Secondary Connections for Overhead Transformers
Secondary Connections for Overhead Transformers
(OP)
Does anyone know why aluminum underground secondary cables have to be terminated on the secondary terminals of an overhead transformers with a spike connector? On the other hand,Copper underground secondary cables can just be terminated bare on the transformer secondary terminals without any issues. Please advise of the reasons why aluminum underground secondary bare conductors can not be terminated on the secondary terminals of a transformer when exposed to air and rain?






RE: Secondary Connections for Overhead Transformers
Also we all know that copper has a lower rate of expansion when heat cycled which results in fewer loose connections to worry about.
Alan
RE: Secondary Connections for Overhead Transformers
RE: Secondary Connections for Overhead Transformers
Bill
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"Why not the best?"
Jimmy Carter
RE: Secondary Connections for Overhead Transformers
But the big deal is the load/heat cycling as we know. Proper aluminum connections are critical in how they are made.
Thankfully we have come a long way with it and connectors and training are better.
But I still don't understand the term "spike connector".
Alan
RE: Secondary Connections for Overhead Transformers
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Bill
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"Why not the best?"
Jimmy Carter
RE: Secondary Connections for Overhead Transformers
Thanks
Alan
RE: Secondary Connections for Overhead Transformers
RE: Secondary Connections for Overhead Transformers
Alan
RE: Secondary Connections for Overhead Transformers
I believe that terminal pins are available that shelter or seal the insulation to prevent the ingress of water.
Bill
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"Why not the best?"
Jimmy Carter
RE: Secondary Connections for Overhead Transformers
Is that one patented or may I use it without fear of recourse?
Alan
RE: Secondary Connections for Overhead Transformers
Bill
--------------------
"Why not the best?"
Jimmy Carter