to connect similar devices..like one switch to another switch
The difference between a cross cable and a state cable is that a cross cable, or crossover cable, is used specifically to connect two of the same devices.
cross cable
Cross cable.
cross cable
cross sectional area of cable * voltage drop
No, it does not matter if the cable wires cross over. It should not cause any problems if they cross over. However, there are several products that allow them to cross over to add on benefits.
Ethernet cross-over cable
cross over cable
Match up the two ends of the cable. Look closely at the color coding of the pins at both RJ-45 connectors. If the same colors are used in the same pin positions then the cable is a straight-through cable. If they are reversed at both ends then it is a cross-over cable.Sometimes the cable will be marked that way on the outside covering of the cable. Look for the words "cross-over cable".
The 1.5mm and 2.5mm in mains cable refer to the cross-sectional area of the conductors, specifically the copper or aluminum wires within the cable. This measurement indicates the thickness of the wires, which affects the cable's current-carrying capacity and resistance. Generally, a larger cross-sectional area (like 2.5mm) can handle higher electrical loads safely compared to a smaller one (like 1.5mm). Therefore, the choice between these sizes depends on the electrical demands of the application.
1. straigth cable are more effective than the crossover cable....
neither, you need a rollover cable