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3P contactors with single-phase coil
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Pole contactors for 3-phase application 3P contactors with single-phase coil E-mail: geno03245w@gmail.com |
| 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 / 120-240 volt 30 amp outlet can be installed on 30 amp breaker only/ use 10 gauge wire ... cannot be connected to 15-20-40 amp breaker.  Orange/ #10 gauge wire, with ground ... 30 amp capacity. Safe maximum: 30 x 80% = 24 amps. Buy: 10-2 gauge/ 30 amp 10-3/ 30 amp Southwire electric tools |
Yellow
12 gauge 20 amp 120 volt 20 amp outlet can be installed on 20 amp breaker, but not 15 amp breaker/ use 12 ga wire. ... cannot be connected to 30-40 amp breaker. 1  Yellow/ #12 gauge wire, with ground ... 20 amp capacity. Safe maximum 16 amps. Buy: 12-2 gauge/ 20 amp 12-3/ 20 amp NMB is house wiring UF is underground Rolls of stranded wire HOOK UP Wires |
White
14 gauge 15 amp 120 volt 15 amp outlet, AFCI, GFCI, timer, switch etc can be installed on 15 or 20 amp breaker. Never connect 15 gauge wire to 20-30-40 amp breaker.  White/ #14 gauge wire, with ground ... 15 amp capacity. Safe maximum 12 amps. Buy: 14-2 gauge/ 15 amp 14-3/ 15 amp NMB is house wiring UF is underground |
| 50-60
amp breaker use 6 gauge / 240 volt 50 outlet can be installed on 50 amp breaker only  Buy: 6-2 wire Southwire electric tools NMB is house wiring UF is underground |
40-50
amp breaker use 8 gauge / 240 volt 40 amp outlet can be installed on 40 or 50 amp breaker only  Buy: 8-2 wire Southwire electric tools NMB is house wiring UF is underground |
  Copper ground wire. Every device, load, metal enclosure etc must be grounded. Ground wire must be continuous throughout installation, never switched on-off, never used as a Neutral wire. Generally ... 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 |
 Non metallic flexible cables must carry ground wire, but do not have hazard of short circuit causing injury from shock. Armored steel cable can be used as a grounded connection, and will protect wires from damage. Metal can be energized from an insulation failure. All conduit ...metal, plastic ... flexible and rigid ... must be attached to structure, and attached to enclosures, boxes. Movement, damage and deterioration are major cause of electrical failure. Buy: Non-metallic flexible conduit Power whip Armored cable Southwire armored cable cutter Pull boxes |
 Electrical tools must be insulated. Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off. Buy: Electrician tools kits KLEIN TOOLS Tools kits IRWIN tools KNIPEX Telephone cable knife Low Voltage Mounting Bracket for Telephone |
Push-on wire connectors in place of twist-on connectorsBuy:Push on wire connectors Amazon Red 3P connector for 10-14 gauge wire Lever connectors for stranded wire at Amazon HOOK UP Wires |
 Protect wiring from damage Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable. -Code says: Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15 Buy End cutting nippers at Amazon |
  Electrically insulated tools When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistance and heat on wire and creates possible weak point. Buy tools: KLEIN TOOLS Wire strippers at Amazon Electric Wire Stripping Machine Linesman pliers Utility knife at Amazon |
 Multimeters Voltage is tested across two separate wires. Ohms or resistance is tested across both ends of same wire. Amperage is tested along one or two points on same wire. Buy: Analog multimeter Multimeters at Amazon Klein multimeter Electric testers at Amazon Clampmeter for testing amp flow on line |
3-pole
contactors
 3-phase
