18 Capacitors
18.1 A capacitor provided as a part of a capacitor motor and a capacitor connected across the line – such
as a capacitor for radio-interference elimination – shall be housed within an enclosure or container that
will protect the plates against mechanical damage and that will prevent the emission of flame or molten
material resulting from breakdown of the capacitor. The construction shall comply with one of the
following:
a) The container shall be of sheet steel not less than 0.020 inch (0.51 mm) thick or shall be
constructed to afford equivalent protection;
b) A capacitor having a sheet-steel container thinner than 0.020 inch or other acceptable material
shall be mounted in an enclosure that houses other parts of the appliance and that is acceptable
for the enclosure of live parts;
c) The individual enclosure of an electrolytic capacitor with means for venting may be such as to
provide protection against mechanical damage only, and no minimum enclosure thickness is
specified; or
d) The individual enclosure of an electrolytic capacitor not provided with means for venting and
with an opening more than 1/16 inch (1.6 mm) wide between the capacitor enclosure and the
motor shall comply with the requirement in 43.2.1, and no minimum enclosure thickness is
specified.
18.2 Under both normal and abnormal conditions of use, a capacitor employing a liquid dielectric medium
more combustible than askarel shall not result in a risk of fire or electric shock and shall be constructed
to reduce the likelihood of expelling the dielectric medium.
18.3 A capacitor complying with the requirements for protected oil-filled capacitors of the requirements for
capacitors, UL 810, is considered to be constructed to reduce the likelihood of expelling the dielectric
medium.
19 Lampholders
19.1 The screw shell of an Edison-base lampholder in an appliance shall be connected to a conductor
that is intended to be connected to the grounded conductor of the power-supply circuit.
19.2 A lampholder shall be such or so installed that uninsulated live parts other than a screw shell will
not be exposed to contact by persons removing or replacing lamps in normal service.
Exception:
The requirement does not apply if it is necessary to dismantle the appliance or remove a
cover plate or other part by means of a tool in order to remove or replace a lamp.
FEBRUARY 1, 1996
HOUSEHOLD TRASH COMPACTORS - UL 1086
27
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