"Never leave your ethernet cables like that"

[QuiveringGibbage]

This thread is for the purpose of educating and disseminating information to combat the dubious or false information spread by ill inform and lazy posters (namely tzortz).

It is acceptable to coil Ethernet cables when they are too long for a run.
Coiling Ethernet cables will NOT create inductive currents that can blow devices on both ends of your cable.

It was suggested to me here:

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(https://i.imgur.com/SS8NCCV.jpg)
Say HASH!!
QG

Never leave your ethernet cables like that.

and carried on with:

It creates a coil like that, and inductive currents can blow both ends. I mean the miner controller + the rooter.

I've done my Google-fu and cannot find anything to back up tzortz claim. Please prove me wrong.

QG

[QuiveringGibbage]

The posts continues with..

It creates a coil like that, and inductive currents can blow both ends. I mean the miner controller + the rooter.

Wow, rly ? U think there is enough inductive current to blow something ? What u think how long cable needs to be ? And do u have some actual proof that did happen to somebody ?
Only asking coz i do internet networks setup, left cables like that if they are to long many times .

Dont worry about it. While in theory current is induced, it is soooo low u cant really measure it.

You get like 12V / 1A from induction when hanging a huge coil below a 10000V landline.

So yeah, the odds that a meteorite would crash into your home is probably higher than you blowing anything out because of induced electrical currents.

Yeah that is what i thought so . I know in theory it can happen but, i mean that like 10m of UTP cable cant do no harm.

You have no idea how a thunder can screw you by inductive fields.
Happened to my shop last year, all cameras, printers and fax, usb sides on pcs got blown by a thunder hit a mile away.

I dont care if you dont do your research, it is your equipment do as you wish.

ps. Micro, you are an expert in network setups, huh? Do you have some actual proof?   

and this...

Thank you for your clarification, I meant lightning and not thunder, English is not my native language.

As about coiling , as I said before do as you wish , it is your equipment.

I give up.

Simmering, QG

[KWH]

8 rigs in a rack, CAT5e cables all coiled up nicely, no damage and been this way for years. Maybe I'm just lucky.

[phzi]

Networking professionals coil cables all the time.  Ethernet is specifically designed to avoid this sort of feedback.

Tzortz is an idiot.

[MICRO]

Networking professionals coil cables all the time.  Ethernet is specifically designed to avoid this sort of feedback.

Tzortz is an idiot.

Im not even a professional and i do it also, and much longer than that guy on his rig. Never had any problems. But i just wanted to know why he thinks like that, maybe he read it somewhere or something. And asked nicely for link of that.

And he went straight to demanding proof that im an expert in network setups , which i never said i was in the first place

@QuiveringGibbage , there was no need for this specific thread , but there should be one like this saying .

Do NOT post and tell shit that u know nothing about !

Forums supposed to be helpful and reliable source of knowledge.

If we all post about things that we know nothing about, that can only be counterproductive and never helpful .

[GuyllFyre]

The short length and very few coils on most cables isn't going to cause any harm.

Now, in theory, if you have a 100' tightly rolled cable, and only use a few feet of each end to connect things together because it's the only cable you have, then plop it on top of a fluorescent light with a magnetic ballast or over a server power supply and/or fan array (fans all use magnetic force to spin them), there may be enough of a moving magnetic field to induce a current.
Depending on the equipment, it will range from damaging the network port and making it permanently inoperable or it will just cause massive amounts of interference that causes too many CRC errors and/or the ports will not negotiate a connection and if they do, it'll be like 10 Half.

I've actually experienced the latter at customer sites when I was working consulting.
I would put in a proper length cable, routed away from the power supplies, fans, and lights, and the problem would be resolved.
Tell the customer it was a bad cable, keep the 100' for where it's needed.


Same problem can happen when cables are straight but bundled in parallel with AC cables.
They can induce enough of a current to cause interference.
Move the cable at least 12" away from the wiring, and all is good.

If you must cross over AC wiring, you must do it perpendicular to it.  That way the twisted pairs will cancel the noise.

[MICRO]

The short length and very few coils on most cables isn't going to cause any harm.

Now, in theory, if you have a 100' tightly rolled cable, and only use a few feet of each end to connect things together because it's the only cable you have, then plop it on top of a fluorescent light with a magnetic ballast or over a server power supply and/or fan array (fans all use magnetic force to spin them), there may be enough of a moving magnetic field to induce a current.
Depending on the equipment, it will range from damaging the network port and making it permanently inoperable or it will just cause massive amounts of interference that causes too many CRC errors and/or the ports will not negotiate a connection and if they do, it'll be like 10 Half.

I've actually experienced the latter at customer sites when I was working consulting.
I would put in a proper length cable, routed away from the power supplies, fans, and lights, and the problem would be resolved.
Tell the customer it was a bad cable, keep the 100' for where it's needed.


Same problem can happen when cables are straight but bundled in parallel with AC cables.
They can induce enough of a current to cause interference.
Move the cable at least 12" away from the wiring, and all is good.

If you must cross over AC wiring, you must do it perpendicular to it.  That way the twisted pairs will cancel the noise.

Sounds interesting but its mostly theory . And there was only like 3-10 meters of cable and not so tightly rolled , and its Ethernet cable , its designed not to induce current. Now im getting out of my knowledge zone LOL.

Just show me some video, or text with proof that its possible with ethernet cable and i will reconsider . 

[QuiveringGibbage]

Same problem can happen when cables are straight but bundled in parallel with AC cables.
They can induce enough of a current to cause interference.
Move the cable at least 12" away from the wiring, and all is good.

If you must cross over AC wiring, you must do it perpendicular to it.  That way the twisted pairs will cancel the noise.

note: nothing about AC cables in OP.

