UL1004-1 Rotating Electrical Machines –General Requirements
First Edition – September, 2008
Second Edition -
September 19, 2012
11.1 The surface of the insulation of a grounding conductor of a flexible cord shall be green with or
without one or more yellow stripes.
11.2 The surface of an insulated lead intended solely for the connection of an equipment-grounding
conductor shall be green with or without one or more yellow stripes, and no other lead shall be so
identified.
11.3 A terminal connector intended for connection of an equipment-grounding conductor shall be plainly
identified by:
a) Use of a wire binding screw with a green-colored head that is hexagonal, slotted, crossslotted,
or both;
b) Use of a threaded stud with a green colored hexagonal nut;
c) Use of a green colored pressure terminal connector;
d) Being marked "G", "GR", "GND", "Ground", "Grounding", or the like;
e) A marking on a wiring diagram provided on the product; or
f) The grounding symbol illustrated in Figure 11.1, on or adjacent to the terminal, or on a wiring
diagram provided on the product.
The wire-binding screw or pressure wire connector shall be located so that it is not removed during normal
servicing of the machine.