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How
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 Larger image ET1100 Series ET1105 , ET1115, ET1125 24-hour / 20 and 30 amp models/ 28 set points/ 120-208-240-277Volt 1 channel or 2 channel operation ... so can control up to 2 loads, each with different program. ET1125C offers SIM or IND for simultaneous or independent operation Can switch 120V, 208V, 240V, 277V AC voltages ... Can also switch 12-24v AC or DC Buy: ET1125 timer ET1725C timer ET8215 timer Resources All ET1100 series timer models Manual |
Larger image ET1700 Series/ 20 and 30 amp models/ 7-day 28 setpoints/ 120-208-240-277Volt Does not offer SIM or IND Can switch 120V, 208V, 240V, 277V AC voltages ... Can also switch 12-24v AC or DC Buy: ET1725C timer Resources All ET1700 series timer models Manual |
 ET8000 Series /7-day astronomic or programmable/ 1 or 2 channel/ 120-240-208-277Volt/ Does not offer SIM or IND Can switch 120V, 208V, 240V, 277V AC voltages ... Can also switch 12-24v AC or DC Buy: ET8215 timer Resources All ET8000 series timer models Manual |
| 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 |
 GFCI circuit breaker A GFCI circuit breaker will protect all boxes on circuit. Circuit must be grounded. Ground wire must be continuous and connected to each piece of equipment. White wire on circuit breaker must be connected to Neutral busbar inside the breaker panel. Buy GFCI circuit breakers |
Push down 1" wide Push down breaker Plug-in breaker Buy single-pole: Choose from 15 to 60 amp Eaton CL series Siemens 15-60 amp Single-pole tandem breaker Tandem breakers |
Push down 2" wide Push down breaker Plug-in breakers Buy double-pole: Choose from 15 to 125 amp Choose from 15 amp to 200 amp Eaton CL series circuit breaker Siemens circuit breaker Double pole GFCI |
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Select voltage Some timers have dip switches Newest timers such as ET9000 automatically detect line voltage The other ET series timers have a jumper for selecting voltage. Jumper is located on back of timer. By default, the timer arrives with jumper positioned for 240 volts (as illustrated). Jumper position determines voltage for running clock, timer electronics, and magnetic switches. The wiring terminals are dry and receive no power when power is applied to timer terminals 1 and 2. To select 120Volt. Lift and move selector from 240V position to 120Volt position, and push selector down. |
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Select function using jumper Some ET series models offer multiple function ET70000 and 90000 functions are programmed, and timer can perform multiple functions throughout week. Other ET models, such as ET1125 must be set for function ... and then timer stays in that function until jumper is moved again. Default setting is SIM for simultaneous. Both relays turn on-off at same time. Other functions include IND so that timer is able to control two separate loads, each with separate programming. |
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2 independent loads IND Maximum combined load 30 amps. Control Two 120V-277V loads with Hot and Neutral Control Two 208-240Volt loads with Hot Line1 and Hot Line2 Wire terminals without jumper from supply voltage to control any voltage with relays. Buy: ET1125 timer ET1725C timer ET8215 timer Resource: ET1125 manual Timer is shipped default 120Volts. For 208,240,277 volt, set jumper located on back of timer. Timer will automatically adjust for daylight savings timer, or can be disabled using jumper on back of timer. For independent load operation (2 channel operation), move jumper from default SIM (simultaneous) to IND (independent. Resource: Color code for wire |
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 ET1125C offers SIM or IND for simultaneous or independent operation.Example wiring shows how to switch one wire to turn 120V or 240V motor on and off. Applies to 208V and 277V also. ET series timer are not rated for 347V, 480V or 600V. If a suitable phase voltage is not available, then use buck-boost transformer. This is the correct wiring for 120 volt if local codes prohibit switching the Neutral Buy: ET1125 timer ET1725C timer ET8215 timer |
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 ET Series timers are rated for low voltage applications, both AC and DC.The timer clock and relay fuction must be powered by 120V etc on terminals 1 and 2. For example 120 V Hot and Neutral can be connected to terminals 1 and 2 to power the timer, then same 120V can be used to energize a 24VAC transformer, or 12-24VDC LED driver ... then switch the low voltage load using terminals 3-4 and 5-6. By code, for safety, a shield must be installed between higher voltage lines and low voltage line ... especially where pool equipment is used. Buy: ET1125 timer ET1725C timer ET8215 timer |
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 Example
wiring shows how to switch 1 wire to turn 240V motor on and offBuy: ET1125 timer ET1725C timer ET8215 timer |
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ET1125
controls 480Volt load SIM Use SIM or simultaneous, so both relays turn on-off at same time Timer shipped default SIM setting Change timer voltage selector to 277Volt. |
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ET1125 wiring 2
independent loads SIM Both loads turn ON at same time |
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ET1125
bell ringing SIM All bells ring at same time Program timer for Impulse or bell-ringing Buy: ET1125 timer ET1725C timer ET8215 timer |
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Change wiring from T104
mechanical timer to ET1725 |
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ET1125 controls 277Volt
load SIM For 3-phase 480V-277V: Bring one 480V Hot and a Neutral wire to timer to produce phase voltage of 277V Use SIM or simultaneous, so both relays turn on-off at same time Timer shipped default SIM setting Change timer voltage selector to 277Volt. ET1125 manual |
