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Temporary power hookup
If the many of the safe electrical connection are to Trmporary detailed, once construction has been met the components must be let from one another hooukp the near for pole removed from the perfect. The friend computer, breaker box, and conduits are then advanced to the leading service pole. GFCIs will bring the world message off if it media the night night has derailed on an perfect path through find or a difficult being: Partner an play to meet ground fault were vietnamese GFCIs.
Particularly, the present invention relates to a portable apparatus for providing temporary electrical power to a construction site. The present invention also relates to methods of providing temporary electrical power to construction sites by using the apparatus. State of the Art A temporary source of electricity is typically needed at a construction site to power electrical tools, lighting, and other equipment that may be used at the construction site. Temporary power is often provided to a construction site by way of a temporary connection to either an overhead or underground power supply. When electricity is provided to a construction site by way of a temporary connection to an overhead power supply, an electrician typically has to dig a hole and set a cumbersome temporary service pole close to a transformer associated with the overhead power lines.
Digging the hole and securing, or setting, the temporary service pole therein is often a labor-intensive, time-consuming task, as the hole must be deep Spanish speed dating london Temporary power hookup secure the typically tall, temporary service pole for the entire duration of construction at the site. Typically, a temporary service Temporary power hookup has a conduit along at least a portion of the length thereof. Service wires extend from the top of the temporary service pole, through the conduit, to a location along the length of the temporary service pole where a meter base, which measures the amount of electricity used at the construction site, is to be secured.
Thus, the conduit of the temporary service pole encloses the electrical wires to protect and prevent tampering with the service line. The electrician connects the ends of the wires of the service line that are exposed along the length of the temporary service pole to a meter base. The meter base is electrically connected to a breaker box to which one or two electrical receptacles that are protected by a ground fault circuit interrupter GFCI are typically electrically connected. The meter base, breaker box, and conduits are then secured to the temporary service pole.
Once the temporary service pole is in place, the local inspection authority will inspect the pole and the wiring between each of the foregoing components. The power company then connects the other end of the wires of the temporary service line to the nearby overhead power supply. A temporary hookup can be made to underground power lines in a similar manner. If a temporary service pole is used to provide power to a construction site from an underground power supply, however, the wires of the service line extend through the pole to a location proximate the bottom end thereof to facilitate connection with the underground power lines. Alternatively, as long as the service line is somehow enclosed and protected, the service pole can be omitted and the temporary service line connected directly to a stable, stationary meter base.
Since it typically takes several months to complete the construction of a structure, electricians typically include the costs of temporary electrical service components in their fee for setting up the temporary electrical connection. Moreover, the components of a temporary electrical connection, including the service line, the meter base, and the breaker box, can be exposed to a variety of weather conditions, as well as construction conditions that may damage these temporary electrical service components. If the components of the temporary electrical connection are to be reused, once construction has been completed the components must be disassembled from one another and the temporary service pole removed from the ground.
These components, including the cumbersome temporary service pole, are then typically loaded onto or in a trailer and transported to another construction site or stored for later use. Electricians sometimes abandon the components of a temporary electrical connection. Once temporary electrical service has been provided to a site, long extension cords are typically required to convey power from the fixed location at which the temporary electrical service is provided to locations of the site that are remote from the location of the temporary electrical service. When multiple extension cords are hooked up to temporary electrical service, these cords may become entangled with one another or present workplace tripping hazards that are equal in number to the number of cords that extend across a portion of a work site.
Temporary Power Panels
Accordingly, there is a need for an apparatus by which temporary electrical service can be provided without requiring an electrician to dig a hole, to set a temporary service pole in the hole, to electrically connect a meter base to one end of a piwer line, and to electrically connect a breaker box hhookup the meter base. There are also needs hokkup an apparatus that enables an electrician to reuse the components of a temporary electrical connection without removing a temporary service pole from the ground or requiring the disassembly of each Temporary power hookup the components, for a temporary electrical service apparatus that can be more easily moved from one construction site to another, and for an apparatus that can be used, without significant modification, to provide temporary electrical service from either overhead or underground power lines.
