EV charging point cable question

Buried direct in plaster will preserve the full "clipped direct" current rating. but chances are you could drop in some conduit or channel without any problem (current handling wise).

Note that it will need to be in a prescribed zone if there is no visible accessory on the inside that might lead one to expect a cable to be there.

(Or it can go within 150mm of a vertical corner without anything visible if required. The alternative would be to protect it with decent steel conduit, or thick capping, or use SWA etc, or bury it more than 50mm deep)

Ah, so buried in plaster is better than conduit from the “de-rating” POV?

It would be within 100mm of a vertical corner so I think it’s okay from that point.

Thanks. Most helpful.

Tim

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Just had a thought. Inside the house it will be well within 150mm of the internal corner. Outside though it would be about 400mm from the nearest external corner. Do the zones apply inside AND outside?

Tim

as long as your walls are at least 50mm thick, the cable on the internal wall will be more than 50 mm from the external wall surface.

Plus you have a visible electrical accessory oputside (the charger) and from what you describe, the cable will be going in horizontally through the wall from internal to externally straight into the charger?

Yup. Its reference method B rather than C:

Outside the house, the cable will be (1) inline with a visible accessory (i.e. the charger), and (2) buried more than 50mm from the surface, so no need to worry.

Its the radius of the bend that would worry me. Brian