MermElectrics

updated: 28 March 2020

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Having worked as an electrician for the past 42 years.

I would like to share some things to people who may be interested in tid-bits of information from that world. Just things that may help you complete a task at home. Things like:
  1. How to hook up a 3-way switch
  2. Wiring order of a CAT-5 connector
  3. How to successfully thread PVC pipe
  4. A portable bidet - ( An inexpesive solution to cutting the toilet paper umbilical cord! )
  5. A portion of your house has lost power (Coming soon!)

 

How to hook up a 3-way switch

There's usually at least one 3-way switch in a home and at some point it will need replacing. These are the switches that are at either end of a hall or stairway. I'm going to help take the frustration out of the job.

REMEMBER when working with electricity it is important that you turn off the power at the circuit breaker first before starting!

3-way switches have three wires connected to them. Some switches have screws for the connections, others have the wires stabbed into the back of them. Out of the three wires, only one of them is a critical connection wire. That would be the wire that is connected to the "common" connector.
The common connector is indicated by a black screw on the switches that have screws. The switches that have the stab holes in the back have the common connector actually tagged with the word "common" of just "com".

It is very important for your sanity that you indentify which wire is connected to the "common" terminal before removing any of the wires. Always try to disconnect the wires whole rather than cutting them. The wires that are stabbed into the back can be easily removed by sticking a thin small screw driver, (like a jewlers screwdriver) into the tiny "release" hole alongside each inserted wire.

An electrician's "secret weapon" is the
"Xcelite R3322 Screwdriver".
It was practiclly made for this purpose!

If you had X-ray vision, you could see how the wires are connected, but for people like you and me, here is a diagram that shows how they are connected:

Always mark your wires. If anything, at least mark which wire was connected to the common terminal. The other two wires just talk back and forth between the two switches. They actually can be interchanged.
Only the placement of the Common wire is extremely important. On one side of the circuit, the (HOT) power coming from the circuit breaker is connected to the common terminal of the first switch. The "output" of the 3-way circuit, which comes out of the second switch's common terminal, goes to the center connection of the luminaire (lighting fixture).
One cannot rely on the geographic location of the wires on the switch unless they are exactly the same from the same manufacturer. Since each manufacturer has to make their own patent they do not make the layout universal. The only thing universal is the black screw and the "common" tag of the "common" terminal!

Hope this helps you get your switch sorted out to make a quick and easy replacement!

 


Wiring order of a CAT-5 connector

Putting together a CAT-5 or 6 cable is pretty straight forward, if you follow this graphic that I had made as a cheat sheet for myself back in 1999.

What you need to know is the strip back the outer cable cover about an inch, then using a small wire cutter, (or electrician scissors), trim the ends of all of the wires together so that they are all straight across the same length.

Now here is where some folks go wrong: Never strip back the wires that are actually going to be inserted into the RJ-45 connector. The connector has blades that will cut through the insulation and connect to the wires. If you strip the wire insulation off first, then you are risking a bad conection in that connector. So please don't do it!

If you are interested, I use this tool kit for making up the cables:
Telemaster RJ-45 Kit!
When in a pinch, "Channellocks" work good to crimp the connector down.
Channellocks have the capability to go down straight with even pressure.
Regular pliers do not!

 


How to Thread PVC Pipe

Anyone who has attempted to thread PVC pipe knows that it appears to be almost impossible, yet they sell threaded PC pipe in the irrigation department in most home improvement stores. So what gives?

The first part of the trick is to thread Shedule 80 or above! The pipe wall of Schedule 40 is too thin to thread! By the time the threads are cut, the pipewall is super thin in the groove of the threads and easily tears open.

The second part of the problem while threading PVC is that it collapses while running the pipe through the die.

I worked with Ray Hill, a man who has unfortuneatly passed away from a fork lift accident. Ray discovered that if one puts something snug into the pipe to support the inside from collapsing, any threading device can be used. Since Ray's discovery, we have consistenly threaded PVC pipe from 1/2-inch to 4-inch! The equipment that we have used for threading Schedule 80 PVC are: Unfortuneatly for this article, I have retired and therefore no longer have access to the equipent to make a YouTube video so this page will have to suffice! Ray had turned a bunch of wood plugs on a lathe to use as inner pipe supports for threading the PVC pipe. But I discovered that the inside pipe diameter of an Schedule 80 pipe is similar to the outside pipe diameter of it's next smallest pipe.

