16050-13
BASIC MATERIALS AND METHODS
d. Instrumentation may be grouped with instrumentation
e. Specialty wiring may be grouped with like systems
f. Power wiring at 480V shall not be grouped
g. Fire alarm system wiring shall not be grouped with other systems
The installation shall be installed in accordance with all requirements of the
NEC (including wire ampacity derating factors), manufacturer's requirements,
and the Engineer. Excessive grouping which interferes with functionality and
reliability will not be allowed. The wiring configuration as shown on the
drawings is the baseline requirement for the work.
Q. Junction and Pull Boxes
1.
Install junction and pull boxes in readily accessible locations. Access to boxes
shall not be blocked by equipment, piping, ducts and the like. Provide all
necessary junction or pull boxes required due to field conditions and as required
by the National Electrical Code, Article 314.
R. Equipment Mounting Heights
1.
Unless otherwise noted, mount devices and equipment at heights measured
from finished floor to device/equipment base as follows: (Device base to be set
at CMU joint unless otherwise noted. The Contractor shall verify all
dimensions noted with the Engineer for final approval prior to performing or
installing any of this work.)
a. Toggle switches (up position "on") 48"
b. Receptacle outlets (long dimension vertical,
ground pole nearest floor) 16"
c. Receptacle outlets, above baseboard heaters 30" min.
d. Branch circuit panelboards, to top of backbox 72"
e. Distribution panelboards, to top of backbox 72"
f. Terminal cabinets, control cabinets, annunciator panels,
to top of backbox 72"
g. Disconnect switches, motor starters, enclosed circuit breakers,
to top of box 60"
Where structural or other interferences prevent compliance with mounting
heights listed above, consult Engineer for review to change location before
installation.
S. Hangers and Supports
1.
Provide steel angles, channels and other materials necessary for the proper
support and erection of motor starters, distribution panelboards, large
disconnect switches, pendant-mounted lighting fixtures, etc.
Panelboards, cabinets, large pull boxes, cable support boxes and starters shall
be secured to ceiling and floor slab and not supported from conduits. Small
panelboards, etc., as approved by Engineer, may be supported on walls. Racks
for support of conduit and heavy electrical equipment shall be secured to
building construction by substantial structural supports with PVC end caps as
noted above.
All vertical supports for stanchion mount structures and control stations shall
be 4" angle channel.
13089K
