how could i power a light with a tv coax cable?

>>1125321
Could you elaborate on why exactly you want to do this and what your TV offers in Connections? I really can't imagine a situation where it wouldn't be more practical to use another power source.

>>1125321
>>>1125321
>Could you elaborate on why exactly you want to do this and what your TV offers in Connections? I really can't imagine a situation where it wouldn't be more practical to use a "different" power source.

>>1125423
>>>1125321 (OP)
>>>>1125321 (OP)
>>Could you elaborate on why exactly you want to do this and what your TV offers in Connections? I really can't imagine a situation where it wouldn't be more practical to use a "different" power source.

>>1125321 (OP)
>>>1125321 (OP)
>Could you elaborate on why exactly you want to do this and what your TV offers in Connections? I really can't imagine a situation where it wouldn't be more practical to use a "different" power source.

>>1125321
Connect the common and live wire to each end of the copper coax and the GFI to the coax shield.

This can sometime trip the breaker but coax self limits current so go ahead and short the breaker.

>>1125321
Tv cables can carry a dc bias e.g. to power a masthead amplifier. One of these systems could be modified to power a very small lamp. Satellite receivers use similar thing to power lnb at the dish.
Nothing to stop you using tv coax for mains as long as you follow the relevant local regulations, the most basic universal ones will be overcurrent protection based on the current carrying capacity of the cable and its installation method as well as the voltage rating of any insulating layers between conductors and humans.
The cross sectional area of the shield layer is probably very small which will limit the current carrying capacity.
If you are interested in using coaxial style cable rather than specifically tv cable you might like to look at micc or 'pyro' where multiple bare conductors are insulated with chalk like powder inside a solid rigid copper tube that must be bent during installation. There are also concentric and split concentric cables which aren't really coaxial at all but could be called similar.