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Copper or Aluminum?

Both COPPER and ALUMINUM are approved by UL (Underwriters Laboratories) for the installation of Lightning Rod Systems. There is little argument that Copper is the material of choice because it is a better conductor of electricity. If aluminum is used in an installation, the cable has to be larger than the copper cable to conduct the same amount of current.

Whenever possible, we specify the use of Copper in our systems because it is the better material and is physically stronger and a better dollar value. The Copper cable is smaller and thus less conspicuous and blends in better with most architecture, such as against brick walls and dark roofs.

There are times when it is preferable to use Aluminum materials. Since Aluminum and Copper are of dis-similar metals, they tend to corrode each other. We would specify Aluminum in the following exceptions:

(1) If your roof were made of bare aluminum or bare galvanized steel.

(2) If your building were very light colored and the use of the dark copper cable would be unattractive.

(3) If the absolute lowest cost were the only consideration. NOTE: If you want to use copper anyway, you can use our "tinned" (lead coated) copper cable.

Aluminum Lightning Protection equipment is approved by Underwriters Laboratories and has proved most satisfactory, but there are a few precautions to consider when using this material:

1. Never use underground. The alkali in the soil will destroy aluminum. Aluminum should terminate at least 1' above ground.

2. Aluminum and copper materials should not be used together unless approved bimetallic connectors are used.

3. Aluminum should never be used where it will come in contact with white wash, calcium, or alkali-base paint as these are most injurious to aluminum.

4. Aluminum should never be placed where leaves or moisture will collect and remain for a long period of time.

5. Copper grounding equipment is always used with aluminum systems.




			Order #M3 Bimetal Splicer when using aluminum

	Buy your Ground Rods locally. Save at least $40 By getting them on your own. 1/2” Dia. x 8’ Long (minimum) Solid Copper or Copper Clad Steel


		#ZM3 Bi-Metal Connector



				#Z98 Ground Rod Clamps


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