Appendix E

Glossary for Distribution System Terminology

Some of the most commonly used terms, both in this book and in general usage, are defined later. Most of the definitions given in this glossary are based on Refs. [1–8].

AAAC: Abbreviation for all-aluminum-alloy conductors. Aluminum-alloy conductors have higher strength than those of the ordinary electric-conductor grade of aluminum.

AA: Abbreviation for all-aluminum conductors.

ACAR: Abbreviation for aluminum conductor alloy reinforced. It has a central core of higher–strength aluminum surrounded by layers of electric-conductor grade aluminum.

ACL cable: A cable with a lead sheath over the cable insulation that is suitable for wet locations. It is used in buildings at low voltage.

ACSR: ...

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