wire classification

[Toros]

Hi.
Would somebody describe the class 1 through 3.
The differences of......
Thank you

 

[Gregg Harris]

Hi.
Would somebody describe the class 1 through 3.
The differences of......
Thank you

Class 1 circuits. The NEC divides Class 1 circuits into two types: power-limited and remote-control and signaling circuits. Power-limited Class 1 circuits are limited to 30V and 1000VA. Class 1 remote-control and signaling circuits are limited to 600V, but there are limitations on the power output of the source.

The NEC defines a Class 2 circuit as that portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit is considered safe from a fire initiation standpoint and provides acceptable protection from electrical shock.

The Code defines a Class 3 circuit as that portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Since the Class 3 circuits has higher levels of current than for Class 2 circuits, it specifies additional safeguards to provide protection from an electric shock you might encounter on the job site.

 

[Gregg Harris]

Hi.
Would somebody describe the class 1 through 3.
The differences of......
Thank you

Class 1 circuits. The NEC divides Class 1 circuits into two types: power-limited and remote-control and signaling circuits. Power-limited Class 1 circuits are limited to 30V and 1000VA. Class 1 remote-control and signaling circuits are limited to 600V, but there are limitations on the power output of the source.

The NEC defines a Class 2 circuit as that portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit is considered safe from a fire initiation standpoint and provides acceptable protection from electrical shock.

The Code defines a Class 3 circuit as that portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Since the Class 3 circuits has higher levels of current than for Class 2 circuits, it specifies additional safeguards to provide protection from an electric shock you might encounter on the job site.



Take a look at Article 725

 

[Toros]

wiring classification

wiring classification

Class 1 circuits. The NEC divides Class 1 circuits into two types: power-limited and remote-control and signaling circuits. Power-limited Class 1 circuits are limited to 30V and 1000VA. Class 1 remote-control and signaling circuits are limited to 600V, but there are limitations on the power output of the source.

The NEC defines a Class 2 circuit as that portion of the wiring system between the load side of a Class 2 power source and the connected equipment. Due to its power limitations, a Class 2 circuit is considered safe from a fire initiation standpoint and provides acceptable protection from electrical shock.

The Code defines a Class 3 circuit as that portion of the wiring system between the load side of a Class 3 power source and the connected equipment. Since the Class 3 circuits has higher levels of current than for Class 2 circuits, it specifies additional safeguards to provide protection from an electric shock you might encounter on the job site.

So, all ltg and power load feeds (lights, receptacle , motores...) are classified as "class-2"??????

 

[don_resqcapt19]

So, all ltg and power load feeds (lights, receptacle , motores...) are classified as "class-2"??????

No...those are all power circuits and do not have a "class". Class is used for Article 725 applications.