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Pastimes : Dream Machine ( Build your own PC ) -- Ignore unavailable to you. Want to Upgrade?

To: Moving Sphere who wrote (11649)	12/12/2000 10:56:18 PM
From: Howard R. Hansen	Read Replies (1) \| Respond to of 14778

So, sheet metal is my answer! No not any old sheet metal. You need a metal that is magnetic, like cast iron. Aluminum and most stainless steels are not magnetic and would not make a good magnetic shield. However, before experimenting with magnetic shields get your wiring checked first. The hot and return side of all electrical wiring should be as close together as possible. Ideally the two leads should be twisted together. The greater the separation ot the hot and return leads the greater will be the external magnetic field. Hence check for wiring where there is appreciable separation between the hot and return leads. I know it would be very expensive to implement now but an excellent method to significantly reduce external magnetic fields is to have your wiring installed in black iron pipe.