UL COPYRIGHTED MATERIAL –
NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
DISTRIBUTION WITHOUT PERMISSION FROM UL
11.1.1.9 To determine whether wiring is prevented from being forced against live parts or sharp edges, a
trial installation is to be made using only ordinary care. The system used for the test is to be representative
of the various constructions and installation methods that may be employed.
11.1.1.9 effective April 13, 1993
11.1.2 Wiring terminals and leads
11.1.2.1 A field-wiring terminal is considered to be a terminal to which power supply or other permanent
connections will be made in the field when the converter or inverter is installed.
11.1.2.1 effective April 13, 1993
11.1.2.2 The field-wiring terminals or leads shall be acceptable for the connection of conductors having
an ampacity acceptable for the rating of the converter or inverter.
11.1.2.2 effective April 13, 1993
11.1.2.3 A wiring terminal shall be provided with a soldering lug or pressure terminal connector securely
fastened in place, for example, firmly bolted or held by a screw. A wire-binding screw may be employed
at a wiring terminal intended for connection of a 10 AWG or smaller conductor if upturned lugs or the
equivalent are provided to hold the wire in position.
11.1.2.3 revised October 15, 2004
11.1.2.4 A wiring terminal shall be prevented from turning or shifting in position by a means other than
friction between surfaces. This may be accomplished by two screws or rivets; by square shoulders or
mortises; by a dowel pin, lug, or offset; by a connecting strap or clip fitted into an adjacent part; or by an
equivalent method.
11.1.2.5 A wire-binding screw at a field-wiring terminal shall not be smaller than No. 10.
Exception No. 1: A No. 8 screw may be used at a terminal intended only for the connection of a 14 AWG
conductor.
Exception No. 2: A No. 6 screw may be used for the connection of a 16 AWG or 18 AWG control-circuit
conductor.
11.1.2.5 revised October 15, 2004
11.1.2.6 A wire-binding screw shall thread into metal.
11.1.2.7 A terminal plate tapped for a wire-binding screw shall be of metal not less than 0.050 inch (1.27
mm) thick.
Exception: A plate not less than 0.030 inch (0.76 mm) thick is acceptable if the tapped threads have
adequate mechanical strength.
11.1.2.8 There shall be two or more full threads in the metal of a terminal plate. The metal may be
extruded at the tapped hole to provide at least two full threads.
OCTOBER 15, 2004 UL 458 23
To Next Page
Loading...