Apprentice Training, mechanical & systems

Electrician: 3-Way & 4-Way Switching Branch Circuit

15A 120V circuit, dual 3-way switches, one 4-way switch, keyless fixture

Time: 2 h
People: One
Level

Before you start

Clear 3.5 × 2 m of floor and lay out the parts.
22 parts and 50 fasteners in 5 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level and a trimming knife.
Ask someone to help with step 1.
Swapping a traveler conductor with a common terminal will cause erratic switching or dead dead-zones.
Pigtail all equipment ground conductors inside each box directly to switch ground screws.

Apprentice Training & Risk NoticeEducational training demonstration only. Risk: Real-world structural lumber sizing, spans, and fastener schedules carry legal liability and must comply with local building codes (IRC/IBC/OSHA) and certified engineering.

Apprentice Training, mechanical & systems

Electrician: 3-Way & 4-Way Switching Branch Circuit

15A 120V circuit, dual 3-way switches, one 4-way switch, keyless fixture

Time: 2 h
People: One
Level

Before you start

Clear 3.5 × 2 m of floor and lay out the parts.
22 parts and 50 fasteners in 5 steps.
You'll want a screwdrivers and a claw hammer and a tape measure and a drill and a marker and a spirit level and a trimming knife.
Ask someone to help with step 1.
Swapping a traveler conductor with a common terminal will cause erratic switching or dead dead-zones.
Pigtail all equipment ground conductors inside each box directly to switch ground screws.