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How to install 3-phase timer

Electricians forum
Engineering toolbox
3-phase electric meter
Formulas for 3-phase
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
armored cable
Buy:
Armored cable
Southwire armored cable cutter
Southwire armored cable cutter
Buy:
Rolls of stranded wire

Stranded wire
stranded wire
Buy:
Rolls of stranded wire
50-60 amp breaker use 6 gauge /
6-2 wire
Buy:
6-2 wire
Southwire electric tools
NMB is house wiring
UF is underground
40-50 amp breaker use 8 gauge /
6-2 wire
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


Buy tools:
Wire strippers at Amazon
Linesman pliers
Utility knife at Amazon
multimeter
Buy:
Multimeter
Electrical testers
3-phase motor wiringExample 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
3 phase circuitResource
How to wire 3-phase timer
3-phase motor starter wiring/ pdf
Buy:
Resources for 3-pole contactors
3-pole contactors at Amazon
3-pole disconnect at Amazon
Leviton MS302-DS 600Volt 30 amp double-pole motor switch at Amazon
Resources for 3-pole contactors
277 volt timer
Timer draws power from 3 phase line of 3-phase main panel
Timer for 480 Volt
480 volt timer

Start with Intermatic 240 volt T104 40 amp timer -or- T174 w day-skipper

Change to 480Volt timer by changing clock motor from 240V WG1573 to 480V WG1576
Buy:
T104 timer
T174 timer
480 volt clock motor

Resources:
How to wire T104 timer
T100 series timers and manuals
How to set and operate T104 timer
208-240 Volt timer
208-240 Volt 3-pole contactor

Buy:
Resources for 3-pole contactors
3-pole contactors at Amazon
208-240 3-pole contactor

Resource
Intermatic T104 and T174
GM40
DTU 40
Fuseholder
120 Volt timer
120 Volt 3-pole contactor
Control any 3-phase voltage
Buildings with 3-phase power also have Neutral wire used to power ordinary 120Volt outlets.

1) Use 120 Volt timer.
2) Install 3-pole contactor with 120Volt coil
3) Timer controls 120Volt coil.
4) 3-pole contactor turns 3-phase power ON-andOFF.

Examples of this timer:
Intermatic EH10 7-day programmable
Intermatic T101 24-hour analog
Repeat cycle timers
Dawn-dusk timer
365-day programmable timers
277Volt 24-hr analog timer

Resource
Resources for 3-pole contactors
3-pole contactors
3 phase tiimer 120 Volt timer
24 Volt 3-pole contactor


Buy:
Resources for 3-pole contactors
3-pole contactors at Amazon

Resource:
ET series timers and manuals/ 120V Neutral to terminal 1, 120V hot to terminal 2/ contactor wires to terminals 3 and 4
GM seriers timer and manuals/ 120V to terminals L1 and L2/ contactor wires to terminal COM and NO terminals
3-phase off delay timer 3-phase off delay timer
Other applications for timer .. wiring not illustrated here: Off-delay, repeat cycle, delay on break, pulse generator, latching, single shot.
Input voltage 12V - 240 volt (50-60 Hz)
Indicator lights
.1 seconds to 10 days

Buy:
Elko delay timer
Migro delay timer
Migro relays and timers

Resources:
CRM-93H   10-function
CRM-91H  10 function
CRM-82 two-function:
Delay timer for motor or pump/ 120Volt to 240Volt
Timer controls LC1D contactor
Buy
120 volt 7-day timer with 120 volt coil 30 amp contactor
240 volt timer
240 volt coil 32 amp contactor
Schneider contactor
Motor contactors

Buy: fuseholder:
Buy fuseholder at Amazon
Buy fuseholders at Amazon

Buy:
THC 15 timers
THC 15 120 volt

Resources:
More DIN rail timers
Fuseholder
Phase monitor
Protect circuit in event of low voltage on 1 line.

Buy:
Single phase 95-270 volt range
IMC402
3-phase 80-300 volt range
ICM phase monitor

Resources:
Fuseholders
IMC 402 pdf
IMC400 manual
Siemens .pdf
How to wire phase monitors
Tork timers and manuals
Tork-DTU40
How to wire Intermatic GM40
Intermatic GM series
Troubleshoot Intermatic
trippers and parts
 Intermatic parts
Intermatic EH40 and WH40
  
Intermatic T-101 T103 T104
 Intermatic T104P201
T1906 and T1905
  

GE box timers
Wire GE 15136 timer
Intermatic ET series
Intermatic ET104C
Pool timers and manuals
Tork pool timers and manuals
Intermatic T104P201
3 phase astronomic timer 3 phase 4-wire
Dawn-dusk option:
12-24-36 volt AC-DC
120-208-240-277 VAC


Use with 120-208, High leg Delta, 240, 277-480.
ST01 battery-operated timer is dusk-dawn programmable timer rated for 12-24 V AC/DC and 120-208-240-277V AC.
Not rated for 480, 600 volt.
Rated for inductive loads (contactor)

Timer powered by CR2 battery/ requires no voltage to operate switching.
Cold weather: Battery cannot be exposed to freezing temps beyond 22 days.

