Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Verified Answer
  • Locked Locked
  • Replies 14 replies
  • Subscribers 35 subscribers
  • Views 3406 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Earthing CAT6 SWA cable connecting EVSE.

Sparkingchip

Armoured External Cat6 UTP Solid Cable (Price Per Metre) | Cat6 Cable (cablemonkey.co.uk)

When running CAT6 SWA to Electric Vehicle Supply Equipment to provide an internet connect to allow the equipment to be activated remotely using an App or by the electric supplier if the consumer has signed up for a tariff that allows the electric supplier to select the precise charging times should the SWA armour always be earthed at one end only or should it mirror the connection of the CPC or armour of the EVSE supply circuit?

Parents
  • 0

    The cable must not be earthed at both ends, if the charging point has a different earthing arrangement due to PME (own TT for example) ... otherwise, you defeat the object of having TT to get round the PME issue.

    Don't connect the armour to TN at one and and TT at the other certainly. But presumably you could still connect both ends of the armour to the same (TN) earthing system at both ends - e.g. mains SWA (+G/Y core if used) to data SWA (+shield, if used) at the charge point, before the gap to the TT earthing system (all enclosed in an insulating enclosure).

       - Andy.

  • 0 in reply to AJJewsbury

    could and from the EMC point of view, usually should - but be careful that you are not asking a wispy braid to carry large fault currents or diverted neutral related offsets... That is another can of worms.

    Mike.

Reply
  • 0 in reply to AJJewsbury

    could and from the EMC point of view, usually should - but be careful that you are not asking a wispy braid to carry large fault currents or diverted neutral related offsets... That is another can of worms.

    Mike.

Children
  • 0 in reply to mapj1
    mapj1 said:
    could and from the EMC point of view, usually should

    Hi Mike, point being, if you are separating TT to avoid connection to PME, no good connecting it back through the data cable?

    Defeats the object of the exercise ... I already said that for EMC usually both ends is better, but it's not the whole story.

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines