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WAC 296-46B-920(e) Limited energy
system (06): Limited to the installation of
signaling and power limited circuits and related equipment. This specialty is
restricted to low-voltage circuits. This specialty includes the installation of
telecommunications, HVAC/refrigeration low-voltage
wiring, fire protection signaling systems,
intrusion alarms, energy management and control systems, industrial and
automation control systems, lighting control systems, commercial and residential
amplified sound, public address systems, and such similar low-energy circuits
and equipment in all occupancies and locations.
Limited energy electrical
contractors may perform all telecommunications work under their specialty (06)
electrical license and administrator's certificate.
On the effective date
of this rule, any entity holding a currently valid electrical contractor's
license, electrical administrator's certificate, master specialty electrician's
certificate, or specialty electrician's certificate in this specialty will be
issued combination specialty status for HVAC/refrigeration (06A) at no cost and
without examination.
(f) HVAC/refrigeration systems:
(i) See WAC
296-46B-020 for specific HVAC/refrigeration definitions.
(ii) For the
purposes of this section when a component is replaced, the replacement must be
like-in-kind or made using the equipment manufacturer's authorized replacement
component.
(iii) The HVAC/refrigeration specialties described in (f)(v)
and (vi) of this subsection may:
(A) Install HVAC/refrigeration:
Telecommunications, Class 2 low-voltage control circuit wiring/components in all
residential occupancies;
(B) Install, repair, replace, and maintain line
voltage components within HVAC/refrigeration equipment. Such line voltage
components include product illumination luminaires installed within and powered
from the HVAC/refrigeration system (e.g., reach-in beverage coolers, frozen food
cases, produce cases, etc.) and new or replaced factory authorized accessories
such as internally mounted outlets;
(C) Repair, replace, or maintain the
internal components of the HVAC/refrigeration equipment disconnecting means or
controller so long as the disconnecting means or controller is not located
within a motor control center or panelboard (see Figure 920-1 and Figure
920-2);
(D) Install, repair, replace, and maintain short sections of
raceway to provide physical protection for low-voltage cables. For the purposes
of this section a short section cannot mechanically interconnect two devices,
junction boxes, or other equipment or components; and
(E) Repair,
replace, or maintain line voltage flexible supply whips not over six feet in
length, provided there are no modifications to the characteristics of the branch
circuit/feeder load being supplied by the whip. There is no limitation on the
whip raceway method (e.g., metallic replaced by nonmetallic).
(iv) The
HVAC/refrigeration specialties described in (f)(v) and (vi) of this subsection
may not:
(A) Install line voltage controllers or disconnect switches
external to HVAC/refrigeration equipment;
(B) Install, repair, replace,
or maintain:
Integrated building control systems, other than
HVAC/refrigeration systems;
Single stand-alone line voltage equipment or
components (e.g., heat cable, wall heaters, radiant panel heaters, baseboard
heaters, contactors, motor starters, and similar equipment) unless the equipment
or component:
Is exclusively controlled by the HVAC/refrigeration system
and requires the additional external connection to a mechanical system(s) (e.g.,
connection to water piping, gas piping, refrigerant system, ducting for the
HVAC/refrigeration system, gas fireplace flume, ventilating systems, etc. (i.e.,
as in the ducting connection to a bathroom fan)). The external connection of the
equipment/component to the mechanical system must be required as an integral
component allowing the operation of the HVAC/refrigeration system;
or
Contains a HVAC/refrigeration mechanical system(s) (e.g., water
piping, gas piping, refrigerant system, etc.) within the equipment (e.g.,
"through-the-wall" air conditioning units, self-contained refrigeration
equipment, etc.);
Luminaires that serve as a building or structure
lighting source, even if mechanically connected to a HVAC/refrigeration system
(e.g., troffer luminaire used as a return air device, lighting within a walk-in
cooler/freezer used for personnel illumination);
Raceway/conduit
systems;
Line voltage: Service, feeder, or branch circuit conductors.
However, if a structure's feeder/branch circuit supplies HVAC/refrigeration
equipment containing a supplementary overcurrent protection device(s), this
specialty may install the conductors from the supplementary overcurrent
device(s) to the supplemental HVAC/refrigeration equipment if the supplementary
overcurrent device and the HVAC/refrigeration equipment being supplied are
located within sight of each other (see Figure 920-2); or
Panelboards,
switchboards, or motor control centers external to HVAC/refrigeration
system.
(v) HVAC/refrigeration
(06A):
(A) This specialty is not
limited by voltage, phase, or amperage.
(B) No unsupervised electrical
trainee can install, repair, replace, or maintain any part of a
HVAC/refrigeration system that contains any circuit rated over 600 volts whether
the circuit is energized or deenergized.
(C) This specialty
may:
Install HVAC/refrigeration: Telecommunications, Class 2 low-voltage
control circuit wiring/components in other than residential
occupancies:
That have no more than three floors on/above grade;
or
Regardless of the number of floors above grade if the
installation:
Does not pass between floors;
Is made in a
previously occupied and wired space; and
Is restricted to the
HVAC/refrigeration system;
Repair, replace, and maintain
HVAC/refrigeration: Telecommunications, Class 2 low-voltage control circuit
wiring/components in all occupancies regardless of the number of floors on/above
grade.
(D) This specialty may not install, repair, replace, or maintain:
Any electrical wiring governed under article(s) 500, 501, 502, 503, 504, 505,
510, 511, 513, 514, 515, or 516 NEC (i.e., classified locations) located outside
the HVAC/refrigeration equipment.
(vi) HVAC/refrigeration - restricted
(06B):
(A) This specialty may not
perform any electrical work where the primary electrical power connection to the
HVAC/refrigeration system exceeds: 250 volts, single phase, or 120
amps.
(B) This specialty may install, repair, replace, or maintain
HVAC/refrigeration: Telecommunications, Class 2 low-voltage control circuit
wiring/components in other than residential occupancies that have no more than
three floors on/above grade.
(C) This specialty may not install, repair,
replace, or maintain:
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