black wire, 1 solid black, 1 solid black with a faint red line, and 1 bare. Is the ribbed wire my Neutral? Mahalo in advance.

Awesome video! Much Mahalos 🤙

This video is top shelf, seriously the first one I came across, trying to answer my question and you did such an excellent job, describing the problem and how to remedy it. Thank you!

I LIKE !!!!!!!!!!😀😀😀😀

Excellent video

Very informative, thanks.

Thanks for the instruction. Question: I need to replace a 240v/30amp 4 prong outlet to a 120v/30amp RV plug. Can I simply cap the extra hot wire and attach the other 3 (hot/ground/neutral) and call it good? Would there be any issue with the currently installed 2 pole breaker

klein decline

just what i needed to know. going with the blue box

Excellent video. Helped me out. 5 ⭐️

The thermocouple at the end of the video is for newer versions such as version V that directly support the thermocouple. You need the Fluke 80TK temperature module for the Fluke 87.

I have an original Fluke 87. I purchased it around 1989 or 1990. I had to replace the elastomer strips that connect the PCB to the LCD display. This was a problem with the original version where the display would fade from bad contacts.

Awsome thanks

Channellock the best

What do I do if I have the 10/2? 2 hot and a ground, no neutral white? Leviton 3 prong surface mount receptacle

I’m relocating a range and was going to buy a new box and outlet. But I found an outlet Im and box in my garage (abandoned shop 220v) that matched up with my range… now I understand how to ground that box 👍🏼

Bro… flatline ---

Do you have to attach to opposite ends of the cable? That's not going to help for some spools where the other end is buried in the spool. I've seen videos of some of these that can tell the spool length by attaching to cable on the same end.