Article 427: Fixed Electric Heating Equipment for Pipelines and Vessels
Article 427 Fixed Electric Heating Equipment for Pipelines and Vessels
I. General
|
427.1 |
Scope |
|
427.2 |
Definitions |
|
427.3 |
Application of Other Articles |
|
427.4 |
Continuous Load |
II. Installation
|
427.10 |
General |
|
427.11 |
Use |
|
427.12 |
Thermal Protection |
|
427.13 |
Identification |
III. Resistance Heating Elements
|
427.14 |
Secured |
|
427.15 |
Not in Direct Contact |
|
427.16 |
Expansion and Contraction |
|
427.17 |
Flexural Capability |
|
427.18 |
Power Supply Leads |
|
427.19 |
Electrical Connections |
|
427.20 |
Marking |
|
427.22 |
Equipment Protection |
|
427.23 |
Grounded Conductive Covering |
IV. Impedance Heating
|
427.25 |
Personnel Protection |
|
427.26 |
Isolation Transformer |
|
427.27 |
Voltage Limitations |
|
427.28 |
Induced Currents |
|
427.29 |
Grounding |
|
427.30 |
Secondary Conductor Sizing |
V. Induction Heating
|
427.35 |
Scope |
|
427.36 |
Personnel Protection |
|
427.37 |
Induced Current |
VI. Skin Effect Heating
|
427.45 |
Conductor Ampacity |
|
427.46 |
Pull Boxes |
|
427.47 |
Single Conductor Enclosure |
|
427.48 |
Grounding |
VII. Control and Protection
|
427.55 |
Disconnecting Means |
|
427.56 |
Controls |
|
427.57 |
Overcurrent Protection |