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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 |
 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 |
 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 |
 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 |
 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 |
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 |
 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 Buy single-pole: Choose from 15 to 60 amp Eaton CL series Siemens 15-60 amp Single-pole tandem breaker 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. |
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Match wire and breaker |
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: Honeywell 24-120-240 volt 7.5 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 |
 Basic household wiring |
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See inside main breaker box Basic household wiring Troubleshoot household wiring |
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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 |