[MICRO]

Same problem can happen when cables are straight but bundled in parallel with AC cables.
They can induce enough of a current to cause interference.
Move the cable at least 12" away from the wiring, and all is good.

If you must cross over AC wiring, you must do it perpendicular to it.  That way the twisted pairs will cancel the noise.

note: nothing about AC cables in OP.

There are non AC cables on that picture, and very short Ethernet cable .

Maybe its theoretically possible but highly unlikely . Just about the same chance for u to get same private key with somebody else for bitcoin wallet LOL .

[morphtrust]

sorry to butt in but I had to mention that I noticed after following this here, that the guy never came over to try and back up his claim either, guess he ran off lol

Also I am guessing he is in the same arena that thinks they can set up "JUST THE RIGHT" configuration of coils and get more power out than in, thus probably someone who follows and believes the BS from the witts group, (a group that has made a living selling junk designs for overunity devices to gullible fools desperate to end their money woes by making free energy lol)

Might be interesting to use any info he has here and do a search on google for him, instead of his claim and see if he is a member of any forums like overunity.com, or anything remotely like it lol.

[gibleh]

HAHAHA this is gold. Coiling your cables (Ethernet or power) wont do anything real negative. Ethernet cable coiled RARELY creates induction as induction requires an ALTERNATING current. Ethernet is a dc voltage with 1's and 0's modulated onto it. Normally a square waveform. Hence no/extremely little induction can be created. On the other hand, with 240v POWER (AUS) coiling your power cables can create induction, but at <10a max running though it and less than 50+ coils the induction is so small its irreverent.

Going along with this, a very relevant topic is the co-location of power and Ethernet. Try and always keep AC power cables and data cables(Ethernet) separated by about 20cm to help reduce "AC noise" being imposed on the data lines.
Most, if not ALL, power companies impose a certain frequency onto the power line to tell "smart" meters when "peak" and "off peak" times are. Add that to the 50Hz that Aussie AC runs at and you can get a LOT of interference. BUT any CAT5e or greater cables have shielding for this exact reason.

Just my 2c worth
 

[MICRO]

HAHAHA this is gold. Coiling your cables (Ethernet or power) wont do anything real negative. Ethernet cable coiled RARELY creates induction as induction requires an ALTERNATING current. Ethernet is a dc voltage with 1's and 0's modulated onto it. Normally a square waveform. Hence no/extremely little induction can be created. On the other hand, with 240v POWER (AUS) coiling your power cables can create induction, but at <10a max running though it and less than 50+ coils the induction is so small its irreverent.

Going along with this, a very relevant topic is the co-location of power and Ethernet. Try and always keep AC power cables and data cables(Ethernet) separated by about 20cm to help reduce "AC noise" being imposed on the data lines.
Most, if not ALL, power companies impose a certain frequency onto the power line to tell "smart" meters when "peak" and "off peak" times are. Add that to the 50Hz that Aussie AC runs at and you can get a LOT of interference. BUT any CAT5e or greater cables have shielding for this exact reason.

Just my 2c worth
 

Tnx fkr rly good explanation . I do some electronics , mainly dc but im not am expert. So i still need to hear others people opinions. Do we have here some good thread ablut electronics?

[MICRO]

There is a technique to coil any type of rope, wire, ethernet, extension cord, hose. If done the right way, there should be no harm.

Kinda twist with the material with you index finger and thumb into your left or right hand. I call this a neatly coiled up material.

These ethernet cables are from 2004-2005 CAT5E and still work wonders on my equipment. They've been properly coiled up countless times. Someone in my family actually "pissed me off" coiled it around their back hand and palm one time.



Yellow.

Yeah i coil them like that always , its good technique to use coz its rly easy to un coil (lol) and not get tangled up  .

[gibleh]

There is a technique to coil any type of rope, wire, ethernet, extension cord, hose. If done the right way, there should be no harm.

Kinda twist with the material with you index finger and thumb into your left or right hand. I call this a neatly coiled up material.

These ethernet cables are from 2004-2005 CAT5E and still work wonders on my equipment. They've been properly coiled up countless times. Someone in my family actually "pissed me off" coiled it around their back hand and palm one time.

*image removed to make post smaller

Yellow.
*image removed to make post smaller

You are correct for avoiding PHYSICAL damage to your cables. ALWAYS "free wrap" your cables. In use or in storage. It will prolong there life and makes them so so so much neater 

The damage that OP is referring to is to the equipment that is attached to the cable and not the cable its self. But yours is a great tip to share too. 

[GoogleBit]

IT IS A FACT, that if you are in a building beside train tracks, and you are at the same hight as the powerlines, your network creates a lot of CRC's.

IT IS KNOWN that in the right season for lightning and thunder, a IT technician get's more calls from customers. Some say the damage comes from powerspickes, some believe, it comes from the huge magnetic field around the lightning, which can charge up cables and wires, especially rolled up ones which lie on horizontaly...

SOME BELIEVE, Elvis is still alive... waiting with Jacko on the moon, till DOGE arrives :-)

It is still theory (Beta) what exactly a magnetic field is...

[MICRO]

IT IS A FACT, that if you are in a building beside train tracks, and you are at the same hight as the powerlines, your network creates a lot of CRC's.

IT IS KNOWN that in the right season for lightning and thunder, a IT technician get's more calls from customers. Some say the damage comes from powerspickes, some believe, it comes from the huge magnetic field around the lightning, which can charge up cables and wires, especially rolled up ones which lie on horizontaly...

SOME BELIEVE, Elvis is still alive... waiting with Jacko on the moon, till DOGE arrives :-)

It is still theory (Beta) what exactly a magnetic field is...

Some say primedice3 beta testing is on the moon , just coz of possibility that rolled cables can destroy its servers. .