contactorsSingle-phase coil voltages 24V, 120V, 208-240V, 277V, 480V Typical contactor rated 90 amps 50 hp 575 V AC 3 phases 50 hp 460 V AC 3 phases 30 hp 230 V AC 3 phases 20 hp 230 V AC 1 phase 7.5 hp 115 V AC 1 phase Resource: Typical wiring diagrams ''Choice of contactors for large amp loads is dependent upon many parameters i.e. operating voltage, size of contacts, number of operations, ambient temperature, type of load supplied etc. Higher the inductive load (motor etc) the more contactor life must be derated. Heat dissipation The ambient temperature around a contactor can affect its life expectancy. With high temperatures adversely affecting lifespan of all electric and electronic devices. It is recommended that heat dissipation or barrier is added between contactors and adjacent devices'' Do NOT add a vent fan to electrical boxes. The introduction of air supply is accelerant of fire hazard. All enclosures should be closed off with appropriate, electrically-approved cover for the enclosure |
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3-pole
contactor wired for DC
loads DC direct current is different than AC alternating current. Both types of electricity move electrons across conductive materials over time Both are available in variety of voltages AC electrons reverse direction or cycle with the generator rotation. DC electrons travel one direction from positive to negative. AC current is a wave that crosses zero volts each time generator rotates 50-60 times per second,. US 60 cycles. Europe Asia 50 cycles. DC current is a straight line. The voltage does not oscillate like AC. Electrons flow through circuit at same voltage at all times. When high voltage AC is turned off, the voltage drops to zero frequently. When AC voltage hits zero, then the arc or spark or heat is easy to extinguish. Result: AC switchgear like contactors last million repetitions without melting the points High voltage DC is different. When high voltage DC is turned off, the electrons keep pushing. Voltage never reaches zero. Result: DC voltage causes arc or spark or heat that is difficult to stop. Basically the electrons keep piling into the contactor. DC switchgear must be rated for DC voltages, and be capable of extinguishing DC arc. Illustration shows one method of extinguishing DC arc using 3-pole contactor. The circuit has 3 parallel switches on the positive wire. With a 4-pole contactor, 3 poles can be used to turn off Positive, and 1 pole to turn off Negative Add resistor in parallel with inductive winding* helps eliminate arcs. *Inductive winding is motor load Resources: Solar contactor/ pdf DC relays for solar DC contactor wiring diagrams/ pdf What is 3-phase electricity Can AC circuit breaker be used for DC |
 Heavy amp loads: 20-90 amps L terminals for Line wires from breaker T terminals for load wires 3-pole definite purpose Contactor sizes approximately: 20-40 amp 3" tall x 2.4" wide 50-60 amp 3.75" tall x 2.7 wide 75-90 amp 4.5' tall x 3.5 wide  Light amp loads: 8-12 amps/ contact block connection A1 A2 coil voltage L terminals for Line wires from breaker T terminals for load wires Terminals 13-14 NO / terminals 21-22 NC Other terminals apply to auxiliary blocks Resources: How to wire motor control contactor Difference between contactor and relay How to wire 3-phase DC relays for solar power |
Buy
3-pole contactors/ AC ratings Buy manufacturer: Packard 3-pole contactor Brah contactors Market Forge contactor Schneider contactor at Amazon Kripal 3-pole contactor/ they email asking which coil voltage Furnas contactor at Amazon Siemens 3-pole contactor Siemens 3RT motor contactor Eaton 3 pole contactor with contact block connection Allen-Bradley 3 pole contactor Migro contactor Fasco 3-pole contactor Mars 2-pole and 3-pole contactors at Amazon By coil voltage and amp rating 3 pole 24Volt coil 40 amp 3-pole 24V coil Packard 50 amp 3-pole 24V coil Mars 60 amp 3-pole 24V coil Packard 75 amp 3-pole 24V coil Mars 75 amp 3-pole 24V coil Norak 3--pole 24 Volt DC coil Siemens 3RT10 up to 460 volt 5 Hp with auxiliary contacts 3-pole 120Volt coil 25 amp 3-pole 120V coil Brah 30 amp 120 volt coil Packard 30 amp 3-pole 120V coil Brah 30 amp 120 volt Mars 30 amp 120 coil Eaton 40 amp 120V coil at Amazon / Packard 50 amp 120v coil Mars 50 amp 3-pole Migro 60 amp 3-pole 120Volt coil Packard 75 amp 3-pole 120V coil Mars 90 amp 3-pole 120 volt coil Square D 100 amp 3-pole Kripal 3 pole 208-240Volt coil 30 amp 3-pole 240V coil 30 amp 208-240 coil Mars 40 amp 208-240 volt Eaton 40 amp 208-240 Mars 50 amp 208-240 V Mars 60 amp 240 volt Mars 60 amp 3-pole 240V coil Mars 90 amp 3-pole 208-240Volt coil Mars 3 pole 277volt coil 3-pole contactors with 277V coil 30 amp 277V coil 50 amp 3-pole 277V coil Mars 60 amp 277V coil Mars 75 amp 277V coil Mars 90 amp 277 V coil Mars 3 pole 480Volt coil 30 amp 480V coil Mars 40 amp 480V coil Mars 50 amp 480V coil Noark 50 amp 480V coil Mars 60 amp 480V coil Mars 75 amp 480V coil Mars 90 amp 480V coil Mars Resource: Mars-Furnas contactor .pdf |
