[TowerTalk] Fiberglass Enclosure
jim at audiosystemsgroup.com
Sun Aug 12 17:00:00 EDT 2018
Hoffman-style enclosures are widely available in the electrical supply
chain in a wide variety of sizes, styles, and materials. They can be
found online, and I found a particularly useful one at my local
electrical supply store that I used to house eight lightning arrestors.
The one I chose came with a steel backplate, to which I mounted the
arrestors, and which I bonded to my ground system.
FWIW -- for most applications of these enclosures, shielding is not
required, so the presence of steel is structural rather than electrical.
AND -- for shielding to WORK, it must be continuous, AND all
penetrations of the enclosure must be bonded to it at the point of
penetration. The gap presented by an insulating weatherproof gasket
defeats shielding because it interrupts the shielding and forms a slot
73, Jim K9YC
On 8/12/2018 1:04 PM, kstover at ac0h.net wrote:
> These are epoxy powder coated steel not fiberglass.
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