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Total Solution to Earthing & Lightning Protection |
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Earth electrodes
Introduction
Three types of Furse earth rod are available, but the copperbonded steel cored rod
is by far the most popular, due to its combination of strength, corrosion resistance
and comparatively low cost.
Solid copper rod
Furse solid copper earth rods offer greater resistance to
corrosion. They are ideally used in applications where soil
conditions are very aggressive, such as soils with high salt
content.
Stainless steel rod
Stainless steel rods are used to overcome many of the
problems caused by galvanic corrosion which can take place
between dissimilar metals buried in close proximity. Furse
stainless steel earth rods are highly resistant to corrosion.
Quality earth rods are commonly made from either solid
copper, stainless steel or copperbonded steel.
Solid copper and stainless steel rods offer a very high level
of corrosion resistance at the expense of lower strength
and higher cost.
Copperbond rod
Furse copperbond earth rods probably offer to the installer
the best and most economical earth rods available. They are
made by molecularly bonding 99.9% pure electrolytic copper
on to a low carbon steel core.
Furse rods are not of the
sheathed type
. They are highly resistant to corrosion, and
because the steel used has a very high tensile strength, they
can be driven by power hammers to great depths.
The counter-bored couplings are made from high copper
content alloy,
commercial brass is not used
. This again
ensures excellent corrosion resistance and high strength.