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ET7015 7-day timer Five-terminal timer wired for 240 Volts Selectable voltage 120 208 240 277 What do NO NC terminals mean? NO NC terminals explained: NO terminal is Normally Open, this terminal receives power ONLY when timer turns on NC terminal is Normally Closed, this terminal receives power and is on at all times EXCEPT when timer turns on, and then the NC turns off. |
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277 Volt timer
277 Volt 3-pole contactor 277V 480V 3 Phase service with system Neutral Buy: 90 amp 277V coil 3-pole lug terminals 75 amp 277V coil 3-pole lug terminals 30 amp 277V coil 3-pole How to wire 3-phase timer  Intermatic GM40 Tork DTU40 GE 15207 Intermatic T104 and T174 Square D 277 Volt contactor at Amazon |
| ET 170 series manual 7 day programmable |
Read manual to set jumpers
for selectable voltage Selectable voltage 120 208 240 277 |
Wiring ET173C and ET174C have 6 terminals and wire same as Fig 1 shown above ET175C has 5 terminals and wires same as Fig 6 shown below |
| ET270 series manual 7 day programmable 2 independent outlets |
120Volt timer 2 channel timer with selectable voltage Can operate 2 Loads with different schedule for each Load Maintained or momentary bell-ringing contacts |
Wiring Read manual for specific wiring options Wiring is similar to diagrams shown here but the 2-channel option complicates summary drawings. |
| ET1100 series manual 24 hour 14-ON and 14-OFF |
Selectable voltage 120 208
240 277 Read manual for PUL and SIM jumper 2-second pulse for mechanically held contactor = PUL Multiple Load simultaneously = SIM Independent Loads = IND (ET1125 only) |
Wiring ET1105 has 4 terminals and is wired like Fig shown above ET1115 has NO and NC terminals and is wired like Fig 6 shown below ET1125 has 6 terminals and is wired like Fig 1 shown above |
| ET 8000 series manual Astronomic dawn-dusk timer is not necessarily best choice for water heater timer |
Selectable voltage 120 208 240 277 | Wiring ET8015 has 4 terminals and wire same as ET102 Fig 2 shown above ET8215 ET has 6 terminals and wire same as Fig 1 shown above ET8115 has NO NC terminals same as Fig 6 shown below Many other wiring variations are possible |
 Intermatic 70815-71615 Manual |
24 volt ET70815CR24 and
ET71615CR24 Or selectable voltage ET70815CR and ET71615CR. 4 channel ET70615 or 8 channel ET70815. 24-Hour, 7-day, 365-day optional pulse, fixed switch, astronomic, interval, short-duration, timer with 8-year battery, with isolated NO and NC terminals that allow switching any voltage no matter which timer power voltage is selected. Each channel can have different timing schedule. Each channel can control any voltage, and voltage can be different for each channel. Replaceable logic module |
Wiring Read manual for specific wiring options. Wiring is similar to diagrams shown here but the 2-channel option complicates summary drawings. |
| ET70815CR ET70815CR24 | Intermatic-et71615cr | |
| Other ET timers. ET series plug-in type timers by UPM Paragon ET series Grasslin ET616 |
| Discontinued models | ||
 Larger image ET104C Manual ET104C discontinued at Amazon Replace with EH40 240 volt 30 amp Buy: 30 amp timers |
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ET104C 240volts/ 1 load
SPDT ET104C has selectable voltage that is preset to 240Volts Selectable voltage 120 208 240 277 Default voltage from factory is 240Volt Same illustration applies to ET173 and ET174 7-day timers If your timer has 4 terminals instead of 6, then same wiring applies, use diagram below ET104 24-hour timer with 4-ON and 4-OFF per day Buy ET1100 series for 24-hour 14-ON and 14-OFF per day |
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ET104C 240volts/ 1 load
SPST ET104 has 6 terminals, and ET102 has four terminals ET104C and ET102 have selectable voltage that is preset to 240Volts |
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ET104C 120volts/ 2 loads
SPDT ET104 has 6 terminals How to wire to control 2 separate 120Volt loads Factory default voltage is 240 |
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Resource: What is 3-phase electric: power plant to end user See inside main breaker box Basic house wiring |
| 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. 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 |
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 |
 Armored cable can be used as a grounded connection, and will protect wires from damage. Metal can be energized from an insulation failure. Non metallic flexible cables must carry ground wire, but does not have hazard of short circuit causing injury from shock. 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: Armored cable Southwire armored cable cutter Non-metallic flexible conduit Power whip Pull boxes |
Electrical tools must be insulated. Always best to disconnect power, but issues of insulation failure, lack of proper grounding, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems pose a risk to anyone working on electric power. Buy: Electrician tools kits Klein tools Tools kits |
 12 ga Stranded 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. Buy: Rolls of stranded wire |
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 resistances and heat on wire and creates possible weak point. Buy tools: Wire strippers at Amazon 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 |
 Use only solid copper wire, and no insulation under screw plate. Tighten screw very tight against copper wire |
 Larger image Both wires MUST be same gauge Straighten each wire Max 2 wires under screw plate Both wires same gauge |
 Larger image Connect stranded and solid with wire nut and run jumper to screw plate. Or add solder to stranded wire to make solid. See example image |
Use wire nut |
Use push-on wire connectors |
3 wires/ or different gauge wiresJoin wires with wire nut or push-on connectorRun jumper to screw terminal. Buy: Push on wire connectors at Amazon Red 3P connector (shown) for 10-14 gauge wire Lever nuts for stranded wire at Amazon Resource: How to select and install wire connector |
 Contactors/ relays |
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Buy
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