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Override bathroom heater with 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  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 |
 Sticks out 1" from wall Rough-in opening 8" x 10-1/4" Overall size 9" x 12" |
Wall
heater/
forced fan blows heated air/ 120-240 Volt Hardwired/ with thermostat
Use spring-wound timers (shown below) to control wall heaters/ set thermostat high, and control heater with 15-30 minute timer. Spring wound timers work with 120V or 240V 120-240 Volt units / complete kit with thermostat and wall can/ will turn ON if temperature drops low enough Use spring-wound timer, or ordinary 20 amp wall switch 240 volt can be turned off by turning off one of the two hot wires Clean elements and unit once per year for long-term durability Installation: 3 feet clearance in front/ 12" clearance top & bottom, and 6" each side Buy: 2000 watt / 208-240 volt/ 8.3 amp / electric heater at Amazon 1000 watt / 120 volt/ 8.3 amp / electric heater at Amazon 240V 58T2 CCT2W 17 amp double pole replacement thermostat + knob 120V 58T1 CCT1W 17 amp single pole replacement thermostat + knob Resource Cadet wall heater specification sheet Cadet wall heater installation Cadet wall heater safety tips/ pdf side Match watt load with wire and breaker Wiring: Override wall heater with timer |
  Replacement knob |
Intermatic
FD series/ replaces
single-pole or double-pole switch
Models: 15 minute to 12 hours 1 HP 125V / 2HP 250V SPST & & SPDT & DPST models Hold and no-hold models Two DPDT timers can be used as 3-way timer Inductive: 20 Amp 125 VAC 50/60 Hz; 10 Amp 250 VAC 50/60 Hz; 10 Amp 277 VAC 50/60 Hz Tungsten: 7 Amp 125 VAC Buy: Intermatic FD timer at Amazon Resources Sell sheet with models and wiring Sell sheet with models and wiring for motor applications and 3-phase and Off delay |
 Spring
timers do not need Neutral wire, fit any type electric plate, Rated 120-240 volt 20 amp Buy: Intermatic FD timer Intermatic FF series timer Westek countdown timers Woods 59714 white Woods 59715 almond Tork spring wound timer |
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 Example cadet heater watt, volt
amp chartBasic formula: volts x amps = watts (power). For new installation, add up all loads on the circuit.  A load is any device that consumes electric power,
such as light, fan, shoe buffer, radio etc. Each load has a watt rating on the label that shows amount of power it consumes. Add up total watt usage on circuit and divide by volts to figure amp consumption on the breaker ... a 20 amp 120 volt breaker has a safe max of 20 x 80% = 16 amps. If the 20 amp 120 volt circuit is using 840 watts, then divide that by 120 volt to yield 7 amp consumption. If your 120 volt circuit consumes 7 amps, and you add 1000 watt, 8 amp cadet heater, then that is a total of 16 watts, and perfectly fine. You cannot add the 1500 watt 12.5 amp heater. FYI, the 1500 watt heater requires a dedicated breaker that serves no other loads. Read about dedicated circuit breaker Going over the 80% safe max of 16 amps, up to 20 amps on a 20 amp breaker is ok if the circuit does not remain above the 16 amp safe max all the time, or continuously. Remember, all loads on the circuit are normally not running at one time, and some loads can be turned off to free up amp capacity on the circuit. |
Override 240 volt wall heater with timer or switchCadet heater uses 8.3 amps Suggest using 20 amp breaker and 12 gauge wire Use timer or switch that is rated for at least 15 amps. 20 amp switch or timer is best. Mechanical spring-wound timer or on-off switch is rated 20 amp is best recommendation  DO
NOT BYPASS
THERMOSTAT ON CADETCadet thermostat has overheat protection to prevent run-away heating  240
volt circuit can be turned on-off using only one wire. Not necessary to
turn off both Hot wires with 240 volt.Illustration shows SPST FD series Intermatic spring-wound timer Rated for 10 amps @ 250 volt and for spas and heaters and fans Buy: Intermatic FD timer at Amazon  Wire clampsRomex connector Plastic cable connector Do not use homemade boxes or
non-electrically rated boxes, clamps, covers etc ... use only 600 volt
electrical wire, box etc to prevent fire, risk of problems etc.
Never use extension cord.
ResourcesCompare countdown timer How to install old work box Enclosure code |
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 Wiring for Spring-wound timerSuggest spring-wound timer for simple wiring. No neutral wire needed, works with 120V or 240V Use same wiring diagram for either 120V or 240V volt. If wiring for 120V, then the Black wire is Hot and there will be no red wire Safe
maximum for 20 amp breaker and 12 gauge wire is 20 x 80% = 16 amps (for
continuously operating loads)Buy: Intermatic FD timer 17 amp double pole replacement thermostat + knob 17 amp single pole replacement thermostat + knob Resources Compare countdown timer horsepower ratings Safe electric wiring |
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 By-pass cadet thermostatNot recommended This example shows how to wire timer to by-pass the cadet thermostat. Wiring tips for all diagrams Access to the thermostat is possible, but wiring space is limited. Use twist on wire connectors ... always best choice for wire connections. Never use tape or solder to make connections for any type residential wiring. Must use 600 volt solid copper wire. Stranded wire is not best choice for connecting to screw terminals on timer ... can come loose and cause arc and failure. Use a short piece of solid copper and connect to stranded wire using twist on connector. Connectors must cover all copper wire, and be secure so they cannot fall off. The heat produced by wall heater can cause deterioration of wires and wire connectors over time. Make sure all connections are inside a covered enclosure that is rated for electrical wiring (not homemade boxes, enclosures etc).  
