Yamaha RX-497 User Guide
EXAMPLE OF ANTENNA GROUNDING
MAST
GROUND
CLAMP
CLAMP
ANTENNA
LEAD IN
WIRE
LEAD IN
WIRE
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810–20)
DISCHARGE UNIT
(NEC SECTION 810–20)
GROUNDING CONDUCTORS
(NEC SECTION 810–21)
(NEC SECTION 810–21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PART H)
ELECTRODE SYSTEM
(NEC ART 250. PART H)
ELECTRIC
SERVICE
EQUIPMENT
SERVICE
EQUIPMENT
NEC
– NATIONAL ELECTRICAL CODE
20
Replacement Parts – When replacement parts are required,
be sure the service technician has used replacement parts
specified by the manufacturer or have the same
characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
be sure the service technician has used replacement parts
specified by the manufacturer or have the same
characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other
hazards.
21
Safety Check – Upon completion of any service or repairs to
this product, ask the service technician to perform safety
checks to determine that the product is in proper operating
condition.
this product, ask the service technician to perform safety
checks to determine that the product is in proper operating
condition.
22
Wall or Ceiling Mounting – The unit should be mounted to a
wall or ceiling only as recommended by the manufacturer.
wall or ceiling only as recommended by the manufacturer.
23
Heat – The product should be situated away from heat
sources such as radiators, heat registers, stoves, or other
products (including amplifiers) that produce heat.
sources such as radiators, heat registers, stoves, or other
products (including amplifiers) that produce heat.
24
Outdoor Antenna Grounding – If an outside antenna or
cable system is connected to the product, be sure the antenna
or cable system is grounded so as to provide some
protection 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
mast and supporting structure, grounding of the lead-in wire
to an antenna discharge unit, size of grounding conductors,
location of antenna discharge unit, connection to grounding
electrodes, and requirements for the grounding electrode.
cable system is connected to the product, be sure the antenna
or cable system is grounded so as to provide some
protection 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
mast and supporting structure, grounding of the lead-in wire
to an antenna discharge unit, size of grounding conductors,
location of antenna discharge unit, connection to grounding
electrodes, and requirements for the grounding electrode.
WG63450
Printed in Malaysia
a
RX-497_397_U_FLR.fm Page ii Thursday, September 8, 2005 9:51 AM