interpretation of number of layers of half-lapped tape 3

[electricpete]

If someone says "six layers of half-lapped tape", should we interpret this as:

A - 6 passes, each half-lapped, resulting in total thickness of approx 12 layers of tape.

B - 3 passes, each half-lapped, resulting in total thickness of approx 6 layers of tape.

 

[buzzp]

Based on the info you provided I would definately say A. The result of six layers of lapped tape is 12 layers of tape.
And besides if this is for a splice, the more the better.

 

[pablo02]

I've always interpreted the same as (A).. I'm interested in whether my interpretation is a good one..

 

[edison123]

A -12 layers

 

[electricpete]

Thanks guys. I also see there is an EPRI spec for dedicated turn insulation (over conductor enamel/dacron stand insulation). For >7kv motors they require "2 half-lap or 4 butt-lap layers" of mica tape. That seems consistent with your interpretations.
Thx.

 

[jbartos]

Suggestion: Visit

http://www.capeelectric.com/marion/3m1.html

http://www.parkdetroit.com/Busway Manual.pdf

http://www.pppl.gov/pub_report/2000/PPPL-3364.pdf

http://www.va.gov/facmgt/standard/spec/16126.doc

etc. for more info. A definition of "a layer of half-lapped tape" or Picture would eliminate any ambiguity.