Back in the 1980's when I was installing a halon fire suppression system in a mission control center, I used similar more expensive gear to trace hundreds of wires. The goose neck on the probe is a feature not seen on the domestically manufactured equipment. It looks handy enough to justify adding it to my collection, especially if someone wants to borrow my tone tracer set which costs around $80.00 and people are bad about breaking things they borrow. ^_^
TDD
I never used the transmitter yet. I always was thinking of buying the more expensive unit.
Most of these are billed as having induction. This does not mean magnetic or emf. It's strictly electrostatic field. One day I'm going to modify it to pick up either field, for the ghost hunters !!
Greg
Oh heck! Get on Amazon and search EMF meters. ^_^
Too hard for me to cut.
The trouble with most emf meters, they don't tell frequency. With a speaker at least you hear harmonics. Even 60 hz is difficult or impossible to hear without headphones.
Greg
For a strange hearing experience, I have an ultrasonic leak detector that listens for the high frequency sound waves caused by escaping gas from tiny pinholes. It has a bar graph display composed of LED's and an earphone output for headphones. The circuitry picks up the ultrasound and converts it to audio in the range of human hearing. A ring of keys being slightly shaken sounds like wind chimes in the headphones and rubbing your fingers together lets you hear the sound the ridges and valleys that make up your fingerprints produce when scratching over each other. If you ever wondered why shaking keys make dogs go nuts, you'll know why when listening to the ultrasound through the detector. ^_^
TDD
I got a laser with chain, which I sometimes entertain the cats with. I can't pick it up without them looking at me.
Greg
"Continuous Secondary Neutral" if by that you mean it is connected to all service points fed by each separate transformer, then ok, if you mean that all the secondary neutrals on all transformers are connected in common, not where I am from...
You can clearly see on some streets which used to be fed from only one transformer that now have more than one now feeding the houses, that the original wires have been cut, drawn back and taped up to break the circuit in the areas fed by the new transformers...
As far as what I said not applying to the OP's question, it does, the transformer breaking down power from intermediate distribution voltages down to residential 240 volt service is providing single phase power with a center tapped secondary winding providing the neutral which allows for 120 volt loads...
~~ Evan
That would only be considered "high voltage" to someone who is only familiar with "low voltages" less than 600 volts...
It is usually called "intermediate distribution voltage" or "medium voltage" by people who know what they are talking about...
clue what
Have you ever tried cat juggling? You must catch the cat because the critters can't handle end over end flips and they would land on their furry little heads and get hurt, that would be mean and cruel but it's very entertaining. ^_^
TDD
The distribution FPL uses is wye primary feeding the regular center tapped secondary. The neutral is common with all of the transformers and the neutrals on the secondary which is a bus feeding several houses.
This is a place where they cut into the bus and set an additional transformer. Notice the insulators in the secondary bus to the down stream houses. The neutral was not cut
Well, I've worked as an electrician and had to get certified to make high voltage splices and connections on buried "high voltage" power cable rated at 15,000 volts. I've worked with a lot of "high voltage" switch gear that used 4,160 volts. What kind of "high voltage" equipment have you serviced and installed? I don't know what your experience with electrical power distribution may be but I can assure you that me and guys like me who want to live, call any electrical power over 600 volts "high voltage" and treat it as "high voltage" because we want to keep living. ^_^
TDD
Here is a better picture of the insulators, notice the neutral on top is unbroken
| | [christmas presents]
I saw keyring size lasers in Dollar Tree, yesterday. They sure have come down in price. I carry a laser for occasional pointing at things at a distance. Or, so I tell people. Really, it's for ammusing cats.
Christopher A. Young Learn more about Jesus
I got a laser with chain, which I sometimes entertain the cats with. I can't pick it up without them looking at me.
Greg
What "high voltage" is depends on who is using the term and sometimes the context. What you wrote is correct.
In any case it is another useless post from Evan.
Evan is right, utility workers call anything from 601 to about 50kv medium voltage.
High voltage can get up to around 1 million volts. The HV lines you see in the background of the pictures I posted are
250,000 v
Linemen who work on high voltage power distribution systems use a very different point of reference than us lowly mundane electricians. What I said stands. ^_^
TDD
As I wrote, it depends on who is using the term.
For this newsgroup I don't see correcting Dufas being at all useful, particularly when Evan said Dufas did not know what he was "talking about". Perhaps in an electrical engineering forum....
Somewhere like here I would likely use transmission, distribution, and utilization voltage.
I lost my dear friend rocky. He loved the laser. When younger, he would take a stance indication he wanted to play. The day I showed him a harbor freight line leveling laser, he went bananas. For a few days, that's all he wanted do do.
Greg
Your cat wanted do do? Hum, strange cat. ^_^
TDD
Have something to add? Share your thoughts — no account required.
Ask the community — no account required