Which section of Article 225 addresses the rating of a disconnecting means for branch circuits and feeders?

225.31 Disconnecting Means. Means shall be provided for disconnecting all ungrounded conductors that supply or pass through the building or structure. 225.32 Location.

What shall not be used as a support for overhead conductors?

“Vegetation such as trees shall not be used for support of overhead service conductors.”

What is feeder disconnect?

A Type SER cable between a 200-amp residential service disconnect and a subpanel is a feeder. The conductors between an 800-amp circuit breaker and a fused branch circuit disconnect supplying a single motor are also feeder conductors. So are the conductors between a standby generator and an emergency transfer switch.

Can trees support overhead conductor spans?

Vegetation such as trees shall not be used for support of overhead conductor spans.

Do I need a disconnect on my shed?

Yes, you can run a single branch circuit to a structure You’ll need a disconnecting means at the shed to satisfy 225.31; however, this can be a simple light switch in a weatherproof box or just inside the shed, nothing fancier is needed for a single branch circuit.

What is the minimum rating of a feeder disconnect that is serving a detached building having three branch circuits?

For a one-family dwelling, the feeder disconnecting means must have a rating of at least 100A, 3-wire [225.39(C)]. For all other installations, the feeder or branch circuit disconnecting means must have a rating of at least 60A [225.39(D)].

How far does a mast have to be above the roof?

3-feet
The service mast should not be more than 3-feet vertically above the roof line; most utilities will require bracing or guy wires for additional support of any mast that is taller than 3-feet.

How close can power lines be to roof?

The National Electric Code (NEC 230.24(A)) requires that overhead service wires (conductors) be a minimum of 8 feet above a roof, including for a minimum 3 feet in all directions from the edge of the roof, but then provides four allowable exceptions.

Does a subpanel need a disconnect?

It’s ok for a subpanel to have a main disconnect, but it’s not required. In this case, the disconnect was located outside of the condo unit. On condo buildings, it’s common for all of the main panels to be located in a single room, usually in the basement of the building.

Can you run branch circuits with feeders?

“You can’t use a panel as a raceway!” “You can’t run branch circuits and feeders together!”

Can you mount electrical to a tree?

You can install wiring on live tree as you’ve described. You cannot span from one live tree to another overhead. IMO your raceway would be subject to physical damage where it emerges from the ground. Therefore you would need to use a raceway that is permitted to be subject to physical damage.

What article of the NEC covers attic lighting?

210.70(C) All Occupancies. For attics and underfloor spaces, utility rooms, and basements, at least one lighting outlet containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requiring servicing.