. 4.
Rule: Clearance the shortest direct air path over the top the
barrier
Fig.209: Example 9:
> mm— —
UJ
Gap between head screw and wall recess wide enough taken into
account..Fig.■1
1 A________1
Condition: Creepage distance through uncemented joint less than
creepage distance over barrier... 4..208: Example 8:
172 ________________
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■ .
Clearance distance: Creepage distance:
