2 What is the maximum distance of Cat 5e cabling for data transmission?

That depends on what you will be using the cable for.

In general, the higher the frequency of the signal being sent down the cable, the shorter the cable has to be.

The environment of the cable is also important. If the cable is in an electrically noisy environment, it needs to be shorter.

There are various standards that specify the maximum length of a cable. Sometimes it will work (some of the time) if you use a longer piece of cable, but following the standard is much more likely to work correctly all the time.

Some examples from computer networking standars:

For 10BASE-T Ethernet, the maximum length of a cable is 100 meters. Note that this standard was defined for Cat 3 cable, so you'll probably be able to use Cat 5e cable to send the signal further. However, there's no standard specifying how much further - you'll probably have to test it yourself.

For 100BASE-T Ethernet, the maximum length is also 100 meters, but the cable grade is specified as Cat 5 (not Cat 5e). So you might be able to make a longer run work with Cat 5e.

For 1000BASE-T Ethernet, again the maximum length is 100 meters, but now the cable must be Cat 5e. Also, all four pairs of the cable are used, whereas in the other two standards only two pairs are used.

HTH,

Gdunge