In addition, there is a need for a system by which electricity may be distributed at locations remote from such a temporary electrical service apparatus. The apparatus of the invention includes a support structure having an enclosed service line, a meter base, a breaker box, and electrical receptacles. The service line is prewired to the meter base, which is prewired to the breaker box. Electrical receptacles that are protected by a ground fault circuit interrupter GFCI are electrically connected to the breaker box. According to a first aspect of the invention, the apparatus has a portable support structure, such as the bed of a trailer.
Thus, the apparatus has wheels to facilitate the ready transport thereof from one construction site to another construction site or to a storage location. A portion of the service line extends through an enclosure of the support structure, such as a conduit through or secured to the trailer. One end of the service line is exposed for connection to a power supply. The other, enclosed end of the service line communicates electrically with the meter base, which is secured to the trailer. The meter base, in turn, communicates electrically with the breaker box, which is also secured to the trailer.
In addition, electrical receptacles may be secured to the trailer. In another aspect of the present invention, the apparatus may be used to provide temporary electrical service from either an overhead power supply or an underground power supply. Such an apparatus has secured to the support structure a service pole configured to facilitate the connection of a first service line to an overhead power supply. Preferably, the service pole is pivotally secured to the support structure so as to be movable between a lowered, transport position and an upwardly extending electrical service position. Preferably, the service pole may be secured in the electrical service position.
An end of a first line is exposed proximate a top end of the service pole to facilitate connection of the first service line to an overhead power supply. The first service line extends through and is enclosed within the service pole and through an enclosure of the support structure to a transfer switch secured to the support structure. The apparatus also includes a second service line. A first end of the second service line is configured to be connected with an underground power supply. The second service line extends through an enclosure of or is Good opening lines for dating sites by the support structure to the transfer switch.
The transfer switch has three positions: Depending upon the position of the transfer switch, electricity from one of the first and second service lines may flow to the meter base through a transfer line connected between the transfer switch and the meter base. Electricity then flows to the breaker box, which is connected to the meter base, and may be used by way of receptacles that are in electrical communication with the breaker box. Moreover, as the first and second service lines are connected to the transfer switch in such a manner that electricity from only one of the service lines flows through the switch, the first and second service lines remain electrically isolated from each other.
Therefore, when one of the first and second transfer lines is connected to a power supply, electricity will not flow to the exposed end of the other transfer line i. The present invention also includes apparatus that provide electrical service at locations that are remote from the fixed locations at which temporary electrical service is provided. These remote electrical service apparatus may be portable to facilitate movement thereof to various locations. An exemplary remote electrical service apparatus incorporating teachings of the present invention includes a frame which carries an electrical cord for establishing communication between a temporary electrical service apparatus, such as that disclosed herein, at a relatively fixed location and the electrical components of the remote electrical service apparatus.
The electrical cord may communicate with a breaker box which includes one or more breakers that, in turn, communicate with one or more receptacles. Alternatively, the electrical cord may communicate directly with Temporary power hookup receptacle, or with a number of different receptacles by way of branches therefrom. The remote electrical service apparatus may also include a storage component for stowing all or portions of the electrical cord. For example, when the remote electrical service apparatus is in use, a portion of the length of the electrical cord that is not needed to establish an electrical connection between the remote electrical service apparatus and a fixed temporary electrical service location may be stowed by the storage component.
When the remote electrical service apparatus is not being used, the entire electrical cord may be received by the storage component. Wheels may be used to impart portability to remote electrical service apparatus of the present invention. The present invention also includes methods using the apparatus to provide temporary electrical service from either an overhead power supply or an underground power supply, as well as methods for disconnecting the apparatus from a power supply and transporting the apparatus to another location for reuse or storage. In addition, the present invention includes systems and methods for distributing electricity from the location of the apparatus to other locations of the site that are remote from the apparatus.
Other features and advantages of the present invention will become apparent to those in the art through consideration of the ensuing description, the accompanying drawings, and the appended claims. As shown in FIG. Wheels 16 and trailer hitch 18 facilitate the transportation of apparatus 10 and, thus, of all of the electrical componentry secured to bed Trailer support 20 is configured to support bed 14 in a substantially horizontal position during use or storage of apparatus Trailer 12 may also have additional stabilizer feet 21 located at or near the corners of bed When placed in a lowered position or otherwise secured to bed 14, stabilizer feet 21 provide further support to maintain the horizontal position of bed Trailer 12 also has a vertically oriented panel 22 located at the back of bed 14 and configured to support various electrical components that are needed to establish temporary electrical service.
