Just a note, remember to include in your costs your time to decide and impliment .

this is insane part... I am desperate of it. but how else make it done?

personaly, id be using 4 separate cables , of different colours .

like 4 single cores?

 

It seems that things have changed. One detail not mentioned is that often, for a given wire gage, more strands costs more. Usually solid wire costs the least. Solid core wire can pull thru a conduit with ONE bend OK, seven strands pulls much better. 20 or 21 strand wire costs more. and if it needs to be terminated under a screw, lugs may be required. For applications with vibration but not motion present, only stranded wire is acceptable.
Some types of insulation are much easier to pull than others.

 

this is insane part... I am desperate of it. but how else make it done?


like 4 single cores?

what do you mean by a core

 

what do you mean by a core

I would use four CONDUCTOR (core) cable because it will be simpler to work with, and a bit less susceptible to interference pickup.AND it might possibly cost less. than four similar wires.

 

I would use four CONDUCTOR (core) cable because it will be simpler to work with, and a bit less susceptible to interference pickup.AND it might possibly cost less. than four similar wires.

probably true a single cable is easier,
worry is the colour coding could mean something to some one else.
also, 4 separate cables are more flexible for a flexible conduit
so as I say, id normaly use separate cables.
@MisterBill2 , refering to the posters 4 core question, you say a singer cable with 4 cores would be less susceptible to interference pickup, can you expand on the though please.

 

probably true a single cable is easier,
worry is the colour coding could mean something to some one else.
also, 4 separate cables are more flexible for a flexible conduit
so as I say, id normaly use separate cables.
@MisterBill2 , refering to the posters 4 core question, you say a singer cable with 4 cores would be less susceptible to interference pickup, can you expand on the though please.

The reasoning behind that assertion is that in a single, multi-conductor bundle, any impinging field, either electrostatic or magnetic, would produce only a common mode voltage in any pair of conductors because of their closer proximity. Non-bundled conductors may have different voltages induced because of being spaced farther apart in the impinging field. At least, that is the logic that has lead to the almost universal use of twisted pairs cables for low level audio applications. Rejecting common mode voltages while receiving the differential mode voltage is a mature process.
As for interpreting the "color code" , I have not come across any "code", but only conventions followed in a single application. The colors in a single multiple conductor cover are only to identify which wire is which, avoiding the need for continuity checking.

Mains voltage power cords are the exception, with a fairly standard set of colors identifying "HOT"(line), Neutral, and safety ground..

 

The reasoning behind that assertion is that in a single, multi-conductor bundle, any impinging field, either electrostatic or magnetic, would produce only a common mode voltage in any pair of conductors because of their closer proximity. Non-bundled conductors may have different voltages induced because of being spaced farther apart in the impinging field. At least, that is the logic that has lead to the almost universal use of twisted pairs cables for low level audio applications. Rejecting common mode voltages while receiving the differential mode voltage is a mature process.
As for interpreting the "color code" , I have not come across any "code", but only conventions followed in a single application. The colors in a single multiple conductor cover are only to identify which wire is which, avoiding the need for continuity checking.

Mains voltage power cords are the exception, with a fairly standard set of colors identifying "HOT"(line), Neutral, and safety ground..

@MisterBill2
totaly agree that for differential signals, a twisted pair arrangement is best,
but I understood @thor21 and maybe you could clarify, was not using differential signaling , hence my question as to your assertion to @thorabout the noise pickup.

as for colour coding , @thor21 was looking at using 4 core mains wiring at one time , my concern with that is for otheres in the future, 10 years time, some one sees 4 core mains cable and would be expecting to see mains voltage, with the green / yellow being the safety earth.

 

Four conductor cable used for mains circuits applications is entirely different in appearance and in how it is constructed. The common application is for "three-way" lighting switching. In that application, red and black are the alternately connected "hot" feeds to the second switch, and the white neutral and the green safety ground just pass thru the junction box.
And in posy #27 is the first time that I have seen any mention of MAINS use for the wires in the walls. I did see one mention of 50 volts, with no hint of the application. Mains power distribution is an entirely different world. Different rules and regulations and a whole set of different practices and requirements.

 

Four conductor cable used for mains circuits applications is entirely different in appearance and in how it is constructed. The common application is for "three-way" lighting switching. In that application, red and black are the alternately connected "hot" feeds to the second switch, and the white neutral and the green safety ground just pass thru the junction box.
And in posy #27 is the first time that I have seen any mention of MAINS use for the wires in the walls. I did see one mention of 50 volts, with no hint of the application. Mains power distribution is an entirely different world. Different rules and regulations and a whole set of different practices and requirements.

I think your missing the question there @MisterBill2

what about the

"
@MisterBill2
totaly agree that for differential signals, a twisted pair arrangement is best,
but I understood @thor21 and maybe you could clarify, was not using differential signaling , hence my question as to your assertion to @thor21 about the noise pickup
"

 

I explained the noise pickup mechanism in post #27. It seems that a lot of folks also choose twisted pair cable, with shielding, based on how much of it is used for sound and data signals at most levels above "consumer stuff," where cost is a primary concern.
And, again, I was not aware that the wiring under discussion was power distribution wiring. I should have seen the relations to that previous thread. My error.