Electrical Connection
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After the cable passes through the fastening head, fireproof putties shall be
applied to seal the joint tightly to prevent water vapor from entering.
Figure 4-8 Apply fireproof putties
After tightening the fastening head, watertight sealants shall be applied on
its inner surface and outer surface to avoid loosening or prevent water from
entering.
Figure 4-9 Apply watertight sealants
