SaskTel HomeNet Bedienungsanleitung PDF herunterladen (Seite 16)

SaskTel servicing guidelines

for

existing Multi-Dwelling

Units

3.2. Pathways/Conduit throughout the MDU

“Pathway Creation” in the typical form of conduit routes is the responsibility of the builder.

“Pathways” or conduit is required between all telephone rooms where SaskTel Fibre Optic

Network equipment will be located and the telephone rooms, either main or secondary, and to

the multimedia panel in the individual suite.

With any conduit that is not filled with cable, a labelled rope or pull-string is to be inserted and

secured to prevent its accidental removal.

3.2.1 Riser

In the situation of stacked telephone rooms, sleeve conduit or slots against the running wall

shall be placed for access between these riser communication room/closets. Sleeves need to

be 6” x10” with a curb of 1” or conduit of 4” with a curb of 1-3”.

3.2.2 Horizontal

Conduit is typically 25 mm [1"] EMT, or rigid PVC conduit (per building codes) to the suite wall

box or media panel in each individual unit from floor telephone room. Flexible ENT can be

considered so long as it meets all applicable codes and does not introduce more than 2 -90

degree bends between pull boxes. Depending on building structure, the conduit may be placed

horizontally and/or vertically.

Conduit fill is determined by adding together the cross-sectional areas of all cables to be

installed in a conduit. This total cable area is then compared with the cross-sectional area

available in the conduit.

A traditional rule of thumb is to follow the NEC which specifies that for three or more cables in a

conduit, the total cross-sectional area of the cables must not exceed 40% of the available area

in the conduit. For one or two conductors in a conduit, the maximums are 53% and 31%,

respectively. Determining the maximum allowable conduit fill for a specific installation requires

either reference to a table or a mathematical calculation.

If fibre runs are installed in a multi-drop or multi-point system, where one larger conduit feeds off

to successive units vs. having individual home run conduit, then the conduit at the beginning of

the run should be of a larger diameter to accommodate the multiple single cables to each suite.

The conduit sizing should conform to the following chart.

This table provides a guide for conduit sizing when there are multiple cable in the conduit and is

as per ANSI/TIA 569-B & 570-B.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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