fmtjfw
Senior Member
- Location
- Fairmont, WV, USA
Section/Paragraph: 225.19(A) Exception No. 2
Revised Text
225.19 Clearances from Buildings for Conductors of Not over 1000 Volts, Nominal.
....
(A) Above Roof.
....
Exception No. 2:
Where the voltage between conductors does not exceed 300, and the roof has a slope of 100 mm in 300 mm (4 in. in 12 in.) 1 in 3 or greater steeper, a reduction in clearance to 900 mm (3 ft) shall be permitted.
Substantiation
Slope is dimensionless, it is just a ratio.
Inserted Deleted
Revised Text
225.19 Clearances from Buildings for Conductors of Not over 1000 Volts, Nominal.
....
(A) Above Roof.
....
Exception No. 2:
Where the voltage between conductors does not exceed 300, and the roof has a slope of 100 mm in 300 mm (4 in. in 12 in.) 1 in 3 or greater steeper, a reduction in clearance to 900 mm (3 ft) shall be permitted.
Substantiation
Slope is dimensionless, it is just a ratio.
Inserted Deleted
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