Replacing double pole 220 v with honewell ct410a two wire120/140v wiring diagram not clear

It requires a 2 pole ganged breaker to meet code and guarantee the breaker is on two legs of the single split phase service. That in itself doesn't explain the 120 volts at the heater element.

Replace the two single breakers with the appropriate 2 pole ganged breaker. Before connecting the feed to the heater, turn on the ganged breaker and measure voltage across the breaker. If not 240VAC then there is a problem at the breaker panel.

If there's 240 at the breaker then you've somehow wired the thermostat incorrectly but can't imagine what you did.

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Model # CT410B Internet #100574426 Store SKU #129002
Honeywell Manual Electric Baseboard Thermostat (123)
Questions & Answers (32)

• Manual 4 Wire Premium Baseboard/Line Volt Thermostat
• Compatible with 120, 240 and 277 vac baseboard heat systems
• Simple dial-type mechanical control

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Store Details & Services Accessories (1) Product Overview
The easy-to-install Honeywell Manual Electric Baseboard Thermostat works on 4-wire (double pole) electric heat applications (baseboard or line volt) and allows for simple, worry-free operation. It has a simple dial-type mechanical control and is UL and CSA listed for safety.

• Mechanical operation, non-programmable thermostat
• 120 - 240-Volt; 4 wire
• Positive off
• Easy to install
• How to install and replace your thermostat
• How to choose the right thermostat for your home
• Click here for more information on Electronic Recycling Programs

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• Use and Care Manual

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Compare Similar Non-Programmable Thermostats
Price $21.99/each $24.97/each $44.28/each null¢ /null Name Double Pole 4-Wire Line Voltage Mechanical Thermostat Digital Non-Programmable Thermostat Single-Pole 10.4 Amp 120/240-Volt Digital Electronic Non-Programmable Wall Thermostat in White Manual Electric Baseboard Thermostat Brand Lux Honeywell Cadet Honeywell Ratings View Product View Product View Product View Product Specifications
Dimensions
Product Depth (in.)
1.5
Product Height (in.)
4.5
Product Width (in.)
2.75

Details
Color Family
Whites
Color Family
White
Operation Type
Mechanical
Returnable
90-Day
Shape
Rectangle
Thermostat Product Type
Non-Programmable Thermostat
Thermostat Shape
Rectangular
Thermostat Type
Heat Only
Voltage (v)
110/240v
Voltage (volts)
110/240
Warranty / Certifications
Certifications and Listings
1-UL Listed,CSA Listed
Manufacturer Warranty
1 year limited warranty
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You didn't say what type compressor you have and didn't say what voltage.
A 220 volt compressor should use a double pole switch .
A 120 volt compressor only needs a single pole switch'
how to wire pressure switch for compressor YouTube

In a traditional North American residential electrical panel (120/240 volt, single phase), installing a single width or single pole circuit breaker, you would expect to read 120 volts from the breaker terminal screw to either ground or neutral. A double width or double pole breaker would provide 120 volts from either of the breaker terminal screws to ground or neutral AND it will provide 240 volts BETWEEN the TWO breaker terminals.

A single-width circuit breaker case that contains two handles is NOT a two pole circuit breaker (these are called "tandem" or "1/2 size" breakers). This is because a single width breaker engages only one "line" in the panel. A double width breaker will engage 2 "lines" as a triple width breaker would engage 3 "lines" of a 3 phase panel. A single wide breaker can not physically engage more than 1 "line" so it will never be able to pass 240 volts.

You must install a double width / double pole breaker to safely supply a 240 volt circuit / device.

Wire nut one leg (the 2 wires of the first pole), & use the thermostat to complete the circuit (the 2 wires of the second pole).

Remove the back of the pump housing ... inside you will find the 110 volt connection place.

If your pump is on a dedicated line (as it should be) run it on 220 VAC ... To convert your line from 110 to 220 all you need is a double pole breaker of the proper amperage ... take the white wire presently on the ground bus bar and put it on the other side of the new double pole breaker. Then you will have 220 ... and you will save a few bucks on electricity.

should be double pole single throw,yes 220

Thermostats are typically low voltage only no more than 24volts that is supplied from the transformer in your heating unit. you need to look at your low voltage wiring that is in the furnace and write down the terminals that are hooked up. Usually (this is a very typical set up) red wire goes to R which supplies 24 volts. green goes to G powers fan motor, white to W terminal and blue or yellow goes to Y terminal this terminal will usually have another wire in its terminal with it to control an outdoor ac unit likely another red or white wire, and lastly the C terminal has a white wire. That is for a basic heating and cooling system just match how they are hooked up at the main unit to the terminals on your thermostat. the thermostat is just a switch breaking and connecting terminals that allow voltage to carry through it. Shut down your unit while working on it as not to blow the transformer otherwise you are gonna need to replace it to if it isnt fused, that is probably my most common repair from people who have tried to change their own thermostat. Hope this helps

You can't really do that. The two 110 outlets probably come for the same 'leg' of the 240. If you check them with a meter, there will be '0' volts between the two hot wires. So, they have the same 'potential'. You need a regular 240 volt circuit from a double pole breaker that is rated for the wire size that it's feeding. 20 amp-#12 ; 30 amp- #10 etc.

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