COMMENT 1000V Table 430.97

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fmtjfw

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I'm looking for constructive criticism on the following, and if you think it is merited, support in the form of comments from you on 1000V Table 430.97. Thanks, Jim Williams

4 Comment:

Table 430.97 Minimum Spacing Between Bare Metal Parts
Nominal Voltage
Opposite Polarity Where
Mounted on the Same Surface
Opposite Polarity Where
Held Free in Air Live Parts to Ground
mm in. mm in. mm in.

Not over 125 volts, nominal 19.1 3⁄4 12.7 1⁄2 12.7 1⁄2
Not over 250 volts, nominal 31.8 11⁄4 19.1 3⁄4 12.7 1⁄2
Not over 600 volts, nominal 50.8 2 25.4 1 25.4 1
Not over 1000 Volts, nominal TBS TBS TBS TBS TBS TBS

5 Statement of Problem and Substantiation.

Add a row for 1000 Volts and fill in appropriate spacing values.
 
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