vault backup: 2026-01-12 11:18:59

2026-01-12 11:18:59 -05:00
parent 76479bcedd
commit f811d9ac91
42 changed files with 169 additions and 119 deletions
@@ -406,22 +406,22 @@ Nonshielded, ozone-resistant insulated conductors with a maximum phase-to-phase

 > [!important] Exception No. 1:
 > Nonshielded insulated conductors listed by a qualified testing laboratory shall be permitted for use up to 2400 volts under the following conditions:
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 > * (1) Conductors shall have insulation resistant to electric discharge and surface tracking, or the insulated conductor(s) shall be covered with a material resistant to ozone, electric discharge, and surface tracking.
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 > * (2) Where used in wet locations, the insulated conductor(s) shall have an overall nonmetallic jacket or a continuous metallic sheath.
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 > * (3) Insulation and jacket thicknesses shall be in accordance with Table 311.10(B).

 > [!important] Exception No. 2:
 > Nonshielded insulated conductors listed by a qualified testing laboratory shall be permitted for use up to 5000 volts to replace existing nonshielded conductors, on existing equipment in industrial establishments only, under the following conditions:
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 > * (1) Where the condition of maintenance and supervision ensures that only qualified personnel install and service the installation.
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 > * (2) Conductors shall have insulation resistant to electric discharge and surface tracking, or the insulated conductor(s) shall be covered with a material resistant to ozone, electric discharge, and surface tracking.
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 > * (3) Where used in wet locations, the insulated conductor(s) shall have an overall nonmetallic jacket or a continuous metallic sheath.
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 > * (4) Insulation and jacket thicknesses shall be in accordance with Table 311.10(B).

 > [!info] Informational Note: