For xed installation, least one cable
should used for “normal” stress. for greater ease installation, the conductor may Class according DIN VDE 0295. This can caused the natural effects ageing the
physical properties the materials used for the insulation sheath and jacket which can become brittle with time.
The types structures for PVC-sheathed cables for short-term use outdoor applications should not however be
operated conditions others than these, e.
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Flexible cables are made conductors consisting multiplicity small wires and are either stranded bunched.
Flexible cables should used for connections mobile operating equipment.g.
These should not damaged any strain relief clamping device points the permanent installation.
Cables should not buried directly the earth and should fastened suitable means while making allowance
for the maximum spacing between xing points. The length the connecting cable
must chosen such that response the short-circuit protecting device assured. The cable length should as
short needed for the practical application reduce the risk mechanical damage.
On account their characteristics, this also applies particular for PVC-sheathed and/or jacketed cables.g. temperatures lower than the speci temperature. Multicore control
cables shall protected against permanent bending stress.
The cable should not damaged any mechanical restraint used for its support Cables which have been use over
longer periods time may become damaged movement.
Flexible cables should not placed under oorcoverings carpets because there the danger that this can cause
thermal insulating effects, leading increased temperatures, that the weight furniture from traf can damage
the cables.
Except for cables for connections permanently installed operating equipment, exible cables should not be
permanently xed (with the exception heavy-duty cable designs for permanent installation temporary facilities)
unless these are contained enclosure affording mechanical protection.
Flexible PVC-sheathed cables are not necessarily suitable for processing further spiral cables.
Flexible cables should not subjected excessive straining from tensile forces, compression, twisting kicking.
Cables should not contact with, close to, hot surfaces the cables are not intended for such conditions.
Flexible PVC-sheathed cables are not suitable for permanent use outdoor applications. Abrasion, notches and sharp bends are avoided.
These cables meet either Class Class DIN VDE 0295. certain
circumstances, e.
SAFETY REQUIREMENTS THE USE CABLES AND
INSULATED WIRES
.
Flexible cables should neither contact with, close to, hot surfaces nor extend into the immediate vicinity of
such, they are not suitable for this purpose. The
suitability exible cables for outdoor applications, either for short periods continuous operation, ned the
tables the 516 and DIN VDE Part 300. This
applies particular the point entry into the device, and strain relief the point connection the xed wiring. cases applications
where exible PVC-sheathed cables are permissible, the use spiral cables can considered for shortening the
effective length.1131
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Requirements for cables
– for permanent installation, and
– for exible applications
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In the normal case, cables for permanent installation have solid single wire stranded conductors
