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How Cable Length and Bending Affect a Furnace Installation

Technical Published 24 August 2026 1 min read 32 views
How Cable Length and Bending Affect a Furnace Installation

Cable length is one of the simplest specifications to provide, but it is also one of the most common sources of installation problems.

Too short and too long both cause problems

A cable that is too short may be difficult to install and can experience excessive mechanical stress. A cable that is unnecessarily long may create additional routing, movement and space-management issues.

The correct measurement should normally follow the actual connection path and identify the terminal-to-terminal requirement. For replacement cables, measuring the existing cable is usually the safest starting point.

Bending is equally important. Flexible furnace cables are designed for movement, but flexibility does not mean unlimited bending. The installation should avoid sharp bends, crushing, twisting and contact with damaging edges.

How Cable Length and Bending Affect a Furnace Installation
Zheng Zhou Li Zhao — furnace copper parts made in our own plant.

Bending, routing and tilting furnaces

On tilting induction furnaces, observe the cable in both the normal and tilted positions. The cable should have sufficient movement allowance without being pulled tight.

When sending a drawing to the manufacturer, show:

  • Terminal-to-terminal length
  • Installation direction
  • Approximate bend path
  • Moving parts
  • Water connection direction
  • Nearby hot or sharp components

Photos of the installed cable can be more informative than a dimension alone.

If a new furnace is being designed, cable routing should be considered during equipment layout rather than after installation.

How we can help

Zheng Zhou Li Zhao Electric Furnace Co., Ltd. can review installation photographs and drawings when preparing customized water-cooled cable assemblies.

Send your cable drawing, photos, dimensions or furnace specifications for technical confirmation and a quotation — normally within 24 hours. Get a quote

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