The Continuing Saga (and debate) about S.W.A. Cable.

Interesting video, but didn't explain how the cable meets CAT 5 standard with only 2 conductors, when full CAT 5 is 4 pairs, and the minimum that CAT 5 uses is at least 2 pairs (minimum 10BASE-T or 100BASE-T)?


Anyway, no problem, even if different voltage bands, provided all conductors are insulated to highest voltage present (in which case you will effectively have double insulation at the highest voltage).


Already in place in a number of automation, BMS and control cables ... and the pilot wiring in an EV charging cable (charger to vehicle cable), for pilot and optional CANbus.

This cable was designed for EV applications. It comes in four variants. One has a single pair pilot, which is intended for the new brand of variable chargers, where a CT is placed round the phase conductor so the charger / vehicle can adapt its charge rate to the rating of the cutout fuse based on the house load, the other with a 4-pair CAT-5e cable within the sheath, intended for Ethernet plus power. Both of these cables are made in Hi-Tuff and SWA, giving the four types. 


Regards,


Alan.

Thought that was the case ... didn't see the Ethernet variant close-up though.


Agree it's not an issue.


What's more of an issue, is perhaps current transformers that can't guarantee SELV outside enclosures (or their wiring with only basic insulation).

The various types are shown better in this excerpt from the online Yesss catalogue: https://www.yesss.co.uk/search?q=ev+ultra+cable


I have no connection with Yesss, other than as a satisfied customer. 


Regards,


Alan.

Presuming an SWA cable is selected because some of the run is going to be underground, how does that fit with 528.2's requirement to have 100mm separation or a fire retardant (e.g. clay or concrete blocks) partition?

   - Andy.