Sony SAN-18D2 Installation Manual - Page 19

Appendix

Other

Information

The

sections

covered

in

this

appendix

are:

Li

National

Electrical

Code

Specifications

Limited

Warranty

Glossary

Index

National

Electrical

Code

The

following

portions

of

the

National

Electrical

Code

are

provided

to

assist

you

with

the

installation

of

your

digital

satellite

antenna.

These

pages

represent

only

a

portion

of

the

entire

National

Electrical

Code,

and

should

be

consulted

for

reference

purposes

only.

For

the

complete

code,

please

refer

to

the

National

Electrical

Code

Handbook.

250-1.

Scope.

This

article

covers

general

requirements

for

grounding

and

bonding

of

electrical

installations,

and

specific

requirements

in

(a)

through

(f)

below.

(a)

Systems,

circuits,

and

equipment

required,

permitted,or

not

permitted

to

be

grounded.

(b)

Circuit

conductor

to

be

grounded

on

grounded

systems.

(c)

Location

of

grounding

connections.

(d)

Types

and

sizes

of

grounding

and

bonding

conductors

and

electrodes.

(e)

Methods

of

grounding

and

bonding.

(f)

Conditions

under

which

guards,

isolation,

or

insulation

may

be

substituted

for

grounding.

250-81.

Grounding

Electrode

System.

If

available

on

the

premises

at

each

building

or

structure

served,

each

item

(a)

through•(d)

below,

and

any

made

electrodes

in

accordance

with

Sections

250-83

(c)

and

(d),

shall

be

bonded

together

to

form

the

grounding

electrode

system.

Interior

metal

water

piping

located

more

than

5

feet

(152

cm)

from

the

point

of

entrance

to

the

building

shall

not

be

used

as

a

conductor

to

interconnect

the

electrodes

and

the

grounding

electrode

conductor.

The

bonding

jumper

shall

be

installed

in

accordance

with

Sections

250-92

(a)

and

(b),

shall

be

sized

in

accordance

with

Section

250-94,

and

shall

be

connected

in

the

manner

specified

in

section

250-115.

The

unspliced

grounding

electrode

conductor

shall

be

permitted

to

run

to any

convenient

grounding

electrode

available

in

the

grounding

electrode

system.

It

shall

be

sized

for

the

largest

grounding

electrode

conductor

required

among

all

the

available

electrodes.

•

(a)

Metal

thiderground

Water

Pipe.

A

metal

underground

water

pipe

in

direct

contact

with

the

earth

for

10

feet

(3.05

m)

or

more

(including

any

metal

well

casing

effectively

bonded

to

the

pipe)

and

electrically

continuous

(or

made

electrically

continuous

by

bonding

around

insulating

joints

or

sections

or

insulating

pipe)

to

the

points

of

connection

of

the

grounding

electrode

conductor

and

the

bonding

conductors.

Continuity

of

the

grounding

path

or

the

bonding

connection

to

interior

piping

shall

not

rely

on

water

meters.

A

metal

underground

water

pipe

shall

be

supplemented

by

an

additional

electrode

of

a

type

specified

in

Section

250-81

or

in

Section

250-83.

The

supplemental

electrode

shall

be

permitted

to

be

bonded

to

the

grounding

electrode

conductor,

the

grounded

service

-entrance

conductor,

the

grounded

service

raceway,

or

any

grounded

service

enclosure.

250-83.

Made

and

Other

Electrodes.

Where

none

of

the

electrodes

specified

in

Section

250-81

is

available,

one

or

more

of

the

electrodes

specified

in

(b)

through

(d)*

below

shall

be

used.

Where

practicable,

made

electrodes

shall

be

embedded

below

permanent

moisture

level.

Made

electrodes

shall

be

free

from

nonconductive

coatings,

such

as

paint

or

enamel.

Where

more

than

one

electrode

is

used,

each

electrode

of

one

grounding

system

(including

that

used

for

lightning

rods)

shall

not

be

less

than

6

feet

(1.83

m)

from

any

other

eledrode

of

another

grounding

system.

(c)

Rod

and

Pipe

Electrodes.

Rod

and

pipe

electrodes

shall

not

be

less

than

8

feet

(2.44

m)

in

length

and

shall

consist

of

the

following

materials,

and

shall

be

installed

in

the

following

manner:

(1)

Electrodes

of

pipe

or

conduit

shall

not

be

smaller

than

s/4

-inch

trade

size

and,

where

of

iron

or

steel,

shall

have

the

outer

surface

galvanized

or

otherwise

metal

-coated

for

corrosion

protection.

(2)

Electrodes

of

rods

of

iron

or

steel

shall

be

at

least

Ve

inch

(15.87

mm)

in

diameter.

Stainless

steel

rods

less

than

inch

(15.87

mm)

in

diameter,

nonferrous

rods,

or

their

equivalent

shall

be

listed

and

shall

not

be

less

than

'I,

inch

(12.7

mm)

in

diameter.

(3)

The

electrode

shall

be

installed

such

that

at

least

8

feet

(2.44

m)

length

is

in

contact

with

the

soil.

It

shall

be

driven

to

a

depth

of

not

less

than

8

feet

(2.44

m)

except

that,

where

rock

bottom

is

encountered,

the

electrode

shall

be

driven

at

an

oblique

angle

not

to

exceed 45

degrees

from

the

vertical

or

shall

be

buried

in

a

trench

that

is

at

least

2V2

feet

(762

mm)

deep.

