Ungrounded Distribution Panel

[Jim Kathy]

110.14 Electrical Connections. Because of different characteristics
of dissimilar metals, devices such as pressure
terminal or pressure splicing connectors and soldering lugs
shall be identified for the material of the conductor and
shall be properly installed and used. Conductors of dissimilar
metals shall not be intermixed in a terminal or splicing
connector where physical contact occurs between dissimilar
conductors (such as copper and aluminum, copper and
copper-clad aluminum, or aluminum and copper-clad aluminum),
unless the device is identified for the purpose and
conditions of use. Materials such as solder, fluxes, inhibitors,
and compounds, where employed, shall be suitable for
the use and shall be of a type that will not adversely affect
the conductors, installation, or equipment.

The only way to make these connections compliant with the NEC, is by use of NOALOX or equivalent. Unless these connectors are rated COPALUM.

[Robert Meier]

Originally Posted by Jim Kathy

110.14 Electrical Connections. Because of different characteristics
of dissimilar metals, devices such as pressure
terminal or pressure splicing connectors and soldering lugs
shall be identified for the material of the conductor and
shall be properly installed and used. Conductors of dissimilar
metals shall not be intermixed in a terminal or splicing
connector where physical contact occurs between dissimilar
conductors (such as copper and aluminum, copper and
copper-clad aluminum, or aluminum and copper-clad aluminum),
unless the device is identified for the purpose and
conditions of use. Materials such as solder, fluxes, inhibitors,
and compounds, where employed, shall be suitable for
the use and shall be of a type that will not adversely affect
the conductors, installation, or equipment.

The only way to make these connections compliant with the NEC, is by use of NOALOX or equivalent. Unless these connectors are rated COPALUM.

I don't see how that section requires the use of an anti-oxidant paste with aluminum conductors. The next section has the pertinent information. If the termination is not listed for use with aluminum conductors you cannot use it, anti-ox paste or not.

110.14 Electrical Connections.
Because of different characteristics of dissimilar metals, devices such as pressure terminal or pressure splicing connectors and soldering lugs shall be identified for the material of the conductor and shall be properly installed and used. Conductors of dissimilar metals shall not be intermixed in a terminal or splicing connector where physical contact occurs between dissimilar conductors (such as copper and aluminum, copper and copper-clad aluminum, or aluminum and copper-clad aluminum), unless the device is identified for the purpose and conditions of use. Materials such as solder, fluxes, inhibitors, and compounds, where employed, shall be suitable for the use and shall be of a type that will not adversely affect the conductors, installation, or equipment.
FPN: Many terminations and equipment are marked with a tightening torque.
(A) Terminals. Connection of conductors to terminal parts shall ensure a thoroughly good connection without damaging the conductors and shall be made by means of pressure connectors (including set-screw type), solder lugs, or splices to flexible leads. Connection by means of wire-binding screws or studs and nuts that have upturned lugs or the equivalent shall be permitted for 10 AWG or smaller conductors.
Terminals for more than one conductor and terminals used to connect aluminum shall be so identified.

[Jeffrey R. Pope]

Originally Posted by Robert Meier

I don't see how that section requires the use of an anti-oxidant paste with aluminum conductors.

It doesn't. It simply says if you DO use it, it must be suitable for its purpose.

Materials such as solder, fluxes, inhibitors, and compounds, where employed, shall be suitable for the use and shall be of a type that will not adversely affect the conductors, installation, or equipment.

Most panels have terminals that are listed for use with both copper and AL. I don't think I've ever seen a panel listed for CU only.

[Robert J. OConnor]

Keep in mind that terminals listed for use with AL wire, are typically not listed for use with 1960's era "old technology" AL wire ... unless they are special AL-CU connectors like the AlumiConn Lug Connectors.