At first the term Splicing should be cleared, as it is much confusing in case of electrical concept.
In simple words Splicing is the making joint of two piece of electrical wires. Splicing can not be avoided as the insulation breaking of wires is likely to happen.
How to do proper & safe Splicing of electrical cable
As per international electrical standard NFPA-70 (national fire protection association)for splicing there are several codes are directly stated as follows-
NFPA-70 / 110.14 Electrical Connections (B) page 61 – about Splicing of electrical cable
(B) Splices. Conductors shall be spliced or joined with splicing devices identified for the use or by brazing, welding, or soldering with a fusible metal or alloy. Soldered splices shall first be spliced or joined so as to be mechanically and electrically secure without solder and then be soldered. All splices and joints and the free ends of conductors shall be covered with an insulation equivalent to that of the conductors or with an insulating device identified for the purpose. Wire connectors or splicing means installed on conductors for direct burial shall be listed for such use.
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