Basic Specifications for New Construction
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Required Conduit: 2-2” schedule 40 PVC for Main Cable & 1-2” for service laterals.
All Sweeps (90 degree elbow) require minimum radius of 24” . If absolutely
necessary for a tighter turn, in addition to the 24” sweeps a 45 degree turn will be
allowed when the run is 200’ or less.
For runs 300’ or greater, a pulling vault ( 17”Wx30”Lx18”Deep, concrete) will be
installed mid-way to allow pulling of hardline cable. Additionally, no more than 4 - 90
degree sweeps may be placed in a run due to the difficulty of pulling hard-line cable.
Conduit in joint (shared) trench must be installed with the required separation spec’s
required by all other utilities occupying joint trench i.e. AT&T, PG&E, etc.
All communications must have a minimum of 12” clearance from any conduit placed for
secondary or service power.
Coverage for 2” conduit upon burial, minimum of 24” of cover.
All conduit placed must have either ¼” pullrope or 1500 mule tape installed to insure
continuity has been tested. Pullstring may be used for Service laterals.
All conduits must be glued together. Conduit ends are to be taped or capped to alleviate
ingress of debris.
If placing vault enclosure(s), conduit should be cut no lower than 10” below lid of
enclosure on standard depth vault to allow forming of cables and prevention of debris
into the PVC. In the case of deeper vaults or double deep application, 3” above base
level of bottom
Conduits placed at pole locations should be placed snug to pole. Location should be
approved by CATV representative to prevent proximity and/or climbing space
violations.
Prewiring of Residential/Commercial Structures
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Coax to be used will be of the RG-6 type with a minimum of 77% or better braid.
All units are to be wired with each room to be pulled back to a single centralized point.
Concerning MDU/Hotel/Hospital applications, centralized location should be no more
than 150’ from furthest point to feed.
Centralized point should allow a space approximately 24”X 24”, if total number of
service drops is 25 or less. Applications with greater than 25 should allow 36”X 36”.
If centralized point is to be more than 200’, a single access point must be made available
for possible amplifier location if needed.
When wiring, if a change of direction becomes necessary, care must be taken to assure
manufacturers specification of no less than a 5” bend radius be assured.
Coaxial cable may not be pulled in the same holes through studs as Romex for power.
Minimum of 2” is required from power unless Romex is pulled in raceway or EMT.
When attaching coax to studs, care must be taken not to flatten or pinch cable(s).