Are coil wrappers important?

[Mfresh]

What's the point of coil wrappers? Is it just to identify the coil? I have a few coils with no wrappers, and wondered if it really matters?

Thanks!

Paul

 

[Dunc]

I'm probably wrong here, but I personally can see any other point other than identifying as you say and helping keep the wire all in check and not coming unravelled.

Dunc

 

[RudeDogg1]

Don't they kinda insulate them because if anything metal touched them if there were uncovered it would short

 

[Nedreud]

Protection and identification. The original wrappers are usually made of an adhesive tape with the brand/type printed on and then stuck on. Just prevents the enamelled wire from being snagged during transit/storage/handling, plus provides easy identification from any orientation (as opposed to say being printed on either end of the plastic bobbin).

 

[Nedreud]

Don't they kinda insulate them because if anything metal touched them if there were uncovered it would short

The wire used in coils is enamelled and therefore electrically insulated, otherwise all the turns would just conduct across each other.

 

[Jay Walker]

It's possible for a coil to have the outermost turns rub through the wrapper, then touch the bracket and eventually short out. One instance that I've encountered was the outlane kick-back on Gilligan's Island. My remedy was a fresh coil and insulation tape on the bracket, while another ops' "solution" was to disable the kickback entirely.

 

[RudeDogg1]

It's possible for a coil to have the outermost turns rub through the wrapper, then touch the bracket and eventually short out. One instance that I've encountered was the outlane kick-back on Gilligan's Island. My remedy was a fresh coil and insulation tape on the bracket, while another ops' "solution" was to disable the kickback entirely.

I had that happen on bsd which would also give a shock when lifting the pf