On 02/20/2017 02:22 PM, dpb wrote:
On 02/20/2017 12:15 PM, philo wrote:
...

A friend who does electrical work told me he always grabs the end and
twists with a pliers and makes sure all is secure before putting on the
wire nut.


Any one here know if there is any reason not to do that?

Not required, maybe, is one?

Ideal instructions are as follows:

1. Turn off power before removing or installing connectors.
2. Strip connectors to the correct strip length per the chart below:
Connector Strip length
451® Strip solid wires 3/8€� (9.5 mm)
452® Strip wires ½€� (13 mm)
454® Strip wires 7/8€� (22 mm)
3. Straighten and align frayed strands.
4. Hold wires together with ends even. Lead stranded wires slightly
ahead of solid wires.
5. Pre-twisting acceptable, but not required. For pre-twisting; strip
wires long, hold wires together with insulation even,
twist wire ends together, trim to recommended strip length.
6. Insert bundle into connector and twist clockwise until tight.


The primary reason _against_ imo is owing to the last part of 5. -- you
have to be sure to strip enough extra you've got minimum length needed
when done and then the extra step to trim. I think it's also more
difficult to ensure you've got the torque/bite when have the bunch all
solidly together first, but that's just opinion.

I'm thinking there are some that say don't (twist, that is), but didn't
look past the Ideal datasheet to try to actually find one.

--



I really like the idea of pre-twisting