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whats the difference between single and double pole thermostat

by Mr. Kayleigh Nitzsche V Published 3 years ago Updated 2 years ago

Single-pole thermostats (2-wires) cut off the power on only one side of the power wire. Therefore, the thermostat and the heaters remain powered at all times. Double-pole thermostats (4-wires) cut both sides of the power line.

Full Answer

How does a double pole thermostat work?

Just like a single pole thermostat, a double pole thermostat is wired directly to the main circuit breaker but will have four wires instead of two. This allows for the thermostat to operate on two separate circuits. Double pole thermostats have an “off” button and can cut off power completely to the heater,...

Can a single pole thermostat have two wires?

Most single pole thermostats have two wires and do not have a true off setting. This means that the line voltage breaks to only one side of the power line so there is continuous power transferred to the heater; even if it is not currently in use.

What is the difference between single pole and double pole sockets?

Whilst a single pole socket is generally cheaper it is always preferred that customers/electricians install double pole sockets for safer isolation of the plugged in appliances. What is the difference between a 2 pole and 3 pole switch? The difference is simply the amount of poles being switched. Are single pole sockets safe?

What are the disadvantages of a single pole thermostat?

Well, the most important one is that a single pole thermostat throws some safety concerns owing to the fact that the electric heater is always connected to the power line (even at the low setting). Electric heaters are usually required only during the cold season. In most homes, electric heaters are not used during summer.

What does it mean when a thermostat is double pole?

A double pole means you will have two switches on a single circuit. This makes it possible to break the circuit safely, which means that you can fully shut off (and de-power) the circuit. That’s why double pole thermostats can be turned completely off.

How many wires does a single pole thermostat have?

Single pole thermostats have two wires that are linked directly to the circuit breaker and do not have an official “OFF” setting. Meanwhile, double pole thermostats have four wires that connect to the circuit breaker. They can be shut off.

What is the best thermostat for older homes?

Single pole thermostats were the gold standard when it comes to older models. They were the first type of thermostat that was invented, so most older homes will have them. If you have a newer home, the go-to is usually going to be a double pole thermostat since these are generally more energy efficient.

What is a pole thermostat?

When it comes to thermostats, a “pole” refers to the number of separately running circuits that a switch runs off a single circuit. With a single pole, you have a single switch on a single circuit. This switch can only be turned down to a minimum, not shut off.

Can you have a single pole thermostat and a dual pole thermostat?

If you have a single pole thermostat and want to go to a dual pole setup, there’s some good news on the horizon. You absolutely can. However, there’s a catch. You will need to have all the setup required to make the switch. This means that you will have to have the wiring meant for a dual pole.

Do you need a thermostat for baseboards?

Most warm areas will have a double pole thermostat for baseboards. If you live in a place like San Francisco, then you won’t need to have baseboard heating year-round. In fact, it might even make things worse for your home climate. As a result, it’s often safe to assume you’ll need a dual pole thermostat unit in these areas.

Is it safe to turn off the heat?

If you are currently working on any part of your electrical wiring setup, assuming that your heater is turned off is never a smart idea. To prevent bodily harm and fires, it’s best to manually turn off power to your home’s heater. This ensures that there is no electrical current. After all, it is possible for thermostat signals to misfire.

What is the difference between a single pole and a double pole thermostat?

The difference is all about the off setting -- or a lack of one. Double pole stats have a true off setting. Single pole thermostats don't. That might not seem like too big of a deal to some folks, but there are some safety implications to consider.

How to know if you have a single pole thermostat?

Cadet Vice President of Engineering Craig Peterson says the easiest way to determine if you have a single or double pole thermostat is to turn off the power at the breaker that powers your heater and take the thermostat off the wall.

What does it mean when you have two wires coming out of a thermostat?

If there are four wires, you have a double pole. If you have more than four wires coming out of your thermostat, you most likely have a low voltage one, which would be used to control a central furnace, boiler, or something similar.

What does it mean when a thermostat is off?

What many people think is an off setting on the single pole thermostats, is actually a low setting. That means the heaters will turn on when the temperature dips below a certain temperature, which is usually around 45 degrees Fahrenheit. If a double pole stat is turned all the way counterclockwise, it is off and will not turn on, even in the case that a home dips below 45 degrees.

What is the Difference Between a Single Pole and Double Pole Thermostat?

You may be interested in replacing or upgrading your heater for the winter season or you might just need a new thermostat this season.

How many wires does a double pole thermostat have?

Just like a single pole thermostat, a double pole thermostat is wired directly to the main circuit breaker but will have four wires instead of two. This allows for the thermostat to operate on two separate circuits. Double pole thermostats have an “off” button and can cut off power completely to the heater, even if the temperature drops below ...

What is a Line Voltage Thermostat?

Line voltage is the standard, everyday 120V that is found in your outlets, junction boxes, and sockets. Items like table lamps, ceiling fans, and ceiling fixtures all run off a 120V line voltage circuit.

How to turn off a heater with a single pole thermostat?

If you go with a single pole thermostat to turn your heater off completely, you would need to disconnect the main power supply, or unplug your unit when applicable . In addition, the heater will turn on if there is a dip in the room’s temperature even if the thermostat is at its lowest setting.

How many wires does a thermostat have?

These wires are wired to the main service line of the circuit. Most single pole thermostats have two wires and do not have a true off setting. This means that the line voltage breaks to only one side of the power line so there is continuous power transferred to the heater; even if it is not currently in use. This can also be identified on the front ...

Is it better to turn off the thermostat or turn it on?

In the old days, leaving your thermostat on "low" was thought to be much cheaper in terms of reducing energy costs rather than turning it off and on when needed. However, it is much more energy efficient to turn your heater off whenever it is not in use to cut back on energy costs.

Can a double pole thermostat be operated by the same switch?

Since a double pole thermostat, also known as a 4-wire control, can operate on two separate circuits, this type of thermostat can operate by the same switch.

Why use a double pole switch?

Another reason to use a double pole switch is due to regulations that mean you need to have local means of isolation for certain products. So the double pole isolator isolates one particular socket that is behind a fridge for example.

What Are Single Pole Switches?

Single pole switches are common, simple light switches. They control one circuit and offer a regular off and on function. Most switches in a typical home tend to be single pole. Double pole switches are more common in industrial settings or factories, however they can be used as a safety shut-off for a residential appliance.

Why do double pole sockets switch?

A double pole socket switches both the live and neutral to ensure safe isolation of the plugged in appliance.

Can a single pole switch control two circuits?

Single pole switches can control just one circuit and a double pole switch can control two circuits. So a double pole switch is almost like having two single pole switches, controlled by the same switch.

Is it safe to use a single pole socket?

Single pole sockets are perfectly legal and are safe for many appliances, but it is safer to use double pole sockets. Therefore is always better to use double pole sockets in all situations.

Do switch modules need to be grounded?

A switch module does not require grounding but the yoke and faceplate must always be grounded if the faceplate is made from metal. Most plastic switch plates do not need grounding due to it being a class 2 product.

Is it cheaper to install a single pole socket or a double pole socket?

Whilst a single pole socket is generally cheaper it is always preferred that customers/electricians install double pole sockets for safer isolation of the plugged in appliances.

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