Unless otherwise speci ed, cables and insulated wires should only used for the conductance and distri-bution of
electricity.
The uence all the factors given the following sections must considered interrelationship and not on
an individual basis.
General requirements
The choice the selection cables and insulated wires should such that the voltages and currents prevailing the
operating equipment, system device used shall meet all operating conditions expected. The usable life permanently installed cable for power distribution longer than that exible cable.
Selection cables and insulated wires
The choice the selection cables and insulated wires shall made such that these are suitable for the operating
conditions well for all other external uences and compliance with the respective protection class.
Note: The colour black provides higher degree protection than other colours.
a) Operating conditions are, for example:
– voltage
– protective measures
– grouping cables
– current
– method installation
– accessibility
b) External uences are, for example:
– ambient temperature
– presence rain, water vapour the accumulation water
– presence corrosive, contaminating other chemical substances
– mechanical stresses (such holes sharp edges from metal constructions for example)
– animal world (such rodents)
– plant world (such fungal growths)
– irradiation (such sunlight).
The cables shall constructed, installed, protected, used and maintained prevent danger far its reasonably
practical. acceptable service life will
be attained compliance with the limiting conditions, depending the circuit designed under ned conditions for
use. The prevention danger persons and property
during usage and storage operating equipment means safety include the detection stress, risk and potential
faults, well their recti cation limitation minimum risk level.
Limiting conditions
The limiting conditions the DIN VDE and speci cations shall taken into account.1130
Fundamental requirements
The cables and insulated wires shall adequate safety for proper use the intended manner such that these do
not constitute any unacceptable risk life damage property.
SAFETY REQUIREMENTS THE USE CABLES AND
INSULATED WIRES
