Main Disconnect Switch Height

The last thing you would want to do is look for a ladder in an electrical emergency when you need to switch off your main switch.

Main disconnect switch height.

That s why your main switch shall not be more than 2 meters above a ground floor or platform. Height of main disconnect the power company may have stricter rules regarding the acceptable mounting heights. The top of the disconnect switch is only 72 inches 6 feet above the floor. If the six breaker rule is allowed locally the six switches must be together in.

All answers based on unamended national electrical codes. The minimum working space height required for this disconnect switch is 6 1 2 feet see figure 1. No main disconnect switch in electrical panels with six or more breakers. If you were to switch your main switch off then it will disconnect all the electricity to your house or business.

Its height is 84 inches 7 feet and the disconnect switch height is 72 inches 6 feet. Main disconnect switches circuit breakers and molded case switches equipped with door mounted rotary handles and installed in industrial control panels for industrial machinery applications essentially require the use of an additional internally mounted supplementary handle in. Another source of confusion has been in applying the requirements of 422 32 which pertained only to motor driven appliances and differed from those in 422 31. So it makes sense that the height of your main switch is accessible without having to find a step ladder or chair to reach it.

More than two main disconnect switches in the main panel are required to turn off the panel presuming this is a main residential panel hosting more than 6 circuits total see next bullet. The 2011 nec clarifies that the branch circuit overcurrent device can serve as the disconnect for appliances if they are not over 300va or 1 8 hp 422 31 a. Since the switchboard height is greater than 6 1 2 feet the minimum working space height required is the switchboard height 7 feet.