(A) Connections. Terminal parts by which wire connections are made shall insure thoroughly good connections, even under hard usage. For all wires larger than No. 10, lugs, into which the connecting wires shall be soldered, or approved solderless connectors shall be provided. For wires smaller than No. 8, the parts to which wire connections are made shall securely grip the conductors. Heavy clamps or screws with terminal plates having unturned lugs, or solderless connectors, may be used.
(B) Splicing. Wires shall be so spliced or joined as to be mechanically and electrically secure without solder. The joints shall then be soldered unless made with an approved splicing device, and shall be covered with an insulation equal to that on the wires.
(C) Soldering. Standard wires shall be soldered together before being fastened under clamps or binding screws.
(D) Materials applicable. This chapter shall be understood to treat only approved materials, devices, fittings, appliances, machinery, apparatus, and methods.
(1977 Code, § 3-15-5) Penalty, see § 10.99