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How to wire Intermatic GM40 series timer to control DC voltageApplies to GM40, GM40AV, GM40AVE, WHQ, GE 1500 series. Tork timers, Woods box timers |
| 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 |
 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 |
 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 |
GM40
 40 amp 120V-208V-240V-277V Dip switches to select voltage 7-day with 15 minute intervals or 24 hour with 1.75 hour intervals Buy Buy GM40 24 hour at Amazon Buy GM40 7-day at Amazon Buy: WHQ4 120-208-240-277Volt 24-hour at Amazon Resources How to wire GM 40 timer GM40 instruction manual Sell sheet with model numbers How to set analog timers Intermatic timers and manuals |
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 Permanent ON-OFF override |
GM40AV
40 amp 120V-208V-240V-277V Automatically detects voltage 24 hour, 15 minute intervals Power outage backup option Buy: GM40AV 120-208-240-277V at Amazon GM40AVQ w/ back-up battery at Amazon Buy GM40 24 hour at Amazon Buy GM40 7-day at Amazon Manuals/ Resource: GM40AV Manual GM40AV sell sheet |
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Permanent ON-OFF override |
GM40AVE
digital
40 amp 120V-208V-240V-277V Automatically detects voltage 7-day programmable, 20 on 20 off set points Power outage backup Buy: GM40AVE 120-208-240-277Volt at Amazon GM40AVE at Intermatic Manuals/Resources: GM40AVE manual GM40AVE sell sheet FM1D 20 setpoint programming FM2D 50 setpoint programming Intermatic timers and manuals |
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Woods Wifi 30 amp Woods 50054 WiFi contactor Auto detect voltage/ 120, 208, 240, 277 volt WiOn contactor connects to app on phone How to wire wifi Buy DEWENWILS brand wifi Wifi power switch WiOn contactor from Amazon GE z-wave contactor Resource: How to wire WiOn for 120 volt and 240 volt GE z-wave manual |
 Larger image Permanent ON-OFF override |
Woods
59402 discontinued Replace with Tork TU timer 40 amp 120V-208V-240V-277V Select voltage using jumpers 24 hour, 15 minute intervals Buy: Woods 59402 timer at Amazon GE 15135 24-hour/ 40 amp/ outdoor box Manuals/ resources Woods 59401 and 59402 manual Woods timers and manuals |
 GE timers and manuals |
GE
15135 40 amp 120V-208V-240V-277V Dip switches to select voltage 24 hour, 15 minute intervals Buy: GE 15135 24-hour/ 40 amp/ outdoor box at Amazon 56922 at Amazon Manuals/ Resources: GE 15207 manual How to wire GE indoor 15207 |
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GE
15136 digital 40 amp 120V-208V-240V-277V Dip switches to select voltage 7-day programmable, 9 on 9 off set points, with countdown and random options 3 month power outage back-up Buy: GE 15136/ 7 day/ 7 programs /40 amp/ outdoor metal box Resources: GE 15132 manual How to wire GE 15136 |
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 Larger image Permanent ON-OFF override |
Tork
TU series 40 amp 120V-208V-240V-277V Automatically detects voltage 24 hour 15 minute intervals Buy: Tork TU series DPDT/ 120-277V universal timer at Amazon Tork P1104-M 240Volt SPDT at Amazon Tork P1104FM 240V SPDT with fireman switch at Amazon Buy Tork DTU digital timer at Amazon Manuals/ Resources: Sell Sheet TU wiring manual TU instruction manual |
 Larger image Permanent ON-OFF override |
Tork
DTU
digital
40 amp 120V-208V-240V-277V Automatically detects voltage Replaces Intermatic GM40E 7-day programmable, 7 on 7 off set points, with random option. Power outage back-up Buy: DTU40 At Amazon Manuals/ resources DTU40 instruction manual |
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24 hour mechanical timers Long lasting Skip-a-day option Repairable with widely available parts Resources: Intermatic 24 hour timers Tork box timers Compare all box timers |
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GM 40 timer is NOT rated for DC voltage,
but can switch 24 DC volt line Wire GM40 timer to control DC motor: Use same diagram to control any single-phase voltage. Buy: Omron-DC-Power-Relay Resource: DC relays How to wire GM 40 timer |
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3-phase
Use GM40 to control 3-phase circuit Most buildings with 3-phase also have 120Volt outlets. Use 120volt to power timer. Wire timer as shown in illustration directly above. Timer opens-closes circuit to 3-pole contactor with 120Volt coil. Resources See more 3-phase How to wire GM40 timer |
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Buy Electronics Industrial supplies Tools and home improvement Home and garden Hayward pool Pentair pool Southwire electric |
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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 |
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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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