Checking a wire if it's one piece or more

[apk2000]

Hello

Say that i had a circuit of a 6mm wire and i want to check of the wire going form the breaker toward the load is one-peice wire NOT two or more wires connected together.

Maybe my question is not common but where i live it's forbidden to join two or more wires in any connection as any circuit has to get power in a wire of one piece,

I know that i can measure the resistivity but i have limited experiences.

The wire is a copper wire and the size mentioned is just an example.

If someone had an idea please assist.

 

[SJD]

Time domain reflectometer.

"A TDR measures reflections along a conductor. In order to measure those reflections, the TDR will transmit an incident signal onto the conductor and listen for its reflections. If the conductor is of a uniform impedance and is properly terminated, then there will be no reflections and the remaining incident signal will be absorbed at the far-end by the termination. Instead, if there are impedance variations, then some of the incident signal will be reflected back to the source."

There's a bit of info at: Cable Fault Location by Baur (TDR Time Domain Reflectometry) - https://www.cablejoints.co.uk/blog/article/tdr-time-domain-reflectometry - maybe someone more familiar will have a better link.

 

[apk2000]

Time domain reflectometer.

"A TDR measures reflections along a conductor. In order to measure those reflections, the TDR will transmit an incident signal onto the conductor and listen for its reflections. If the conductor is of a uniform impedance and is properly terminated, then there will be no reflections and the remaining incident signal will be absorbed at the far-end by the termination. Instead, if there are impedance variations, then some of the incident signal will be reflected back to the source."

There's a bit of info at: Cable Fault Location by Baur (TDR Time Domain Reflectometry) - https://www.cablejoints.co.uk/blog/article/tdr-time-domain-reflectometry - maybe someone more familiar will have a better link.

I would like to thank you for your kind reply .. i will will look at the link you provided while waiting for more replies!

 

[telectrix]

personally i thinkk the only answer is a visual inspection. use a boroscope camera for voids.

 

[pirate]

Presumably this won't work with the uni-directional speaker cable so beloved by hi-fi enthusiasts

 

[apk2000]

personally i thinkk the only answer is a visual inspection. use a boroscope camera for voids.

I would agree with you but i am looking at a circuit that is might be in a building of several floors and installations might be on the ceiling or under the floor!

Where i live electrical installations has different techniques but i liked the idea of using a Borescope which is useful for other means of connections!

We use concrete blocks to build houses and for building electricity installatoins it's more difficult to sense the condition of cables running in conduits under plaster and rigid surfaces!

Thanks for the help

 

[apk2000]

Presumably this won't work with the uni-directional speaker cable so beloved by hi-fi enthusiasts

I agree with you but does speaker cables are made out of copper?
Do you have a way to test speaker wires? please tell me if so,

I missed the point of mentioning that the installation i was asking about is for GPOs and similar voltages!

Thank you

 

[pirate]

Sorry, I was being a bit "tongue in cheek" when I posted that comment. Hi_Fi enthusiasts sometimes get carried away with fancy-sounding technology, and uni-directional speaker wires is a classic example. yes, the speaker cables are copper, and there is the suggestion that the special copper used in the speaker cables conducts in one direction only, leading to a cleaner, clearer sound...
It's copper! It conducts both ways, no matter what the Hi_Fi specialists tell you.

 

[apk2000]

Sorry, I was being a bit "tongue in cheek" when I posted that comment. Hi_Fi enthusiasts sometimes get carried away with fancy-sounding technology, and uni-directional speaker wires is a classic example. yes, the speaker cables are copper, and there is the suggestion that the special copper used in the speaker cables conducts in one direction only, leading to a cleaner, clearer sound...
It's copper! It conducts both ways, no matter what the Hi_Fi specialists tell you.

Thanks mate .. that was great answer!

 

[telectrix]

Black Sabbath on loud. who cares if the sound quality is 0.01% below whatcould be acheived?

 

[pirate]

Black Sabbath just get better the louder you listen!

 

[apk2000]

Black Sabbath on loud. who cares if the sound quality is 0.01% below whatcould be acheived?

Some technicians with less experiences may disagree with you!

 

[apk2000]

Black Sabbath just get better the louder you listen!

Can;t disagree with you!