3 way switches have 3 terminals. A common on and off switch only has 2.
Red is the alternate hot leg in a 2 way switch circuit
The strappers from each two way switch go to the four way switch. The strappers from one switch go to terminals 1 & 2, the other two go to terminals 3 & 4.
You don't. You use a pair of two-way switches ('three-way switches' in US/Canada).
No. A double pole switch would be a switch that switches 2 different loads simultaneously. 3-way switches (and 4-way switches if more than 2 are used) are what are used for controlling a light from multiple locations. While a typical single pole switch simply opens or closes a single contact, a 3-way switch provides a path from a contact point to, let's say, point A or point B. Points A and B from the first 3-way switch are connected to points A and B of the second 3-way switch and then the common contact point of the second switch is connected to your light. When more than 2 switches are desired, you can use any number of 4-way switches between the 3-way switches, but the 3-way switches MUST be on the ends of the circuit.
Light switch. Almost any on/off switch you use is base 2.
3 way switches have 3 terminals. A common on and off switch only has 2.
You need a three way switch to control lights from two locations. The name is misleading. Three way switch refers to the connection points on the switch. You can use a three way switch as a single switch as long as you place hot wire on the brass screw and the use any of the other screws for the return hot.
3 gang means 3 individual switches in the same single unit. 2 way means each switch can be on or off.
Red is the alternate hot leg in a 2 way switch circuit
By 2 way switch I assume you mean a single pole switch. If so yes this can be done.
The strappers from each two way switch go to the four way switch. The strappers from one switch go to terminals 1 & 2, the other two go to terminals 3 & 4.
By using DPST(Double Pole Single Through) switch.
You don't. You use a pair of two-way switches ('three-way switches' in US/Canada).
A single pole switch controls a light or outlet at one location. A 3 way switch controls a light or outlet from 2 locations.
No. A double pole switch would be a switch that switches 2 different loads simultaneously. 3-way switches (and 4-way switches if more than 2 are used) are what are used for controlling a light from multiple locations. While a typical single pole switch simply opens or closes a single contact, a 3-way switch provides a path from a contact point to, let's say, point A or point B. Points A and B from the first 3-way switch are connected to points A and B of the second 3-way switch and then the common contact point of the second switch is connected to your light. When more than 2 switches are desired, you can use any number of 4-way switches between the 3-way switches, but the 3-way switches MUST be on the ends of the circuit.
Send power to the 1st switch and then send the power from that switch when it is in the on position to the second switch. Then send power to the light from the second switch. That way both switches will have to be in the on position for the light to be on.