A special restricting plumbing, heating, and air
conditioning electrical contracting license (SP-PH) authorizes the licensee to
install, maintain, or repair electric wiring or devices only as an incident to
the licensee's plumbing, heating, or air conditioning business. Furthermore,
the license authorizes the licensee to install, maintain, or repair only wiring
that is directly related to plumbing, heating, or air conditioning equipment
and that:
(1) is restricted to
circuits or parts of circuits that operate at voltages not exceeding 600 volts,
phase-to-phase;
(2) is electrically
isolated from the building wiring system by an overcurrent protective isolating
device, such as a fused switch or circuit breaker, that:
(a) has been installed, complete with
line-side connections, by others;
(b) is permanently and legibly marked to
identify the equipment served by the device; and
(c) is located within an enclosure intended
solely for, and limited to, serving the specific plumbing, heating, or air
conditioning equipment involved, or is located within a panelboard that serves
the building wiring system and is likewise permanently and legibly marked to
identify the equipment served by the device, provided wiring is installed by
others from the load-side terminals of the device to a junction box, auxiliary
gutter, or similar disconnecting means located outside the panelboard, but in
sight of and within 50 feet of, the plumbing, heating, or air conditioning
equipment served;
(3)
originates at the load-side terminals of the protective isolating
device;
(4) except for control
wiring, is physically adjacent to the plumbing, heating, or air conditioning
equipment from the equipment. Control wiring that receives its control power
from the plumbing, heating, or air conditioning equipment involved may extend
beyond these limits if the control voltage does not exceed 120 volts to ground
and the wiring is protected from overcurrent; and
(5) is not installed in a location considered
as hazardous under the National Electrical Code.
