Stick men
Keep wires and conduit straight
Waterheatertimer.org
is a self-help site
How to wire 3-phase electric Figure Volts Amps Watts
How to install point of use water heater Point of use water heater
How to wire twist lock plugs How to install electric water heater Difference single-phase and 3-phase
How to wire twin timer
Compare 16 electric and 3 gas water heater timers How to wire transfer switch How to wire tankless electric
Type 1 and type 2 surge protection surge protection
Search waterheatertimer.org / all results
Search using Find button  

 Tweet button  
3 phase astronomic timer: 
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
6-2 wire
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
6-2 wire
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
armored cable
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
Southwire armored cable cutter
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
stranded wire
600 volt 12 ga Stranded wire ot THHN wire is good for conduit with multiple wires ... but stranded cannot be installed under screw terminals on outlets, switches, timers etc without risk ... of heat causing splayed strands ....that come loose ... and begin to arc. Connect stranded to short piece of solid copper wire, and attach solid to screw terminal. Do not solder residential or commercial wiring.

Project wire, extension cords, thermostat, bell and automotive wire are not rated for residential or commercial wiring. Only wire maked 600 volt can be used for permanent household wiring.
Buy:
Southwire 600 volt stranded wire
Rolls of stranded wire
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
multimeter
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 phase astronomic timer3 phase 4-wire

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.
 ST01CConnect load to timer blue wire.

Timer turns ON contactor...
Contactor controls 3-phase load.
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
Packard 3-pole contactor
Panel mount fuse holders up to 240 volt
Din Rail fuse holder up to 380 volt
CR2 replacement battery at Amazon
Resource:
ST01C manual
Sell sheet with model numbers
3 phase 3-wire
Alternate design without Neutral wire.
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
Panel mount fuse holders up to 240 volt
Din Rail fuse holder up to 380 volt

ST01C
Busman HKP-HH fuse holderDin rail fuseholder
Install fuse in-line so circuit can be turned on.
Multiple fuses and breakers on same circuit are fine.
Buy:
Din rail fuseholder
10 x 38 mm fuse
14 x 51mm fuseholder and fuse
Din rails

Buy:
Panel mount fuse holders at Amazon
Fuse blocks at Amazon
Ceramic fuses at Amazon
Fast acting ceramic fuses
3 phase photo eye Three-phase 4-wire 120-208-240-277 volt
Use dusk dawn photo eye.
Neutral wire required
Note Neutral wire connected to one side of contactor and to photoeye.
Fuse required to protect photo eye from over voltage
Three wires run to photo eye.
Photo eye black connects to Hot
Photo eye red connects to Load (contactor)
Photo eye white connects to Neutral.
For this illustation, select contactor with coil voltage that matches phase voltage. (measured between Hot wire and Neutral).

Buy:
120-277 volt photo eye
3-pole 277 volt contactor
3-pole 120 volt coil

208 volt photo eye
3-pole 208 volt contactor
480 volt photo eye
3-pole 480 volt contactor
3-pole conrtactors

Panel mount fuse holders up to 240 volt
Din Rail fuse holder up to 380 volt
ST01C
Larger image
LCD display is not lighted

Intermatic ST01C buttons
All Intermatic timers
Dusk-dawn astronomic timer

ST01C  7-day/ battery operated no neutral required / single-pole or 3-way
Ei600  / same as ST01 except 5 yr warranty instead of 1 yr warranty
/astronomic or programmable/  single-pole 3-way/ 1 yr warranty/ No neutral/ uses CR2 battery
Programmable or Astronomic dawn-dusk/ 6 ON and 6 OFF settings per 7-day week
Incandescent, CFL, LED, motors, ballast, DC loads/ AC and DC loads 24V up to 277Volt.
Permanent override/ No loss of memory in power outage or battery change

ST01C is white/ ST01AC is almond
Use deco wall plate
Buy:
Intermatic ST01 timer at Amazon

CR2 replacement battery at Amazon


Resource:
Intermatic timers: ST01C & Ei600
More wiring for ST01C + ST01C programming

Sell sheet with model numbers
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
240V ac, Ballast 16A 120V ac, 208-277V ac; Resistive 20A 120-277Vac.
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
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

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


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
        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.
contact block
Buy: Contact blocks at Amazon
Auxillary contact block at Amazon
LADT2 with 30 second delay
Dayton contact block
45EG20AF contactor Pull boxes/ metal
DTSP contactor bolted into a 6x6x4 enclosure using #8-32 bolts
Buy:
6x6x4 Metal box: has knock-outs for 1/2 and 3/4" ... must drill 1/2" hole for fuseholder, bolt holes to hold contactor, threaded holes for 10-32 ground screw, metal box must be grounded.
Indoor 6x6x4 metal pull box with cover and knock-outs/ Raco
Indoor 6x6x4 pull box with knockouts on 4 sides/ Wiegman
Indoor 6x6x4 pull box with knockouts on 4 sides/ Hoffman
Outdoor 6x6x4 box with bottom knockouts

