Faulty Ethernet cable?

[WSH]

Ah, good.  As I said, I looked up SWA cable later and was a bit concerned they were in the same duct.

I’m retired and it’s been a long while but I seem to recall the recommended minimum separation for unshielded and power cables is 8” and for shielded is 2”.  A lot depends on the voltage though and I think that was for above 415V.

[WSH]

A further thought has just occurred.  I take it that cable has been wired to TIA 568B standard?  A straight through or crossover should both work with modern kit.

It's very strange that it tests OK but you're not getting a connection at all.

[pddco]

@WSH  If it’s SWA power cable then wouldn’t the armour strands  be bonded to the CPC (earth) and therefore perhaps acting as a basic screen of some sort in any case? Hopefully the OP will get it sorted after reterminating. 

[WSH]

Interference from mains would screw the performance up, it wouldn't stop it working.  I was more concerned about the safety aspect but if they are in separate ducts it should be fine.

[SwanseaMick]

Have you connected the cable correctly?
It may seem a silly question (I don’t know your level of expertise),  but as the cable is in twisted pairs, it is important that the correct pairs go to the correct pins to avoid distortion. It is not case of pair 1 goes to pins 1&2, pair 2 goes to pins 3&4 etc 

Your end to end tester may simply be telling you that pin 1 is connected to pin1, and pin2 to pin2 etc, it may not be telling you if you have crossed pairs.

I apologise if I’m stating the obvious

[WSH]

I did ask earlier if it is wired to 568B.

Or to clarify:

Pin          Colour

1             Orange&white

2             Orange

3             Green&white

4             Blue

5             Blue&white

6             Green

7             Brown&white

8             Brown

[wheeshty]

Hi yes I used this wiring schedule. 

I’m away on holiday for a week now so I will change the RJ45 ends when I get back and report how it goes. 

Thank you for the help

[wheeshty]

Hi all,

Thank you all for the helpful advice.

Although I'm slightly ashamed to admit it, I must come clean - 

An electrician friend replaced the RJ45 ends today and lo' and behold the cable works now!

Best wishes

[WSH]

Yes, doing it well is a bit more tricky than most people realise.

Good of you to put your hand up though.  All's well that ends well.