Cap red wire for dusk-dawn operation.
OR connect red and blue timer wires together for reverse dawn-dusk operation.
Fuse protects 15 amp timer. Connect power to timer black wire. Connect load to timer blue wire.
For this illustation, select contactor with coil voltage that matches phase voltage. (measured between Hot wire and Neutral). 3-phase wire colors vary.

Buy:
Intermatic ST01 timer
Ei600 5-year warranty timer
CR2 replacement battery at Amazon
Parking lot timer3 phase 3-wire
Dawn-dusk option:
12-24-36 volt AC-DC
120-208-240-277 VAC

Use with 120-208, high leg delta, 240 ... but not 277-480 since 2 hot legs would pull 480 volt.
Timer not rated for 480, 600 volt.
For this illustation, select contactor with coil voltage that matches line voltage (measured across 2 Hot wires).
Buy:
Intermatic ST01 timer
Ei600 5-year warranty timer
CR2 replacement battery at Amazon
Control secondary circuit with auxiliary contacts Add delay circuit using contractor block
Auxiliary contacts
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

Buy Contact blocks at Amazon
Delay contact block at Amazon
Unicell contact block
Dayton contact block

Resource:
How to wire contactor block  
3-pole contactor
Heavy amp loads: 20-90 amps
L terminals for Line wires from breaker
T terminals for load wires

3-pole contactor
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
3-pole contactor
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

Wiring for DC loads
DC contactor
DC circuit breaker
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

90 amp 3-pole 24Volt lug connection 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 Norak
50 amp 120v coil Mars
50 amp 3-pole Migro
60 amp 3-pole 120Volt coil Packard
60 amp 3-pole 120V coil Mars
75 amp 3-pole 120V coil Norak
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
75 amp 3-pole 240V coil Norak
90 amp 3-pole 240Volt coil Norak
90 amp 3-pole 208-240Volt coil Mars


3 pole 277volt coil
20 amp 3-pole 277V coil Norak
30 amp 277V coil 3-pole Norak
30 amp 277V coil Mars
40 amp 3-pole 277V coil Norak
50 amp 3-pole 277V coil Norak
50 amp 3-pole 277V coil Mars
60 amp 3-pole 277v coil Norak
60 amp 277V coil Mars
75 amp 277V coil 3-pole Norak
75 amp 277V coil Mars
90 amp 277V coil 3-pole lug terminals Norak
90 amp 277 V coil Mars

3 pole 480Volt coil
30 amp 480V coil Mars

40 amp 480V coil at Amazon/ Brah
40 amp 480V coil Noark
40 amp 480V coil Mars
50 amp 480V coil Noark
50 amp 480V coil Mars
60 amp 480V coil Noark
60 amp 480V coil Mars
75 amp 480V coil Noark at Amazon
75 amp 480V coil Mars
90 amp 480V coil Noark at Amazon
90 amp 480V coil Mars

Resource:
Mars-Furnas contactor .pdf
Control 3-phase using 120Volt timer with 4SP & 3SP relays
Same wiring applies to both timers shown
Intermatic T7401B timer
Larger image
120V or 277V

Intermatic T7401B 120Volt 7-day timer

Intermatic T7402 277Volt 7-day timer

Resource:
T7000B Sell sheet

Minimum 2 hour ON-OFF
21 ON-OFF settings per week
T7041B wiring for 3-phase
Tork 7300 timer Tork 7300 24-hour Timer
3SP relays
120Volt clock motor
8-14 gauge wire
40 amp contacts
Single-phase -or- 3-phase 3-wire
Resource:
Tork timers and manuals
3-phase timer
Larger image
Intermatic astronomic timer

Intermatic V45000 astronomic 24-hour dawn-to-dusk timer
3SP relays
120Volt clock motor
8-14 gauge wire
40 amp contacts
Single-phase -or- 3-phase 3-wire
Resource:
Instruction manual 120V
Intermatic timers and manuals
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surge protection
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box timers Resource:
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programmable timer Resource:
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