25
- Check whether the earth resistance is lower than 100. When
a circuit breaker is installed which can interrupt the electric
circuit in case of a short circuit, the admissible earth resistance
can be 30 ~ 500.
26
Earth terminal
27
Distribution
board
Figure 26: when using only the earth terminal.
Figure 27: when earthing the electric panel.
6.7 HOW TO CONNECT EXTENSION CABLES.
1. Prepare the following instruments:
Tools Crimping pliers Connection sheath (mm) Electrical tape Contraction sheath (mm)
Specications MH-14 20x ø 6.5 (HxOD) Width 19 mm 70x ø 8.0 (LxOD)
Shape
2. As shown in gure 28, strip the screen from the rubber and
from the wire of the power cable.
- Strip 20 mm the cable screening from the preinstalled sheath.
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