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Comprehensive Guide to Electrical Box Installation and Cable Connections

This detailed guide covers essential practices for electrical box installation, including screw requirements, cable sheathing visibility, and proper wire connection protocols. Understand abbreviations such as AFF and the significance of different screw colors, including silver, brass, and green, for connecting various wire types. Learn how to properly support cables, use eye hooks effectively, and perform quality cuts on EMT pipes. For anyone involved in electrical work, this resource provides practical insights to ensure safety and compliance with installation standards.

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Comprehensive Guide to Electrical Box Installation and Cable Connections

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  1. Light 1 Project Layout C 70” AFF

  2. AFF is the abbreviation for • After first fire • Above finished floor • Above flat floor • At first floor • Average floor finish

  3. Light 1 Project Layout C 70” AFF

  4. C is the abbreviation for • Clear left • Center low • Clear line • Center line • Correct line

  5. SUPPORTING your BOXES

  6. How many screws are needed when installing a box • 4 • 3 • 5 • 2 • 1

  7. EYE HOOKS

  8. The proper direction of an eyehook is • To the left and up • To the right and up • To the left and down • To the right and down • To the left then to the right

  9. Supporting your cable

  10. Staples shall be installed • 12 inches from a box and 3-1/2 feet thereafter • 8 inches from a box and 4-1/2 feet thereafter • 12 inches from a box and 4-1/2 feet thereafter • 10 inches from a box and 4 feet thereafter • 12 inches from a box and 4 feet thereafter

  11. Cutting your EMT

  12. After you cut your pipe, you shall • Polish the pipe • Ream the pipe • Install the pipe • Measure the pipe • File the pipe

  13. Connecting your Devices SILVER screws COLORS

  14. SILVER terminal screws are for • Black wires • Green wires • Yellow wires • Red wires • White wires

  15. Connecting your Devices BRASS screws COLORS

  16. BRASS terminal screws are for • Black wires • Green wires • Yellow wires • Red wires • White wires

  17. Sheathing in the Box Cable sheathing NM cable Lock-nut Box connector

  18. How much sheathing shall be visible inside your box at the box connector • ¼ inch • ½ inch • 1/8 inch • ¾ inch • 5/8 inch

  19. Connecting your Devices GREEN screws COLORS

  20. GREEN terminal screws are for • Yellow wires • Green wires • Red wires • Bare wires • White wires

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