Interior Main Disconnect Location

[Mike Lamb]

Could someone please direct me to the reference as to how close the main disconnect should be from where the SEC enters the interior of the house?

[rkenney]

230 somewhere. try 230.91

[Marc]

230.70(A)(1) (08' NEC)

It doesn't prescribe a particular distance. It depends on the mood and character of the particular AHJ on the day the question is put to him.

Marc

[Mike Lamb]

230.70(A)(1) (08' NEC)

It doesn't prescribe a particular distance. It depends on the mood and character of the particular AHJ on the day the question is put to him.

Marc

That's it. Thanks. I could not remember if there was some required distance.

...either outside of a building or structure or inside nearest the

point of entrance of the service conductors....

[Shawshill]

It depends on if it is a feeder or service, different articles pretty much same info.

FEEDER

225.31 Disconnecting Means

225.32 Location

The disconnecting means shall be installed either inside or

outside of the building or structure served or where the conductors

pass through the building or structure. The disconnecting

means shall be at a readily accessible location

nearest the point of entrance of the conductors. For the purposes

of this section, the requirements in 230.6 shall be utilized

SERVICE

230.70 General

Means shall be provided to disconnect all conductors in a

building or other structure from the service-entrance conductors.

(A) Location. The service disconnecting means shall

be installed in accordance with 230.70(A)(1), (A)(2), and

(A)(3).

(1) Readily Accessible Location. The service disconnecting

means shall be installed at a readily accessible location

either outside of a building or structure or inside nearest the

point of entrance of the service conductors.

(2) Bathrooms. Service disconnecting means shall not be

installed in bathrooms.

(3) Remote Control. Where a remote control device(s) is

used to actuate the service disconnecting means, the service

disconnecting means shall be located in accordance with

230.70(A)(1).

[Rob Amaral]

yeah.. but an inspector should know 'why' this is the recommendation or rule.... If you know 'why', people salute... including electricians and code officials...

[Marc]

yeah.. but an inspector should know 'why' this is the recommendation or rule.... If you know 'why', people salute... including electricians and code officials...

The why is obvious...The utility fuse that protects these conductors is big enough to fry them and put the house on fire. By keeping them short, the risk of something going wrong is minimized.

Marc

[Jim Katen]

yeah.. but an inspector should know 'why' this is the recommendation or rule.... If you know 'why', people salute... including electricians and code officials...

The why is obvious...The utility fuse that protects these conductors is big enough to fry them and put the house on fire. By keeping them short, the risk of something going wrong is minimized.

Marc

Just to be clear, the utility fuse *does not* protect the conductors.