Can an unused cable break in?

Connecting to the AC Mains Supply Connect the socket on the AC Power cable to the AC Power inlet d on the rear panel of the CD t. Now connect the cable to a suitable AC power point. 

There is no mains power switch on the CD t. To switch off the mains supply to the CD t remove the plug from the wall outlet. For this reason, ensure that the plug is easily accessible when installing the unit

https://www.cyrusaudio.com/wp-content/uploads/2018/10/Cyrus-CD-t-handbook-en.pdf    


For burning in a power cord it will take for ever if the connected load is a CD transport.  It could take many months. It will burn in a lot faster if it is connected to a load like a dehumidifier or refrigerator. ( Make sure the ampacity rating of the cord is equivalent to 14 gauge wire.)  

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rvpiano OP1,748 posts06-12-2021 12:17amJea48,

There is definitely an on/off push switch on the front panel of the
CD t accessible by the remote control
It could be that I have an older model.

@ rvpiano


What does the switch control? AC Mains power? Or maybe electronics power?

Age of unit?

I have an old ARCAM ALPHA 9 CDP made in the late 1990s. It has a push button on the front panel too. It doesn’t control the AC mains power to the power transformer of the CDP or possibly the DC power supply.

The ARCAM has an oversized power transformer located at the rear right hand side of the unit. The top metal cover above the transformer runs warm to the touch whether the push button is in the on or off position. There is no doubt the power transformer is energized when the power cord is plugged into the wall outlet.
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It is considered that some of the long time period it takes for some particular cables to burn in is the 'burn in' of Teflon dielectrics.

Some cables might be 100 hrs and some might be 500 hrs. the 500hr burn in ones , when looked at closely, tend to show up as having Teflon dielectrics involved in their construction.

@ teo_audio

And why is that?

Because the signal energy actually travels down the conductors in the spaces between the wires through the dielectric.
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Voltage is a differential. It is in other words measured between two things. Across a circuit. Without which (a complete circuit) there is no voltage, no amperage, no capacitance, no nothing. (Try buying a meter that can read voltage, resistance, capacitance, inductance- you name it - without being connected to anything.)

You don’t need a closed circuit to have a difference of potential, voltage.
If you connect a pair of wires to a source at the end or anywhere along the pair of wires the difference of potential exists.

Install a switch in series with one of the lines. When the switch is open the difference of potential will be broken, opened, only on the load side of the switch. Ahead of the switch the potential is not affected. The potential still exists.

The Cyrus CD transport Power supply is connected directly to the AC mains. Not switched. The switch on the face of Cyrus CD transport is down stream of the power supply. The switch does not kill power to the power supply.

Plugging a regular power cord into a wall outlet with nothing (no load) connected to it will do nothing for burn-in of the cable. Does a difference of potential exist at the IEC connector if the wall outlet is live? Yes. But without a connected load there is not a current. No energy is being consumed.
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rodman999995,038 posts

06-13-2021
10:25am

@jea48 - "You don’t need a closed circuit to have a difference of potential, voltage.
If you connect a pair of wires to a source at the end or anywhere along the pair of wires the difference of potential exists."
Isn’t that why these work? https://www.fluke.com/en-us/product/electrical-testing/basic-testers/fluke-2ac

Yes. Though the no contact voltage tester actually is measuring the electric field around the Hot Ungrounded conductor. The tester works on capacitance. When you hold the tester in your hand your body is ground. You can be totally insulated from an EGC, (Equipment Grounded), object and the tester will still work.


https://voltstick.com/how-to-av/videos-and-blogs/how-does-voltstick-work
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rodman999995,056 posts

06-13-2021
12:12pm

"When you hold the tester in your hand your body is ground." Been using those for decades and always believed that was the case. Thanks for the confirmation/insight/link (filling in the blanks)!

I would never use it to verify the circuit is de-energized if you are going to work on the circuit.

FWIW, the no contact voltage tester isn’t really connected between the hot and neutral or EGC, or any reference grounded object, of the circuit. There is not an actual connection from the source Hot wire and a return through the human body back to the source.
Without a closed circuit path how could there possibly be an electric charge flow, current.
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