Electric Wiring, 3rd Edition

88 Wiring fixed appliances

p.v.c.

SHEATH-,

STRANDED

RESISTANCE

ELEMENT.

TERYLENE/CLASS

FIBRE ROVING

1

P.V.C. SHEATHED FLOOR WARMING CABLE

N.B.R./P.V.C.

COMPOUND

SHEATH-

STRANDED

RESISTANCE

ELEMENT-,

E.

P.

RUBBER

INSULATION

TliT

E.P.R. INSULATED FLOOR WARMING CABLE

Fig.

6.1 5. Typical floor warming cables

In the average installation, the cable runs are spaced

at a

distance

of

75-150

mm.

The cable is laid direct

on to

the sub-floor from spacer

to

spacer across the

room with

a

gentle U-turn round the spacers.

It

should

not be

hammered

or

forced into position

and

care should

be

taken

not to

tread heavily

on it or

drop heavy objects

on to it. A

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