A Guide to Electrical Wiring

For more than 60 years, Magnetic Shield Corporation has perfected highly practical solutions to the problem of electromagnetic interference (EMI) in electrical and electronic equipment used in applications from schools to submarines, heart monitors to missiles. While the need for magnetic shielding in equipment, instrumentation, systems and the like is obvious, there is an equally important yet often overlooked problem with electrical wiring itself.

The problem of electrical wiring works both ways; that is, sometimes the wiring itself is the cause of the electromagnetic interference, and sometimes the wiring must be shielded from "outside" interference. In any case, Magnetic Shield Corporation will have the answer for you. If your problem is an existing one, we will work with you to solve it. Even better, if you have the opportunity and foresight to eliminate the potential for electromagnetic interference before it occurs instead of having to retrofit, which is more expensive, we can certainly save you both time and money

Here then are a range of effective, proven solutions to electromagnetic interference in electrical wiring applications.

Effective, proven solutions to electromagnetic interference in electrical wiring applications.

INTER-8 WEAVE cable significantly reduces magnetic field pickup and radiation compared to conventional twisted air cable.

Although superior to parallel conductors, a current-carrying twisted pair is of limited effectiveness in reducing electromagnetic radiation. The twisted pair is also limited in avoiding unwanted pickup of external H-fields (D.C. to 100 kiloHertz).

INTER-8 WEAVE cable provides substantial improvement over the performance of a conventional twisted pair. A patented design of Magnetic Shield Corporation, INTER-8 WEAVE cable involves four separate conductors braided into interlocking loops. Adjacent conductors 90º apart are connected together, effectively providing a two conductor circuit.

Because the INTER-8 WEAVE design incorporates parallel conductors, the cable provides double the current carrying capacity of a two wire cable of the same AWG size. Unlike conventional twisted pair, INTER-8 WEAVE does not kink or untwist when left free.

Typical applications for INTER-8 WEAVE cable include cable connections to strain gages, thermocouples, photoelectric detectors, audio coils and transformers, piezoelectric transducers, and preamplifiers. Current carrying conductors generating interference fields can be replaced with INTER-8 WEAVE cable to substantially reduce radiation. In low impedance circuits where external interference results in disturbing signals, INTER-8 WEAVE cable will reduce the circuit sensitivity to the external fields.

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