The Reason is that there is current goes through a nuteral and no current
goes through a ground and if the ground and nutural are tied together they
both have current passing through them and the only time that current should
go through a ground is when there is a short or something similar...

but to make thing even moree confusing is then why is the nurural and ground
tied together at the main pannel and that is to bond the nuural to the earth
ground...



OK, so the ground is bonded to the neutral at the service panel.

What about the transfromer at the pole? Is the neutral center-tap in
the North American System bonded to the transformer enclosure? Is
this point often connected to a ground wire running down the pole and
into the earth?

Also, why in the US systems is the top wire on the pole the hot wire
(for the transformer primary) and the neutral is usually several feet
below this? Is this arrangement not more prone to lightning damage?

Beachcomber