Electric Wiring, 3rd Edition

Wiring

a

fire

or

heater

83

electrically connected together

and

to the

protective conductor

of

the

final

circuit; an earth terminal

is

usually provided

for

this purpose. Where conduit

systems

are

employed,

a

bonding wire should

be

connected between

the

conduit

and the

earth terminal

of

the

heater.

Table 6.1. Loading

for

radiant

and

convector heaters

Situation

Houses

Ground floor with no basement

Intermediate floor

Top floor

Bungalows

Intermediate

passages

Loading in kW per 30m3

Rooms with one

exposed wall

1-1%

1-1%

i%-v/

2

iy

2

-i

3

/4

1

Rooms with two

exposed walls

iy

2

-i

3

/4

1%-1

1

/2

iy

2

-i

3

/4

1

3

/4-2

Rooms with three

exposed walls or

with an excessive ...