Complete Compiled Specification.pdf - Peck Ormsby Construction

B. The TVSS shall be compatible with the electrical system voltage, current, configuration and
intended application.
C. The TVSS maximum continuous operation voltage (MCOV) shall be capable of sustaining
100% of the nominal RMS voltage continuously without degradation.
D. The TVSS shall only use solid state clamping components connected in parallel with the
supply to limit the surge voltages. Clamping components shall be installed in 7 modes. Four
mode TVSS devices are not acceptable.
E. Provide visual or audible indication of properly performing protection.
F. Provide a surge counter.
G. House in the appropriate NEMA rated enclosure or within the switchboard or panelboard as a
complete US listed assembly. Refer to drawings for installation requirements.
H. Warranty shall be for full replacement without pro-rating value, for a minimum period of 5
years.
PART 3 - EXECUTION
3.1 INSTALLATION:
A. Ship with complete installation instructions which are to be followed in detail. The
manufacturer's representative is to be contacted and is to supervise the installation.
B. Installation shall comply with all applicable State and National Electrical Codes, including
NEC Articles 240, 250, 310 and 280. Provide overcurrent protection and a means to
disconnect power from unit. All fuses utilized for the TVSS overcurrent protection shall be of
the Time Delay type rated for the available fault current at the location of installation.
C. Phase, neutral and ground leads of installed TVSS must be grouped and twisted together up
to the point of connection at the bus or overcurrent device. Lead lengths must be as short as
possible, avoiding bends where possible. In no case will lead lengths greater than sixteen
inches or sharp bends in leads be permitted. Lead length is measured from switchboard bus
or breaker to point of connection to TVSS device.
D. Conductors must terminate with compression type lugs.
E. Mount so that suppressor indicator lights will be clearly visible after installation.
F. Overcurrent and disconnect devices shall be exclusively utilized for the TVSS device.
G. Raceway from TVSS to switchboard shall consist of rigid steel conduit with double locknuts
and grounding bushings connected to switchboard ground.
H. Overcurrent protection sizing shall be as per manufacturer’s instructions. Conductor sizing
shall be based on NEC requirements.
END OF SECTION
SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
TRANSIENT VOLTAGE SURGE SUPPRESSORS 16478-3