| Manuals | Resources Mars contactor .pdf Mars-Furnas contactor .pdf Eaton contactor .pdf Eaton contactor .pdf Eaton .pdf Schneider contactor Contactor dimensions Fasco / pdf Furnas / pdf Switch at cross zero |
| 4 pole contactors |
Buy
4 pole contactors Eaton 4 pole contactor Siemens 4-pole contactor Mars 4-pole contactor Schneider 4-pole contactor < |
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Kripal
contactor Factory-installed auxiliary contacts with 2 NO and 2 NC Snap onto sides of contactor Auxiliary contacts activate when contactor turns on-off Kripal contactors are relatively inexpensive and very versatile Available in all amperages, with interchangeable coils Din rail or surface mount  Larger image Buy: Kripal 3-pole contactor/ they email asking which coil voltage |
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 Auxiliary
contacts or auxiliary switch: side-mount/
factory-installed or separate
optionMost snap on without tools, or might require small screwdriver Most auxiliary contacts have 1 NO and 1 NC Kripal auxiliary contacts are factory-installed. Snap off with small screwdriver. Push center contact block connection fully down to re-install Buy: Kripal 3-pole contactor/ they email asking which coil voltage Square D Auxiliary contacts Schneider Auxiliary contactor Eaton Auxiliary contacts Siemens auxiliary contact Siemens Auxiliary contactor Mars Auxiliary contactor Noark auxiliary contact Furnas Auxiliary contactor |
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Contact
blocks/ pneumatic timer attachments. Activated by mechanical action of contactor, instead of electric current. On delay timers delay start time./ Once the timer block activates, the countdown begins. When countdown ends, the timer's internal relay activates. Adding timer block, allows the contactor to control additional circuit with time delay.  Buy Contact blocks at Amazon Auxillary contact block at Amazon LADT2 with 30 second delay Dayton contact block Resource: How to wire contactor block |
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Timer
for 3-phase Load How to wire 3-phase timer |
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Example
3 phase
switch/timer circuit Wire colors vary 3-phase breaker located in panel 3-phase 3-wire goes to contactor (or motor starter) and then to motor. Grounding indicated, but ground wire not shown No neutral wire shown, and not needed for example motor circuit 2 Hot wires pulled from 3-phase go to double-pole switch or timer. Switch or timer activates motor starter or contactor, which starts motor. Fused disconnected added between breaker and starter and motor, and is located at motor. Required by code to protect anyone servicing motor and to protect wires and motor from overheat.. Fused disconnect added between 3-phase and double-pole switch or timer. Required by code to protect anyone working on circuit, and to protect wires, switch and contactor Buy: 3-pole contactors at Amazon 3-pole disconnect at Amazon Leviton MS302-DS 600Volt 30 amp double-pole motor switch at Amazon Resource: How to wire 3-phase timer 3-phase motor starter wiring/ pdf |
Multimeter Test for breaks in wire/ Test for voltage Most appliance require 80% rated voltage to function correctly Buy Analog multimeter Multimeters at Amazon Klein multimeter Electric testers at Amazon Clampmeter for testing amp flow on line Resource: How to test and replace element How to test thermocouple Element tests for 120 volts How to test wire |
