3.4.5 - Direct contact
protection
The methods of preventing direct contact
are mainly concerned with making sure that people cannot
touch live conductors. These methods include:
1.
- the insulation of live parts - this is the standard
method. The insulated conductors should be further protected
by sheathing, conduit, etc.
2.
- the provision of barriers, obstacles or enclosures
to prevent touching (IP2X). Where surfaces are horizontal
and accessible, IP4X protection (solid objects wider than
1 mm are excluded - see
{Table 2.4}), applies
3.
- placing out of reach or the provision of obstacles
to prevent people from reaching live parts
4.
- the provision of residual current devices (RCDs)
provides supplementary protection
{5.9} but only when contact is from a live part
to an earthed part.
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