The

upper

end

of

the

electrode

shall

be

flush

with

or

below

ground

level

unless

the

above

ground

end

and

the

grounding

electrode

conductor

attachment

are

protected

against

physical

damage

as

specified

in

Section

250-117.

250-115.

Connection

to

Electrodes.

The

grounding

conductor

shall

be

connected

to

the

grounding

electrode

by

exothermic

welding,

listed

lugs,

listed

pressure

connectors,

listed

clamps,

or

other

listed

means.

Connections

depending

on

solder

shall

not

be

used.

Ground

clamps

shall

be

listed

for

the

materials

of

the

grounding

electrode

and

the

grounding

electrode

conductor

and,

where

used

on

pipe,

rod,

or

other

buried

electrodes,

shall

also

be

listed

for

direct

soil

burial.

Not

more

than

one

conductor

shall

be

connected

to

the

grounding

electrode

by

a

single

clamp

or

fitting

unless

the

clamp

or

fitting

is

listed

for

multiple

conductors.

One

of

the

methods

indicated

in

(a),

(b)

or

(c)

below

shall

be

used.

(a)

Bolted

Clamp.

A

listed

bolted

clamp

of

cast

bronze

or

brass,

or

plain

or

malleable

iron.

(b)

Pipe

Fitting,

Pipe

Plug,

etc.

A

pipe

fitting,

pipe

plug,

or

other

approved

device

screwed

into

a

pipe

or

pipe

fitting.

(c)

Sheet

-Metal

-Strap

Type

Ground

Clamp.

A

listed

sheet

-metal

-strap

type

ground

clamp

having

a

rigid

metal

base

that

seats

on

the

electrode

and

having

a

strap

of

such

material

and

dimensions

that

it

is

not

likely

to

stretch

during

or

after

installation.

810-1.

Scope.

This

article

covers

radio

and

television

receiving

equipment

and

amateur

radio

transmitting

and

receiving

equipment,

but

not

equipment

and

antennas

used

for

coupling

carrier

current

to

power

line

conductors.

810-15.

Grounding.

Masts

and

metal

structures

supporting

antennas

shall

be

grounded

in

accordance

with

Section

810-21.

810-21.

Grounding

Conductors

—

Receiving

Stations.

Grounding

conductors

shall

comply

with

(a)

through

(j)

below.

(a)

Material.

The

grounding

conductor

shall

be

of

copper,

aluminum,

copper

-clad

steel,

bronze,

or

similar

corrosion

-resistant

material.

(b)

Insulation.

Insulation

on

grounding

conductors

shall

not

be

required.

(c)

Supports.

The

grounding

conductors

shall

be

securely

fastened

in

place

and

shall

be

permitted

to

be

directly

attached

to

the

surface

wired

over

without

the

use

of

insulating

supports.

(d)

Mechanical

Protection.

The

grounding

conductor

shall

be

protected

where

exposed

to

physical

damage,

or

the

size

of

the

grounding

conductors

shall

be

increased

proportionately

to

compensate

for

the

lack

of

protection.

(e)

Run

in

Straight

Line.

The

grounding

conductor

for

an

antenna

mast

or

antenna

discharge

unit

shall

be

run

in

as

straight

a

line

as

practicable

from

the

mast

or

discharge

unit

to

the

grounding

electrode.

(f)

Electrode.

The

grounding

conductor

shall

be

connected

as

follows:

(1)

To

the

nearest

accessible

location

on

(1)

the

building

or

structure

grounding

electrode

system

as

covered

in

Section

250-81,

(2)

the

grounded

interior

metal

water

piping

system

as

covered

in

Section

250-80(a),

(3)

the

power

service

accessible

means

external

to

enclosures

as

covered

in

Section

250-71(b),

(4)

the

metalic

power

service

raceway,

(5)

the

service

equipment

enclosure,

or

(6)

the

grounding

electrode

conductor

or

the

grounding

electrode

conductor

metal

enclosures;

or

(2)

If

the

building

or

structure

served

has

no

grounding

means,

as

described

in

(f)

(1),

to

anyone

of

the

individual

electrodes

described

in

section

250-81;

or

(3)

If

the

building

or

structure

served

has

no

grounding

means,

as

described

in

(f)

(1),

or

(f)

(2),Io

(1)

an

effectively

grounded

metal

structure

or

(2)

to

any

of

the

individual

electrodes

described

in

Section

250-83.

(g)

Inside

or

Outside

Building.

The

grounding

conductor

shall

be

permitted

to

be

run

either

inside

or

outside

the

building.

(h)

Size.

The

grounding

conductor

shall

not

be

smaller

than

No.10

copper

or

No.

8

aluminum

or

No.

17

copper

-clad

steel

or

bronze.

(i)

Common

Ground.

A

single

grounding

conductor

shall

be

permitted

for

both

protective

and

operating

purposes.

(j)

Bonding

of

Electrodes.

A

bonding

jumper

not

smaller

than

No.

6

copper

or

equivalent

shall

be

connected

between

the

radio

and

television

equipment

grounding

electrode

and

the

power

grounding

electrode

system

at

the

building

or

structure

served

where

separate

electrodes

are

used.

21

Sony SAN-18D2 Installation Manual - Page 19

Appendix

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