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SPST 240-277 volt timer for lights, motor. pump, water heater etc
Resource: Safe electric wiring
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How to wire T102 timer SPST 240-277 volt timer for lights, motor. pump, water heater etc Resource: Safe electric wiring |
 Large image Indoor metal box SPST 240 volt Buy: T102 series at Amazon |
 Larger image Indoor metal box/ day skipper Buy: T172 at Amazon |
 Larger image 240 volt Mechanism only Buy: T102M at Amazon |
 Larger image Outdoor metal box Buy: T102R at Amazon |
 Larger image Outdoor plastic box Buy: T102P 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 / 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 |
| Wiring for T102 | ||
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T-102
timer 208-240 volts Hot1 and Hot2 connect to Terminals 1 and A Hot 2 to Load connects to Terminal A Hot1 to load connects to Terminal 2 Timer clock motor is pre-wired for this installation When white wire is used to carry voltage, instead of used as neutral wire, then add black tape to notify next electrician what wiring is present.  Resources: T102 manual T172 manual: Enclosures |
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T-102
timer 277 volts T102 is for voltages from 208V to 240V to 277V Hot connects to Terminal 1 All Neutrals connect to Terminal A Hot to load connects to Terminal 2 Timer clock motor is pre-wired for this installation  Resource How to wire 3-phase timer |
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T102 timer is fully repairable Resource: How to take apart and repair T100 series timers |
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T-102 clock motor 240 Volts
(208-277V) Buy: WG1573 for 60 Hz 240V |
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T-102 clock motor 240 Volts (208-277V) Buy: WG1573 for 60 Hz 240V at Amazon |
Change
T102 timer to different voltage by changing clock motor
>>>>>
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T-102 timer changed to 24 Volts CW190-10 for 24 volt 60 Hz 24V at Intermatic |
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T-102 timer changed to 120 Volts Buy: WG1570 for 60 Hz 120V at Amazon |
T-102 changed to 50 Hz: WG1571-10D motor for 50 Hz 120Volt WG1574-10D motor for 50Hz 208-277V Amazon |
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T-102 timer changed to 480 Volts Buy: WG1576 for 60 Hz 480V at Amazon |
How to replace Intermatic clock motor | |
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Trippers Dial can have 12 sets ON-OFF trippers Buy: 156T1978 trippers Amazon |
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Convert
indoor timer into outdoor timer: Buy different enclosure. Use thumb spring located top inside timer to remove mechanism from enclosure Buy: 2T2502GA beige plastic Outdoor box at Amazon Resource Enclosures |
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Insulators -Keep insulator over screw terminals to prevent accidental electrocution hazard. Insulator pushes down over two knobs located on timer mechaism below the yellow dial. Translucent 124T1948 single pole T101, T102, T105 124T1948 single pole T171, T172, T175 Buy: 124T1948 at Amazon Black rigid 124T2411A rigid Buy:\ At Amazon |
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Installation tips -Secure wire or conduit to enclosure. All wires, enclosures and conduit must be secured to structure. -Always use solid copper wire under timer screw terminals ... stranded wire can come loose and cause fires. -Keep enclosure door closed to prevent possible fire hazard from spreading. -Keep insulator over screw terminals to prevent accidental electrocution hazard. -Install enclosures away from hazards such as lawn mower or machinery. -Install outdoor boxes in sheltered area if possible and 12" above anticipated snowfall. -For safety, make sure Load is grounded correctly. People often forget to securely join the ground wires inside timer because wire sometimes gets a bit short. Buy extra length of wire from box store. Load must be grounded. Why you need ground wire |
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Use correct wire and breaker Oversized is OK, undersized is hazard Look at label on load to determind correct size wire and breaker Watts divided by volts = amps If Load is 240 volt, and watts is 4500 = 18.75 amps. Next calculate 80% safe maximum. 20 amp breaker x .80 = 16 amps safe maximum 30 amp breaker x .80 = 24 amps safe maximum The calculation shows that 4500 watt load requires 30 amp breaker and 10 gauge wire up to 150 feet. Longer distance, use larger wire and breaker. Buy from my affiliate links: Southwire cable and tools Resource: Figure volts amps watts |
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 Keep wires straightUse solid copper wire If wiring terminal or end of wire are covered with green, use emery board to clean terminal and sandpaper to clean wire. |
 Applies to timers, wifi etc/ info source Intermatic |
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Both
wires MUST be same gauge Straighten each wire If wire is corroded or overheated, clean the end with sandpaper and wipe with cloth. If wire has been melted, cut back and reattach, or replace wire. Tighten screw very tight against copper wire |
 Use wire connector |
Use push-on wire connectors |
3 wires/ or different gauge wires Join wires with wire connector or push-on connector Run jumper to screw terminal. Buy: Push on wire connectors at Amazon Red 3P connector (shown) for 10-14 gauge wire Connector assortment Resource: How to select and install wire connector |
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Fire safety/ Do not put stranded
wire under screw plate Problem1: picture shows 2 different gauge wires under screw plate Problem2: Stranded wire will expand and contract and come loose under screw plate, even if it is the only wire under the screw plate. Attach stranded wire and solid wire with connector, and run solid copper jumper wire to screw terminal Resources: Timer caught fire Load ratings for Intermatic timers/ pdf |
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| Wiring for other T100 series timers |
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T101 Wiring: How to wire T101 and T171 series timers |
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T101B Wiring: How to wire T101B timer Applies to T101B with separate wiring terminals |
| T103 Wiring: How to wire T103 and T173 series timers |
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T104 Wiring: How to wire T104 timer Applies to T103, T103R, T103P, T103M, T103PCD82, T173, T173R T173M see all models |
| How to wire Intermatic T102: How to wire T102 and T172 series timers |
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How to wire Intermatic
T105: How to wire T105 timer Nema 1 indoor enclosure/ To convert to 208-277V operation, replace WG1570 clock motor with WG1573 clock motor |
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How to wire Intermatic T106
timer: How to wire T106 timer Nema 3R indoor-outdoor enclosure To convert to 120V operation, replace WG1573 clock motor with WG1570 clock motor |
| How to wire Intermatic pool timer: How to wire pool timers |
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Control centers: Control centers: + manuals and parts All control centers and parts |
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Intermatic/ Grasslin enclosures Metal and plastic enclosures |
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| Intermatic sprinkler timers and wiring |  How to wire Sprinkler timers + rain sensor + manuals + buying options How to connect rain sensor when timer does not have rain terminals How to Set & Troubleshoot Intermatic sprinkler timer/ pdf |
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Multi-function timers and wiring 40 amp Multi function timers and manuals |
 
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T1906-5 T1975-6 heavy duty timers 20 amp Multi function timers and manuals |
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ET
series digital timers/ 20-30 amp/ 120-277 volt/ multi-channel
(same timer controls two circuits with different programming) ET series timers |
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Timer modules/ 16 amp/ 12-240 volt Timer modules/ 16 amp/ 12 to 240 volt |
 
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 Contactors/ relays |
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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 |
