Alienware 17 DC cable

Hi:

Since the dc connector has burned several times, I decided to build my own dc cable. Im planning to use ethernet cable (solid and bigger cable, so less heat). Is there any problem with impedance or any other electrical/electronical consideration?

Your opinions are greatly appreciated

 

i think you are going to need another soldering method, the normal iron is not capable to hold that heat. I dont know if out there you can find a stronger soldering material

 

Don't do that, lan cable is not suitable to transfer that much power. You need cables that can hold at least 300watt of power without heating up and melting.

ethernet cables are not made for any high power transfer to begin with. YOu have to think of cables that you see on power supplies for example.

 

What cable size would you recommend?

 

Its thicker but these cables are used to power graphic cards. depending on the amount of pairs you make is the amount of watt it can take.

But the stock cable should be sufficient. I would let AW look into that.

 

It's the amperage that matters when determining cable gauge, not wattage. How many amps will be going through that cable and what length do you plan to make it?

 

It can be both. But regarding powersupply cables they often describe their capability in wattage not amperage. Like with graphic cards pci express cables 150 watts for 6pin 300 for 8pin for example.

He is talking about making a replacement for the internal DC in cable that connects the DC in port with the motherboard.

 

Cables are not rated in watts.

 

cable pairs inside of pc's are.

I know each individual wire has a rating for amperage. But yeah if you want to know the amperage, make the calculation.

 

Not in watts, cables are rated for current in amps.

For example, say you are in the U.S where the voltage is 120VAC and you have a 2000W appliance: that appliance requires a cable that is rated for at least 16 amps. Now let's say you are in Europe where the voltage is 240VAC and now you have a 4000W appliance, that will also require a cable that is rated for 16 amps. Why? Because the voltage has changed, but the cable is still getting the same current (16A) it is rated for.

If by cable pairs you mean a bunch of wires wired in parallel from a single voltage source, you are increasing the cross section of the conductor when these individual wires are combined (to form one bigger cable), so the amperage rating for that cluster of cables will increase respectively.

Hope this helps

https://www.bluesea.com/resources/1437

 

I understand that but this is inside a xomputer system where the voltage is not variable. Again they often rate cables in watts for internal computer purposes where voltage is not variable.

Anyway. Very offtopic.

But ethernet cabls are not ment for power supply usage.

 

I dont want to seem stubborn but, the stock cable is rated 300V 105C 26AWG (7 threads) and the lan cable is a solid wire copper (larger diameter). What if I cover the lan cable with thermofit (125C). Just for clarification, Im not going to use the lan cable as whole, Im going to use each inner cable separately.