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(6) Wire-Pulling Compounds
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Wire-pulling compounds that increase the dielectric constant shall not be used on the secondary conductors of the isolated power supply.
Informational Note No. 1: It is desirable to limit the size of the isolation transformer to 10 kVA or less and to use conductor insulation with low leakage to meet impedance requirements.
Informational Note No. 2: Minimizing the length of branch-circuit conductors and using conductor insulations with a dielectric constant less than 3.5 and insulation resistance constant greater than 6100 megohm-meters (20,000 megohm-feet) at 16°C (60°F) reduces leakage from line to ground, reducing the hazard current.
Related Code Sections
(6) Special Occupancies, Wire-Pulling Compounds
Wire-pulling compounds that increase the dielectric constant shall not be used on the secondary conductors of the isolated power supply ...
(6) Special Occupancies, Wire-Pulling Compounds
Wire-pulling compounds that increase the dielectric constant shall not be used on the secondary conductors of the isolated power supply ...
(1) Wiring Methods and Materials, Straight Pulls
In straight pulls, the length of the box or conduit body shall not be less than eight times the metric designator (trade size) of the largest raceway ...
(1) Wiring Methods and Materials, Straight Pulls
In straight pulls, the length of the box or conduit body shall not be less than eight times the metric designator (trade size) of the largest raceway ...
(2) Special Occupancies, Compound
The compound shall provide a seal to minimize the passage of gas and/or vapors through the sealing fitting and shall not be affected ...