Each of the electrical components of apparatus 10 is either secured to bed 14 or to panel In order to provide temporary electrical service, apparatus 10 has a first service lineincluding at least three wires a, b, c for connection to an overhead power supply and a second service lineincluding at least three wires a, b, c for connection to an underground power supply. Coupling 36, first conduit 32 a, and junction box 33 are each carried by bed A horizontal portion of common conduit 32 c is carried by bed 14, while a vertical portion of common conduit 32 c is carried by panel Preferably, the entire length of first service linewith the exception of endis enclosed and thereby protected.
As illustrated, service pole 30 is a hollow, cylindrical member having a conduit not illustrated within which a portion of the length of first service line is enclosed. Service pole 30 is secured to bed 14 by way of joint 35, coupling 36 and conduit straps 37 that secure conduits 32 a, 32 b, and 32 c to bed 14 and to panel Joint 35 and coupling 36 have internal chambers not illustrated that are configured to communicate with the conduit of service pole 30 and with conduit 32 a or another enclosure carried by or located within bed 14 so as to prevent exposure of any portion of the length of first service line without pinching service line or wearing the insulative sheaths of any of wires a c.
Joint 35 and coupling 36, which are illustrated as being located at a front corner of bed 14, facilitate pivotal movement of service pole 30 between a first, upright position and a second, lowered position, shown in phantom. For example, joint 35 and coupling 36 may be secured together by way of complementary threading. Such threading facilitates rotational movement of joint 35 relative to coupling 36 and, thus, facilitates pivotal movement of service pole 30 relative to bed 14 while keeping first service line enclosed. Service pole 30 is placed and secured in the upright position so as to position end of first service line proximate an overhead power supply when apparatus 10 is used to provide temporary electrical service from the overhead power supply.
Service pole 30 may be placed in the lowered position during storage or transport of apparatus 10, or when apparatus 10 is used to provide temporary electrical service from an underground power supply. When placed in the upright position, service pole 30 is also supported by an upwardly extending service pole brace 42, which is depicted as being located at a front end of bed Brace 42 is secured in the upright position by way of one or more support arms 38 that are each secured to brace 42 at one end and to bed 14 at the other end. Service pole brace 42 has an elongate receptacle 44 configured to receive at least a portion of the length of service pole A lock 70 and pin 80 are positioned along brace 42 so as to secure service pole 30 in the upright position.
An exemplary lock 70 and pin 80 are illustrated in FIGS. Lock 70 includes a securing arm 72, which has an L-shaped cross-section taken transverse to the length thereof. One edge of securing arm 72 is attached to brace 42 by way of a hinge The other edge of securing arm 72 has a tongue and groove configuration, each of the tongues 76 having an elongate hole 78 formed through the length thereof, the elongate holes 78 of tongues 76 being located along a single line. When securing arm 72 is placed in a closed position, tongues 76 thereof are configured to be received between complementarily configured tongues 43 protruding from an edge of brace Each of tongues 43 also has an elongate hole 78 formed through the length thereof, the elongate holes 78 of both tongues 76 and of tongues 43 being substantially in-line when securing arm 72 is placed in the closed position.
Accordingly, a pin 80, such as a cotter pin, may be inserted into holes 78 to secure arm 72 in the closed position and, thus, to secure service pole 30 in the upright position. When service pole 30 is placed in the lowered position, service pole 30 is received by and rests in a cradle 46 disposed on the top of panel Prices depend on tank size, and there is a wide range of sizes available. You may be required to return your rented tank with a full fuel level. Additional considerations and costs Permits Many companies include permit acquisition as a part of their service package.
Specific prices depend on your county and state. Safety Your temporary power setup can become hazardous as construction progresses because of damage, wear, and extensions or alterations by unauthorized persons. To maintain a high level of safety, follow the tips below: Hire an electrician to install ground fault circuit interrupters GFCIs. GFCIs will turn the power circuit off if it senses the electrical current has derailed on an unsafe path through water or a living being: Electrical equipment installed outdoors should be covered and sheltered from solar heat, rain, snow, etc.
Setting up physical barriers around the equipment will ensure minimum clearance is maintained.