NEC (National Electrical
Code) Standards
A Note for the Cable Television (CATV) Installer
This reminder is to call the CATV system installer’s atten-
tion to Article 820-40 of the NEC that provides guidelines
for proper grounding and in particular, specifies that the
cable ground shall be connected to the grounding system
of the building as close to the point of cable entry as prac-
tical.
Antenna Grounding Outside the House
If an outside antenna is connected to the receiver, be sure
the antenna system is grounded so as to provide some pro-
tection against voltage surges and built-up static charges.
Article 810 of the National Electrical Code, ANSI/NFPA
70, provides information with regard to proper grounding
of the lead-in wire to an antenna-discharge unit, connec-
tion to grounding electrodes, and requirements for the
grounding electrode. See diagram below.
Cable TV Coaxial Cable, Satellite Dish Cables and Tele-
vision Antennas should be grounded BEFORE the point of
entry into the house.
Always observe proper antenna or satellite dish ground-
ing techniques. When lightning strikes, there is always the
possibility that your antenna or dish (mounted high on the
roof) can become a conduit for lightning and electrically
damage any equipment to which it’s connected. Addition-
ally, proper grounding offers safety to the people using the
audio/video system in the event of an electrical problem.
Unpacking the PRE-1
All Sherbourn preamplifiers are double boxed to survive
the rigors of long distance shipping and arrive to you
undamaged. The outer box may show wear and tear, but
this is no cause for alarm. The outer box’s purpose is to
protect the inner box. If the inner looks heavily damaged,
and you are concerned about damage to the preamplifier,
please call Sherbourn Technical Support at 615-791-4046.
Inside the laminated inner box, the preamplifier is securely
seated between to two reinforced pieces of high-density impact
foam. At first glance, the cardboard backing on the foam
may give the appearance of a third box, but it is easily lift-
ed to reveal the preamplifier, which is wrapped in static
free plastic. The plastic sheeting is tucked underneath the
preamplifier and securely taped. It is recommended that
the plastic sheeting be removed after the amp is lifted out
from the box.
The bottom piece of foam is molded to fit tightly against
the preamplifier, but there is a recessed area on each side,
allowing you to get your hands under the preamplifier and
lift it out of the box.
Inventory: Included with your PRE-1 preamplifier
should be an IEC Class 1 two prong power cord and this
manual.
It is important to save all the packing materials and the boxes in
case your PRE-1 ever needs to be moved or shipped back
to the factory for service.
Make sure you keep your sales receipt. It is the only way
for Sherbourn to establish the duration of your Limited
Warranty and it may come in useful for insurance purpos-
es.
Recording the Serial Number
Please read the serial number located on the rear panel
and record it below along with the date of purchase.
Model
PRE-1
Serial Number ____________________
Place of Purchase ____________________
Date of Purchase ____________________
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