Buy Twist on wire connectors Southwire electric Electricians tool kit |
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 Wiring for electronic countdown timer Battery-operated: No neutral wire needed. Works with 120V or 240V. Use same wiring diagram for either 120V or 240V volt. Up to 16 amps resistance load (heat element is resistance load). Calculations 120 volts x 16 amp timer = maximum 1920 watt heater safer maximum would
be 1000-1200 watt
240 volt x 16 amp timer =
maximum 3840 watt heatersafer max would be
2500-3000 watt
Buy: Ei400 timer CR2 replacement battery Resources Compare all countdown timers Ei400 manual |
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Dehumidistat switches Control and/or measure humidity Use switch to automatically turn on vent fan Use switch to turn on wall heater 8 amps x 120 volt = 1600 watt 15 amps x 240 volt = 1800 amp These amp ratings are a bit light for controlling 120 volt 8.3 amp and 17 amp 240 volt wall heater without using relay. email if you want wiring diagram: geno03245w@gmail.com Dehumidistat must be hardwired in approved electrical box. Buy: Dehumidistat Honeywell 24-120-240 volt 7.5 amp Air King 120 volt 8 amp Broan Nutone 24 v 120 v 8 amp Resources Honeywell 120-240 volt manual Broan Nutone manual Air King DH55 instruction manual |
| Home automation Zwave or wifi module might work with 120 volt heater .... Module would be susceptible to heat if installed inside the heater. A relay would be needed to safely handle the amp ratings email if you want wiring diagram: geno03245w@gmail.com |
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Basic household wiring |
Multimeter Test for breaks in wire/ Test for voltage Most appliance require 80% rated voltage to function correctly Buy Analog multimeter Multimeters at Amazon Klein multimeter Electric testers at Amazon Clampmeter for testing amp flow on line Resource: How to test and replace element How to test thermocouple Element tests for 120 volts How to test wire |
Safety
when testing wires:
Never touch wet or previously flooded appliance. Never stand on wet surface when working on electric. Never stand on bare soil, put down dry boards. Tape tester leads to wood sticks to keep hands away from power. Use non-contact voltage tester before touching wires. Never touch or lean into any made of metal. Remove metal objects from pockets. Do not use oxygen or fuel accelerants in same room as electrical repairs Resource: Basic house wiring |
 Non-contact voltage tester Test for power without touching connectors NEVER assume power is OFF Buy: Non-contact voltage tester Amazon Electric testers at Amazon Resource: How to test electric power is off |
 120 volt 15 amp devices
including GFCI, timers, switches, plugs, wifi controls etc can be
installed on 15 or 20
amp
breaker.120 volt GFCI, outlet, receptacle that is rated 20 amp can be installed on 20 amp breaker only, but NOT on 15 amp breaker. Buy 15 amp GFCI 20 amp GFCI |
Buy Basic electric book Home plumbing/ electrical codes  Or learn about basic household electricity... use and search my site/ Resource Safe electric wiring Basic house wiring |
 Use outlet tester to check for correct wiring on any 120 volt straight-blade outlet. Buy: Klein testers Outlet tester Circuit breaker finder Electric usage monitor |
Twist-on wire connector assortmentsDo not reuse old connectorsTwist wire connector very tight. Pull wires to ensure they will not come loose. Cover all bare copper. Buy: Connector assortment at Amazon Connector assortment at Amazon Resource How to select and install twist-on wire connectors |
Weatherproof wire connectorConnector cavity is full of siliconeBuilt-in cover keeps silicone in place Protect from water, dust etc Buy from my affiliate links Weatherproof size 14 to 6 Amazon Weatherproof size 22 to 8 Amazon Resource How to select and install connectors |
Connect wire to screw terminal Use only 600 volt solid copper wire. Do not use stranded wire or extension cord. Do not use solder anywhere on residential 120-240 volt wiring. Attach electric installation to structure. Tighten screws very tight against wire.  Buy: NEC books Dewalt plumbing/ electrical codes Basic electric book National electric code guide/ illustrated Resources: How to twist wire How to select and install twist-on wire connectors |
 Weatherproof
lever switch on outdoor lightsSafely operate outdoor toggle switch Replaces outdoor cover Install over top of ordinary switch Works with single-pole, double-pole, 3PST, 3-way, 4-way switches etc Use weatherproof box for outdoor Can be used indoor or outdoor Buy: Cantex lever switch Leviton lever switch Outdoor lever switches at Amazon Resource Cantex-toggle-switch-covers.pdf Cantex-PVC-junction-boxes.pdf |
Buy: |
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 |
Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable. Code -Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15 Buy End cutting nippers at Amazon |
 When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistances on wire and creates weak point. Buy tools: Wire strippers at Amazon Linesman pliers Pro linesman plier Needle nose pliers End cutting nippers at Amazon |
 Weather resistant plastic box for outdoor extension cord connections, Christmas lights, outdoor power strip etc . Not for connecting wires with wire nutsŪ, or in-wall wiring, but can be used indoors to organize extension cords, power strips etc. Weather resistant is not weatherproof or watertight. Use enclosures rated IP65 and IP67 for waterproof. Extension cords cannot be used for permanent wiring. Buy: Large-medium-small electric cord box Socketbox Raintight enclosures Water-tight cord lock Resource: Enclosures and boxes |
 How to wire contactors/ relays |
 How to wire inline fuseholder |
 How to wire delay timers How to wire twin timers |
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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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