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the foundation. The basic excavation is suitable for installation of charging station without
safety arches. Dimensions of the basic excavation are 42 cm x 55 cm, with the minimum depth
of 60 cm. One of the requirements of basic installation is to carefully observe that the height of
the upper edge of foundation is precisely aligned with the height of surface finish in the area
around the charging station.
4.3 Construction of foundation
The procedure for the construction of foundation and placement of the underground anchoring
element into concrete is as follows:
1. According to the alignment of the power cable, the location of the installation pipe is
determined. The pipe is placed into the foundation and used to connect the charging
station to the network (see Figure 15). It is recommended that the installation pipe ends
on the lateral side of the foundation and not beneath the foundation. The bending
radius of the power cables must be taken into account when placing the installation
pipe. The dimension of the pipe depends on the number and diameter of power cables
which will be inserted into the pipe. In the case of clustering of charging stations in the
same area, it must be taken into account that two power cables will be inserted into the
installation pipe. The size of the opening at the top of foundation enables the
installation of two installation pipes when the clustering of charging stations is executed
in the opposite direction to the location of the current connection,
2. The concrete base is placed into the construction pit to the level that enables the top of
the underground anchoring element to reach the desired final height. The final height in
this case is the level of surface finish after completed works (for example the top level of
paving stones, tiles or kerb). The concrete base is levelled so that the anchoring element
can be vertically aligned. It is of utmost importance that the anchoring element is
aligned very precisely. Lean concrete mix should be used for the concrete base,
3. The installation pipe is inserted through the opening of the underground foundation
anchor and attached with a wire to prevent it from slipping into the foundation during
concrete works. The installation pipe, which has been cut to its final length, must be
clogged on both ends with paper or similar material, so that the concrete cannot enter
the pipe,
