i herd that 2 cables in a network (ethernet) cable just carry power. and was wondering which 2 colours or on what side the 2 are.also how much voltage they carry.was hoping to make an easy router mod to stop with the head issues.cheers.
Yes, voltage does run through Ethernet cables. Its referred to as PoE (Power over Ethernet) ethernet cable has 4 twisted pairs. Out of 4 pairs: * 2 pairs are used for data transfer, * 2 pairs are spare and not used. It allows the powering device to use a voltage between 36–57 V DC, though the nominal voltage is 48 V, over two of the four available pairs
you did not state anything that will help anyone tell you that imformation you have to know what kind it is and it still would be very hard to just tell you the voltage and everything like that
u mean wires by cables ?!
Generally there should NEVER be power on cat5, this breaks the low voltage cable regulations of almost every country in the world. The 1 and 2 pair and the 3 and 6 pair are normally data for network. Th 4 and 5 are normally for telephone and should not really be used at the same time. Most network equipment now short circuits this pair as protection against the much higher voltage (up to 90v) of telephone lines, and continuous shorting of these lines can cause equipment damage. The 7 and 8 pair are generally unused, but are sometimes used for rf to rj45 baluns used to pass video down the line. It is possible to use all these on one cable, but makes absolute nonsense of the purpose of structured cabling.
