Tests On Supply Cords; Flexing - Century UL 1086 Manual

FEBRUARY 1, 1996
39.2.3 To determine whether an appliance complies with the requirements in 39.2.1, the appliance is to
be installed in accordance with the manufacturer's instructions. The appliance is to be leveled and 200
cubic centimeters of water are to be poured into the area under consideration; or poured onto the
appliance in such a manner that the water will run into the area under consideration. The water is to be
poured from a height of 6 inches (152 mm), and within a 2-second interval. Both during and after
conditioning, the appliance is to be tested for compliance with 39.2.1(b)(2), and after conditioning, it is to
be tested for compliance with the remaining items of 39.2.1. If the location of two or more areas or
openings is such that one spillage would normally reach both, it may not be necessary to subject each to
a separate test.
Exception: A rear-mounted console on the top of a portable appliance need not be subjected to the
spillage test.

40 Tests on Supply Cords

40.1 Flexing

40.1.1 An appliance in which intended operation of movable parts mechanically affects wiring or other
insulated live parts, including a supply-cord reel, shall operate successfully in the intended manner for the
number of cycles specified in 40.1.2 while connected to a supply circuit in accordance with 32.1. There
shall be no electrical or mechanical breakdown of the appliance and, after the test, the appliance shall
comply with the requirements for dielectric voltage-withstand in 38.1.
Exception: If an interlock switch de-energizes the wiring or uninsulated live parts when flexed, the test
may be conducted without energizing the sample.
40.1.2 The number of cycles of flexing is to be:
a) Fifty if flexing occurs only during installation or inspection of electrical field-wiring connections.
b) Six thousand for a supply-cord reel or if flexing occurs only during regular prescribed servicing
– such as lubrication, resetting of protectors, or the like.
c) Thirty thousand if flexing occurs only during the compaction cycle – such as if a motor were
mounted on a movable ram.
d) One hundred thousand if flexing occurs during loading or unloading of the compacting
compartment.
40.1.3 In a test to determine whether an appliance complies with the requirement in 40.1.1, any
mechanical arrangement may be employed to operate the movable member at a rate of approximately 12
cycles per minute. The movable member, if other than a cord reel, is to be operated so that it will reach
the actual limits of travel in both directions during each cycle.
40.1.4 To determine whether a supply-cord reel complies with the requirements in 40.1.1, the test is to
be conducted with the supply cord not connected to the source of supply. Unreeling of the cord is to be
arranged so that there will be a maximum tendency to abrade the cord insulation and wear parts in contact
with the cord. The direction of tension on the cord during the test is to be in accordance with usage during
normal service. Thirty inches (762 mm) or more of the cord are to be unreeled during the test and recoiled
on the reel automatically. A latching mechanism may be disengaged to conduct the test.
HOUSEHOLD TRASH COMPACTORS - UL 1086 45