The following additions, insertions and changes shall further apply and shall supersede any and all references listed within the national electrical code, 2011 edition, NFPA 70:
General Provision: All new electrical wiring systems or additions to existing to previously constructed systems shall be rigid conduit, intermediate conduit (IMC), electric metallic tubing (EMT) or nonmetallic sheathing cable (Romex). No other form or raceway or system can be used. The use of flexible metallic conduit can be used in existing structures when approved by the electric inspector.
General Provision: All conductors shall be copper, the use of aluminum is not allowed.
Article 314.1 Add the following:
All boxes installed at a conductor splice point, outlet, switch point, junction point or pull point shall be a minimum of 4 x 4 x 11/2 inch steel. Exception โ ceiling fan boxes.
334.10 Type NM, NMC, and NMS shall be approved for single-family homes only.
334.15(D) Type NM and NMC shall not be permitted to be exposed except in unfinished attics, and under-floor spaces.
334.40(D) Add the following:
When type NM or NMC is used, a 12 inch loop shall be left before entering a box or device.
(2013 Code ยง 11-1-10)