Directive of the European Parliament and of the Council of 12 December 2006 laying down technical requirements for inland waterway vessels and repealing Council Directive 82/714/EEC (2006/87/EC) (repealed)

Article 9.05 Earthing

1. Systems under a voltage of more than 50 V need to be earthed.

2. Metal parts that are open to physical contact and which, during normal operation, are not electrically live, such as engine frames and casings, appliances and lighting equipment, shall be earthed separately where they are not in electrical contact with the hull as a result of their installation.

3. The casings of mobile power consumers and portable devices shall, during normal use, be earthed by means of an additional earthing conductor that is incorporated into the power cable.

That provision shall not apply where a protective circuit-separation transformer is used, nor to appliances fitted with protective insulation (double insulation).

4. The cross-sections of the earthing conductors shall be not less than given in the following table:

Cross-section of outside conductors(mm2)	Minimum cross-section of earthing conductors
	within insulated cables(mm2)	fitted separately(mm2)
from 0,5 to 4	same cross-section as that of the outside conductor	4
more than 4 to 16	same cross-section as that of the outside conductor	same cross-section as that of the outside conductor
more than 16 to 35	16	16
more than 35 to 120	half of the cross-section of the outside conductor	half of the cross-section of the outside conductor
more than 120	70	70