A service mast is the metal pole that rises through your roof or affixes to the exterior of your home. It connects directly to your exterior meter box. Service masts protect large cables called “service entrance conductors” that transfer power from the exterior supply to your home’s power meter.
How far does a mast have to be above the roof?
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.
What is a service entrance?
The service entrance, as the name implies, is where the wires connected to the load side of the meter enter the house or building. The service entrance in a residence is commonly thought of as a breaker or fuse box.
What can be attached to a service mast?
Only power service drop or overhead service conductors shall be permitted to be attached to a service mast. Service masts used for the support of service-drop or overhead service conductors shall be installed in accordance with 230.28(A) and (B).
What is a mast House?
Definition of mast house
: a small deckhouse built around a mast to serve as a support for derricks or sometimes as a winch platform and used for housing electric control equipment where electric winches are fitted.
Can I use IMC for service mast?
I then checked with Westar Energy to see if they had any service standards which would prohibit the use of IMC as service mast. They informed us they do not. Therefore one may use either IMC or rigid metallic conduit (RMC) for these applications.
Can you touch a service drop?
Never attempt to move or handle a service drop.
In the event of a downed power line resulting from high winds, falling trees, etc., call DTE to have the line de-energized and safely restrung.
What is the minimum height of a service drop attachment to a building?
In general, a service drop must be at least 12 feet above the ground (grade) as well as sidewalks and residential driveways. Minimum height above areas accessible only to pedestrians, such as porches or decks, is 10 feet.
What is the purpose of service entrance?
Service entrance drops are used to supply power to your home. They can be fed overhead or underground from the utility company’s power pole. In either case, a hot primary feed and a neutral feed are run from the utility company’s line to their transformer.
What are the two types of service entrance?
According to 338.2, there are two types of service-entrance cables: “Type SE or service entrance cable having a flame-retardant, moisture-resistant covering or Type USE which is service entrance cable, identified for underground use, having a moisture-resistant covering, but not required to have a flame-retardant
What are the components of a service entrance?
Service Entrance. A modern residential overhead service entrance comprises three cables — two hot and one neutral — that run from the utility lines to a point of attachment at the weather head, and then down an entrance cable or conduit to the meter socket.
What are the 3 wires from pole to house?
The service drop leads from the utility pole lines to a home. It is made up of three conductor wires. Two of them are insulated wires that carry electricity from the transformer; the third is a bare neutral wire that connects to the grounding wire. These lines have a voltage of 120 to 240 volts.
What size connector would use 100 amp service cable in 100 amp panel box?
When it comes to the lines connecting master and secondary panels, where the line will carry as much as a full 100 amps, use a 2-gauge non-metallic sheathed electrical cable.
What is point of attachment electrical?
What is a Point of Attachment? The point of attachment is the first point of electricity supply, where an overhead service cable connects to the property. This connection is usually the midpoint that runs from the street’s network pole to a roof apex, private pole, or the like. Simply put, it’s a midpoint junction box.
What is forecastle deck?
Definition of forecastle deck
: a partial deck above the main deck at the bow of a ship over a forecastle.
