On Aug 27, 11:33*am, bud-- wrote:
The wirenut spring is not intended to be a major current carrying element..

Which is why wirenuts do not have that metallic spring inside? Wire
nuts using only grooves in the plastic cannot be used. Wire nut uses
a metallic spring sufficient sized to conduct major currents.

Bud is not posting to provide useful facts. Bud is my troll who
routinely posts only to insult.

That wire nut spring must have sufficient gauge and turns to carry
current without fire risk. And then copper wires also must be
sufficiently twisted so that wire without a wire nut will also safely
conduct that current. Bonding by twisting wires and using a wire nut;
both must carry current.

If wire nut is not intended to carry current, then a wire nut would
only have grooved plastic. Wire nuts use a metallic spring that cuts
into (makes electric contact) with each copper wire. Wire nut also
must be able to conduct current between copper wires. Spring must be
sufficiently sized so that this fire cannot happen:
http://www.inspect-ny.com/aluminum/pl2p8.htm
Bud knows this. But a troll always seeks reasons to post insults.

Twist theose wires together so that sufficient contact exists
without a wire nut. Then install the wrie nut so that connection is
even better. No reason for a wire nut to get hot if properly
constructed and installed. Learn from a worst case reason for wire nut
fire in:
http://www.inspect-ny.com/aluminum/pl2p8.htm