Understanding Length and Distance in the InOne System

When a customer asks about length, distance, or maximum distance in relation to an InOne cable or system, it is important to first determine what type of distance they mean.

There are three different concepts that must not be confused:

Cable delivery length / drum length
Installation distance – blowing or pulling distance
Electrical distance

The Product Agent should always clarify which of these the customer is asking about before giving a distance-related answer.

1. Cable Delivery Length / Drum Length

This refers to the physical length of cable supplied on a drum.

Each cable type normally has standard delivery lengths and standard drum sizes. These can be found in the relevant cable datasheet.

Cable drums are designated using K numbers, which relate approximately to the drum diameter. For example:

K6 = approximately 600 mm drum diameter
K10 = approximately 1,000 mm drum diameter
K12 = approximately 1,200 mm drum diameter

Other drum sizes follow the same general naming convention.

The standard cable length supplied on a drum depends on factors such as:

Cable type
Cable outer diameter
Drum size
Weight and handling limitations

Standard delivery lengths should always be verified in the relevant product datasheet.

Customers may also request a special drum size or specific cable length. Whether this can be supplied depends on manufacturing, logistics, minimum-order quantities, and other commercial considerations.

Therefore, when somebody asks:

"What is the maximum cable length?"

do not automatically interpret this as an electrical or installation limitation. They may simply be asking how much cable can be delivered on one drum.

2. Installation Distance – Blowing or Pulling Distance

For blowable cables, another important distance is the maximum practical blowing distance.

Blowing distance is not a fixed cable specification. It depends heavily on the complete installation.

Important factors include:

Cable outer diameter
Duct inner diameter
Cable-to-duct filling ratio
Duct type and internal surface
Quality of the installed duct
Number of bends and curves
Bend radius
Changes in elevation
Uphill or downhill sections
Duct deformation or damage
Installation equipment and blowing pressure

Understanding Length and Distance in the InOne System

When a customer asks about length, distance, or maximum distance in relation to an InOne cable or system, it is important to first determine what type of distance they mean.