Complete Compiled Specification.pdf - Peck Ormsby Construction

and there shall be no plastic sheeting or other insulating material placed between the
footing and earth. Bond to re-bar at minimum 10' intervals.
C. Grounds shall be installed where accessible for future inspection and servicing. Where
ground connections are made underground or in inaccessible locations, they shall be made
using an exothermic weld process, Cadweld or equivalent, or Ampact pressure connectors.
D. Install grounding conductors in approved metallic raceways unless specifically shown or
specified otherwise. Bond at each end and at all intervening boxes and enclosures between
the service equipment and grounding electrode.
E. No. 8 and smaller grounding conductors shall have green insulation. No. 6 and larger shall be
marked with green colored tape at each end and at every box, panel, switchboard, or point
where conductor is accessible.
F. All isolated ground buses shall be used only for conductors from isolated ground receptacles.
Do not bond conduit or enclosures to isolated ground buses. All isolated ground conductors
shall be run back to the main ground point for the separately derived system which serves
them.
G. Provide a #6 grounding conductor to all telephone, data processing and sound system
terminals throughout project unless noted otherwise on the plans. Provide a wall mounted
busbar assembly equivalent to Square D Class 1630-PK15GTA/PKGTAB.
3.9 TVSS (TRANSIENT VOLTAGE SURGE SUPPRESSION) INSTALLATIONS
A. When TVSS units are specified, they are to be shipped with complete installation instructions
which are to be followed in detail. The manufacturer’s representative is always to be
contacted and is to supervise the TVSS installation.
B. Supplemental installation information is as follows:
1. Use the breaker space closest to the neutral bus. Nipple the suppressor to the panel
where the suppressor can be installed so as to keep both the hot leads and the
neutral lead as short and straight as possible from the suppressor to the breakers
and the neutral bus.
2. The best performance is achieved with the shortest leads and neutral. All efforts
within the code should be used to minimize the lead lengths. Ideally the leads should
be less than eight inches long. Each inch of lead above six inches will add
approximately 20 volts to the quoted let-through voltage. Cut the leads down to the
shortest size that will allow installation.
3. If the neutral bus is out of reach of the leads, then a #4 AWG conductor is to be run
from the remote neutral bus to a lug near the suppressor, and the lead from the
suppressor should be cut as short as possible.
4. The ground is to be connected to the case of the panel (equipment ground only). Do
not connect the suppressor ground wire to an isolated ground (IG) bus.
3.10 EQUIPMENT CONNECTIONS:
A. The location and method for connecting to each item of equipment shall be verified prior to
roughing-in. The voltage and phase of each item of equipment shall be checked before
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
BASIC ELECTRICAL MATERIALS AND METHODS 16050-9