How to drop wire into wall
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Resource: safe electric wiring
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How to drop wire into wall |
How
to add switch Home
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Resource: safe electric wiring |
| Wall switches are generally rated
120-277
volt AC.
Look for volt and amp rating embossed on the electrical device. Do not exceed rating. Using 20 Amp switch on a 15 Amp circuit is potentially dangerous. It is acceptable to use 15 Amp switch on a 20 Amp circuit. For 240 volt applications, use double-pole switch. For other voltages, such as 480-347-600 volt etc, and for 3-phase applications, use switch or timer to activate contactor. |
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30 amp switch Single-pole/ 2-pole on-off switches Buy: 30 amp 2-pole switch 30 amp industrial grade |
30 amp double-pole Heavy duty double-pole switches to turn off both hot wires in 240 volt circuit. Always rated 240 volt. Buy: 30 amp motor switch 40 amp motor switch |
30 amp DPDT DPDT switch can be used to toggle between 2 different voltages. Buy: 30 amp DPDT switch Resource: Use this switch to toggle water heater between 120-240 volt |
Ordinary 15-20 amp Ordinary 15-20 amp toggle switch. Buy: 15 amp switch 20 amp switch |
pilot light switch Indicator light shows when Load is ON. Buy: Pilot light switch Resource: How to wire pilot light switch |
GFCI Switch Requires neutral wire. Add GFCI outlet to same box as switch. Buy: Leviton Combination GFCI Combination GFCI Amazon Resources: How to wire GFCI combo |
Combination Switch Requires neutral wire. Add outlet to same box as switch. Buy: Combination switch outlet Resources: How to wire GFCI combo |
3 & 4-way switch 4-way switch is used with two 3-way switches to add more switches to control one light. Always rated 120-277 volt. Buy: 4-way switch |
Double & triple switch Multiple switches in one box. Buy: Double switches Triple switches |
Center off Switch Momentary contact Use to activate delay timer or sound bell. Buy: Center off Switch Resources: How to wire delay timer |
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120Volt and 240Volt breakers Image shows 120Volt line and 240volt line. Both circuits have ground wire. Each 120 and 240 require two wires to complete circuit. 120V requires 1 hot and 1 neutral 240V requires 2 hots Ground wires are for safety. Resources: Read more about 240 volt Some 240Volt lines have additional neutral wire. However, neutral not necessary to complete 240Volt circuit. Some 240Volt lines have white and black instead of red and black Most service boxes today have separate Neutral and Ground busbars, but these busbars are bonded together electrically, and are the same. Illustration on left shows both Neutrals and Grounds on same side of box. In actual box, the Neutral is on right side and ground on left. Illustration shows separated neutral and ground so it is easier to illustrate wires leaving breakers. Resources: Color code and wire sizes Basic 120 volt and 240 volt water heater circuits How to wire 240 volt outlets |
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Add a switch to any outlet Add a switch and light to any outlet Maximum 12 boxes per circuit breaker. Drop power wire into outlet box. |
 Convert
switch to 3-way timerWhy are ST01 and Ei600 timers do NOT need neutral wire Because the timer is battery-operated. Battery lasts 2-3 years. Replace single pole switch with 3-way switch Then run wire to new box... install ST01 timer or 3-way switch into new box ST01 works with any voltage, including low voltage 24 V AC/DC/ or high voltage 208-240-277 ST01 is rated for 1HP motor at 120 volts AC, 2 Hp at 240 Volt AC Buy: Intermatic ST01c timer/ 1 year warranty ST01a almond Intermatic ST01K combination timer Ei600 5-year warranty timer at Amazon CR2 replacement battery at Amazon Resources: How to program and wire ST01 timer Load ratings for Intermatic timers/ pdf Load rating for ST01 timer: 120V ac, 6A, 208-277V ac; DC Loads 4A 12V dc, 2A 28V dc; Motors 1HP 120VAC, 2HP Resources: More uses for ST01 timer ST01 timer controls water heater or any 240 volt load Reverse ST01 using Intermatic air switch / Resource: Intermatic air switches Use ST01C for 4-way timer ST01 24 volt DC photoeye Convert single-pole switch into 3-way switch using ST01/ Resource: How to add a switch How to add 3-way switch ST01 timer controls HVAC |
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| How to add a 3-way switch | |
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Add new outlet New outlet is added to Any-outlet#1 Add new wire Run wire to new box Install ordinary outlet: Run wire to another new box Black wire is Hot.> connect to brass screw White wire is Neutral> connect to silver screw Code says max 12 boxes per circuit breaker Resources: Read pdf Figure wire size |
 | Neutral wire must connect
to combo switch. Neutral is normally two or more white wires covered with wire connector and pushed to back of box. If box does not have Neutral wire, the Neutral must be brought from any nearby outlet or ceiling box. Box must have neutral. Hot wire connects to both switch and outlet on left side of switch. Neutral wire connects to Outlet on right side of switch. Load Hot going to light connects to switch on right side of switch. |
 |  How to test for Hot and Neutral wire: Turn power off Separate all wires for testing except ground wires. Turn power on. Tape tester leads to wood sticks for safety. Keep hands away from power. Test each wire to bare ground wire. Tester lights up on Hot wire. Hot wire should be black (except 3-way switches) Test Hot wire to all other wires except ground Tester lights up on Neutral wire. Buy: Voltage neon testers at Amazon Electric testers at Amazon |
| Use only 600 volt wire. Lamp cord, extension cords are not rated 600 volt. Use copper wire only. Aluminum wire is fire risk and should be avoided or installed by professional. 30 amp breaker use 10 gauge /  Buy: 10-2 gauge/ 30 amp 10-3/ 30 amp Southwire electric tools |
Yellow
12 gauge 20 amp Yellow/ #12 gauge wire for 20 amp with ground Buy: 12-2 gauge/ 20 amp 12-3/ 20 amp NMB is house wiring UF is underground Rolls of stranded wire |
White
14 gauge 15 amp White/ #14 gauge wire for 15 amp with ground Buy: 14-2 gauge/ 15 amp 14-3/ 15 amp NMB is house wiring UF is underground |
 Buy: Armored cable |
 Southwire armored cable cutter Buy: Rolls of stranded wire |
Stranded wire  Buy: Rolls of stranded wire |
50-60
amp breaker use 6 gauge /  Buy: 6-2 wire Southwire electric tools NMB is house wiring UF is underground |
40-50
amp breaker use 8 gauge / Buy: 8-2 wire Southwire electric tools NMB is house wiring UF is underground |
  Copper ground wire Use same size as other wire in circuit Buy: 12 gauge copper ground wire Ground wire Green ground wire Ground pigtails Ground rods/ ground clamps at Amazon |
 Buy End cutting nippers at Amazon |
  When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistances on wire and creates weak point. Buy tools: Wire strippers at Amazon Linesman pliers Utility knife at Amazon |
 Buy: Multimeter Electrical testers |
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Resource: Electricity: The grid is defined by three parts: transmission, distribution and end user. The following links show how it works Power plant to end user power pole Power pole to residential breaker box Power pole to commercial breaker box How to wire residential electric How to wire commercial 3-phase Why you need ground wire How to wire 3-phase timer 3-phase water heater |
 Contactors/ relays |
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