 Safety when testing wires: Never touch wet or previously flooded appliance. Never stand on wet surface when working on electric. Never stand on bare soil, put down dry boards. Tape tester leads to wood sticks to keep hands away from power. Use non-contact voltage tester before touching wires. Never touch or lean into any made of metal. Remove metal objects from pockets. Do not use oxygen or fuel accelerants in same room as electrical repairs Resource: Basic house wiring |
 Non-contact voltage tester Test for power without touching connectors NEVER assume power is OFF Buy: Non-contact voltage tester Amazon Electric testers at Amazon Resource: How to test electric power is off |
 120 volt 15 amp devices
including GFCI, timers, switches, plugs, wifi controls etc can be
installed on 15 or 20
amp
breaker.120 volt GFCI, outlet, receptacle that is rated 20 amp can be installed on 20 amp breaker only, but NOT on 15 amp breaker. Buy 15 amp GFCI 20 amp GFCI  |
Buy Basic electric book Home plumbing/ electrical codes  Or learn about basic household electricity... use and search my site/ Resource Safe electric wiring Basic house wiring |
 Use outlet tester to check for correct wiring on any 120 volt straight-blade outlet. Buy: Klein testers Outlet tester Circuit breaker finder Electric usage monitor |
Non metallic flexible cables must carry ground wire, but do not have hazard of short circuit causing injury from shock. Armored steel cable can be used as a grounded connection, and will protect wires from damage. Metal can be energized from an insulation failure. All conduit ...metal, plastic ... flexible and rigid ... must be attached to structure, and attached to enclosures, boxes. Movement, damage and deterioration are major cause of electrical failure. Buy: Non-metallic flexible conduit Power whip Armored cable Southwire armored cable cutter Pull boxes |
Electrical tools must be insulated. Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off. Buy: Electrician tools kits KLEIN TOOLS Tools kits IRWIN tools KNIPEX |
Connect wire to screw terminal Use only 600 volt solid copper wire. Do not use stranded wire or extension cord. Do not use solder anywhere on residential 120-240 volt wiring. Attach electric installation to structure. Tighten screws very tight against wire.  Buy: NEC books Dewalt plumbing/ electrical codes Basic electric book National electric code guide/ illustrated Resources: How to twist wire How to select and install twist-on wire connectors |
 Weatherproof
lever switch on outdoor lightsSafely operate outdoor toggle switch Replaces outdoor cover Install over top of ordinary switch Works with single-pole, double-pole, 3PST, 3-way, 4-way switches etc Use weatherproof box for outdoor Can be used indoor or outdoor Buy: Best choice: Cantex lever switch Outdoor lever switches at Amazon Lever switches Resource Cantex-toggle-switch-covers.pdf Cantex-PVC-junction-boxes.pdf |
Buy: |
Push-on wire connectors in place of twist-on connectorsBuy:Push on wire connectors Amazon Red 3P connector for 10-14 gauge wire Lever connectors for stranded wire at Amazon |
Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable. Code -Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15 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 Pro linesman plier Needle nose pliers End cutting nippers at Amazon |
 6" Pull box Junction boxes for conduit and wiring Buy: Bud industries 6x6x4 best value/ no KO Raco 6x6x4 metal pull box Wiegman 6x6x4 pull box Hoffman 6x6x4 pull box Adamax raintight enclosure Raintight 6x6x4 box Pull boxes Buy: Pull boxes Polycarbonite boxes Resource: Enclosures and boxes |
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Tools DEWALT Black and Decker Stanley SKIL Makita Porter-Cable Bosch Irwin Hand tools Klein hand tools Fluke electrical testing Dremel hobby tools Campbell Hausfeld air powered Tekton automotive Powerbuilt automotive Saws and saw blades |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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