An electrically powered vehicle comprising: - a power converter, - a power consumption device, - electrical connection means between the power converter and the power consumption device, and - common-mode protection means, the electrical connection means between the power converter and the power consumption device comprises phase electrical conductors and the common-mode protection means comprises accompanying earth electrical conductors running along the phase electrical conductors, each accompanying earth electrical conductor comprising two ends electrically connected respectively to an earth of the power converter and to an earth of the power consumption device, each accompanying earth electrical conductor being a metal braid or an electrical cable, each accompanying earth electrical conductor being free of electrically conductive shielding, the vehicle comprising a first car and a second car each comprising a body, the power converter being carried by the first car, the power consumption device being carried by the second car the first car comprising a traction box incorporating the power converter and the second car comprising a metal frame supporting the power consumption device, each accompanying earth electrical conductor connecting the traction box to the metal frame which each form an earth, the electrical phase conductors and the accompanying earth conductors being positioned at a height greater than 80% of the height of the bodies, the distance separating the electrical phase conductors and the accompanying earth conductors being less than 1 metre. - a power converter, - a power consumption device, - electrical connection means between the power converter and the power consumption device, and - common-mode protection means, the electrical connection means between the power converter and the power consumption device comprises phase electrical conductors and the common-mode protection means comprises accompanying earth electrical conductors running along the phase electrical conductors, each accompanying earth electrical conductor comprising two ends electrically connected respectively to an earth of the power converter and to an earth of the power consumption device, each accompanying earth electrical conductor being a metal braid or an electrical cable, each accompanying earth electrical conductor being free of electrically conductive shielding, the vehicle comprising a first car and a second car each comprising a body, the power converter being carried by the first car, the power consumption device being carried by the second car the first car comprising a traction box incorporating the power converter and the second car comprising a metal frame supporting the power consumption device, each accompanying earth electrical conductor connecting the traction box to the metal frame which each form an earth, the electrical phase conductors and the accompanying earth conductors being positioned at a height greater than 80% of the height of the bodies, the distance separating the electrical phase conductors and the accompanying earth conductors being less than 1 metre. the electrical connection means between the power converter and the power consumption device comprises phase electrical conductors and the common-mode protection means comprises accompanying earth electrical conductors running along the phase electrical conductors, each accompanying earth electrical conductor comprising two ends electrically connected respectively to an earth of the power converter and to an earth of the power consumption device, each accompanying earth electrical conductor being a metal braid or an electrical cable, each accompanying earth electrical conductor being free of electrically conductive shielding, the vehicle comprising a first car and a second car each comprising a body, the power converter being carried by the first car, the power consumption device being carried by the second car the first car comprising a traction box incorporating the power converter and the second car comprising a metal frame supporting the power consumption device, each accompanying earth electrical conductor connecting the traction box to the metal frame which each form an earth, the electrical phase conductors and the accompanying earth conductors being positioned at a height greater than 80% of the height of the bodies, the distance separating the electrical phase conductors and the accompanying earth conductors being less than 1 metre.