As an example, if you want to thread a 1-inch pipe, you take a 3/4 inch steel pipe nipple of a nominal 3-inches long and run the threads of one end over a grinder to knock the sharp cutting edge off the thread ridges. This is to prevent the steel pipe nipple from etching small lines inside the PVC pipe which could cause it to break at that point later on (like cutting glass: scratch and break).

Miscellaneous Thoughts:
  • We used "Simple Green" as our lubricant when threading the PVC pipe. Using oil is unnessesary and messy!
  • For 1/2-inch PVC pipe I used a deep socket from my tool drawer as the inner support media. You can use just about anything that will slip into the end of the pipe snugly. The media has to allow the pipe die to pass over it. So nothing that has a head on it! Except a socket head shoulder bolt will also work.
  • The support media should never be forced into the end of the pipe. Doing so would cause the pipe end to flare and then force the die to cut the pipe threads too deeply.
  • Using threaded steel pipe nipples as the media support with the threads dulled works the best since they have a small taper on them which makes them insert easily into the end of the PVC pipe that one is threading. It just has to be snug enough to not fall out, but not tight enough that it is flaring the pipe end.
  • The threaded PVC pipe nipples that are sold in the home improvement stores is Schedule 80. If you like, you can buy longer ones at the store and then use them as "stock" to make your own custom lengths. (1/2" x 36" 3/4" x 24")
    Otherwise to find schedule 80 pipe, you must go to an irrigation supply store, like "Ewing" or "Bonnett Irrigation"
Size Chart
Steel Pipe Nipple fits into Sched80 PVC
This is for threading the PVC pipe only!
Threaded Steel Pipe
Inches
Fits into
PVC
Inches
3/4 1
11-1/4
1-1/41-1/2
1-1/22
22-1/2
2-1/23
3-1/24

Anything that will fit snugly and clear the cutting die will work! You don't have to buy fittings to do this. I used pipe fittings because at work we had bins full of them. So they were readily available.


A Portable Bidet

After some of the news agencies were able to generate a national panic towards toilet paper, one begins to think how can one live more peacefully without the “generated fear” of having no toilet paper!

If you think that your toilet paper is doing a good job, then try this test:
First take a paper towel and after having folded it into fourths, get the folded paper towel damp. Then after you have completed your toilet paper business, and use the folded, damp paper towel to wipe your back area again and see how much your toilet paper has left behind!

There is the bidet that is really popular in countries other than the United States - https://en.wikipedia.org/wiki/Bidet. The problem is that most bathrooms in our homes were not constructed to allow space for a bidet. So an inexpensive alternative is to use a ‘portable bidet’ as I call it.

A portable bidet consists of a
A 500 ml laboratory wash bottle with the tip trimmed back with a razor knife for higher flow. (See here)
Just so you know, there is a portable bidet that’s actually for this purpose, but I have no experience with it and the bottle looks like it is not durable like a laboratory wash bottle is.
(See here)
A roll of quality FULL SIZE paper towels – Bounty or Brawny.
(others dissolve in hand when wet …yuck!)
A bathroom trash bin with a closing lid and disposable liners.



With the narrow tip trimmed off the nozzle of the laboratory wash bottle it makes a good stream of water to wash one’s private parts. Since the bottle is going to be used while holding it upside down, one must remember to remove the internal straw/siphon tube. For added odor control add about 2 tbsp of white vinegar to each 500 ml bottle when refilling.

Remember to never flush a paper towel down your toilet! They are not designed to dissolve like toilet paper is! The paper towel will clog your sewer line!

To use:
  1. After you have finished your business, turn the wash bottle upside down and aim the nozzle towards your intended target. Gently squeeze the bottle to wash the area.
  2. Then fold a full size paper towel into fourths. Typically one can get 4 wipes out of one full size paper towel by folding and unfolding to expose 4 separate clean sides for wiping without getting one’s own hands yuckified.
  3. When completed, please remember not to place the paper towel into the toilet, but place it into the trashcan you should have already placed alongside the toilet.


This works perfectly in a household that does not have mischievous dogs and small children!

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