Indoor 6x6x4 metal pull box with cover and knock-outs/ Raco
Indoor/ hinged door 10x10 x 6 / Bud Industries

Indoor / hinged door/ 6x8x4 box / Bud Industries


Bud industries boxes at Amazon
Arlington boxes at Amazon
6x6x4 enclosure Junction boxes/ Plastic and metal

Buy:
6x6x4 plastic box: no pre-drilled holes... must drill holes for Wire connections, 1/2" hole for fuseholder, 3/16" holes for bolts to hold contactor, plastic box does not need ground screw connected to box
Cantex 6x6x4 PVC plastic enclosure with cover at Amazon
Thomas and Betts 6x6x4 plastic with cover at Amazon
Bud industries 11x7x5 box without knockouts
Busman fuseholder




Busman fuse holder/ panel mount/ drill 1/2" hole
15 Amp ceramic fuseSome fuseholders accept terminal connections, some have solder-only connections. 
Fuse blocks have screw terminals.

Buy:

Panel mount fuse holders at Amazon
ANL fuseholder
Fuse blocks at Amazon
Din rail fuseholder
10 x 38 mm fuse
Ceramic fuses at Amazon
Fast acting ceramic fuses
Electrical terminals
surface mount fuseholder
Buy: fast and slow acting fuses:
Ceramic fuses at Amazon
Fast acting ceramic fuses
Din Rail fuse holder/ din rail mount/
Din rail is surface mount

Buy:
Din Rail fuse holder

Buy:
2T511GA Nema3R enclosure at Amazon
10 amp Relays
10 amp LY2 relays
LY3 relay
120 volt LY2
15 amp Din rail timer
Din rail Fuseholder
Resources:
Din rail timers
Off Delay timers
On delay timers
Build 3-phase astronomic timer
Build 2-speed timer for pump, motor etc

      Terminal kit     Terminals:
Crimp terminals onto stranded wire
Solder terminals onto solid wire
Use terminals to connect small wire to contactor
Buy:
Terminal kit at Amazon
Blue terminals for 16-14 gauge wire at Amazon
Yellow 12-10 gauge female terminal 16 pcs

Heavy-duty open frame relay
Optional box and cover for Magnecraft
Recommend this relay for motors exceeding 120 volt 1 HP/ 240 volt 2 HP
Magnecraft/ Siemens relay with NO NC terminals 120 volt coil or 24 volt coil etc
These relay are heavy-duty and best for frequent-operation, long term control of motor
Buy from my affiliate links
Magnecraft box and cover
Siemens power relays
Schneider W199 relay
NTE open frame relays
Packard DPDT fan relay
Tyco open frame relay
Contactors/ reliable for heavy amp loads
15 amp Relays for loads up to 10 amps

Resources:
Open frame wiring
How to reverse motor with switch
Difference between contactor and relay
Relays for DC motors and solar panels
Control motor with 2 switches
Start two motors at different times
   DPDT Switching relay
12 amps @ 120 volt, 6 amps @ 208-240 volt/ 3/4 HP
White Rodgers, Packard, Emerson, Edgewater, Mars, Honeywell, Jard, RBM etc
Buy:
Packard DPDT fan relay

Resource
Mars-relay.pdf
mars-general-purpose-switching-relay.pdf
Packard-switching-relay.pdf
Support the economy:
Buy water heaters from my associate links:

50 gallon Gas water heaters at Amazon
40 gallon gas water heaters at Amazon
50 gallon Electric water heaters at Amazon
40 gallon electric water heaters at Amazon
Hybrid / heat pump/ water heaters at Amazon

Resources:
How to install gas water heater
How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Resources:
Troubleshoot Gas valves with manuals
Icon gas valve

How to replace water heater element Waste King disposal
How to wire tankless electric

How to install tankless recirculation


Install point of use water heater
Titan tankless

Contactors/ relays
Install and troubleshoot garbage disposal Waste King disposal
Programmable timers

Woods timers
surge protection
Anode rods anode rods
Recirculation system

Tankless recirculation
Point of use water heater
Type 1 and type 2 surge protection surge protection
Buy
Electronic parts

Industrial supplies

Tools and home improvement

Home and garden

Hayward pool
Pentair pool

Southwire electric
Buy
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
box timers Resource:
Compare box timers
DPDT timers
Intermatic
Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
Digital control centers and parts
Tork control centers and parts
Subpanels
All control centers and parts
Enclosures
programmable timer Resource:
Programmable timers
Countdown timers
Off delay timers
On delay timers
Timer modules
Din rail
Twin & one-shot
Woods
Intermatic
Tork
Low voltage power packs Recirculation systems
Buy from my affiliate links every time/ thanks:
Amazon
As an Amazon Associate I earn from qualifying purchases
Enter Amazon from any link on my site, fill cart with any item ... purchases pay small commission

E-mail: geno03245w@gmail.com
My response might end up in spam folder, check email folders
Waterheatertimer on Twitter
Message thru facebook