Apw3+ pcie wires getting warm

[fyoung55]

Hey, I have an apw3+ running on 220v and thatbpower cable is fine.  The pcie cables that power the hash boards seem to be getting warm.  Not too hot to touch, but definitely above room temp.  Maybe 80 or 90 F.  Is that OK/normal?

[lrowland21093]

I have an APW3++ running a single 741 and an APW5++ running two 741s.  I just took my laser temperature reader and measured the wires.  
They were all between 85-90F with an air temperature of 65F.   That temp for wires is not going to be a problem.  The insulation on the wires will start to go at about 180F but if the wires get that hot, the PSU would probably fail first    I think the wires are 18AWG (or 16) and can carry a max of 10A each continuously so we would probably have to pull a lot more current through for it to be a problem.

[Steamtyme]

That doesn't sound to bad, the wires are getting warm because they are carrying all the current.

I'm not sure what equipment you are running but if you have extra PCI-e connectors you can spread out the load a little.

For example my PSU has 5 cables that split to 5 PCI-e connectors, so I've spread the load out by using 2 cables per hashboard.

They are all on the same PSU so the only danger is if there is a failure internally with my PSU.

If you don't have the extra connectors you could set up a fan to circulate air over the cables/entire setup to help.

[fyoung55]

yeah, I'm running an s9, I'm re-purposing an old case fan to blow over the wires, better safe than sorry.  I have an IR gun, I'll dig that out and see what we get.

[fyoung55]

Case fan is perfect!  Wires are nice and cool!

[Steamtyme]

Case fan is perfect!  Wires are nice and cool!

Glad to hear it, when in doubt circulate more air lol