Conduit Requirements and examples.pdf
PDF 677 KB Posted
- Attached to
- White Marsh Park Comfort Station
- Solicitation number
- BPM054342
- Issued by
- Queen Anne's County, Maryland
About this file
This file contains conduit installation requirements and guidelines issued by Delmarva Power for customers whose underground electrical service is being engineered or installed through the Accelerated Electric Service process. The document outlines mandatory customer responsibilities for installing appropriate conduit and providing photographic documentation to the Field Engineer or Service Associate prior to construction release. Customers must submit a minimum of four digital photographs showing conduit installation at bend locations with ruler references for depth verification, the conduit riser and meter socket, and the conduit end adjacent to the pole or equipment serving the project. These photographs must be emailed immediately upon conduit completion, and email confirmation is required before job release to construction. The installation specifications require Schedule 40 PVC grey electrical conduit or black HDPE SDR-13.5 with a minimum 4,000-pound pull-strength mule tape pull cord blown in after installation completion. All secondary and service conduits must be continuous to the meter socket, with the meter socket riser constructed from grey Schedule 40 PVC, plumb, and secured with a properly sized bushing and lock nut.
All bends, including 90, 45, and 30-degree configurations, must utilize long-sweep radius designs of 36 inches with no exceptions, and only Schedule 40 PVC grey electrical conduit is acceptable. Delmarva Power permits a maximum of three 90-degree long-radius sweeps per conduit run or 270 degrees total per run, consisting of one sweep at conduit start, one at conduit end, and one additional sweep along the path, with pull boxes required for additional sweeps. For conduits extended to new Delmarva Power equipment, ends must be turned up and capped at three feet above grade; for conduits extended to existing equipment or poles, ends must be capped below grade at a maximum of 36 inches from energized equipment and marked with stakes labeled in black sharpie, with an additional 10 feet of mule tape coiled inside the capped end.
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Text version
Delmarva Power is currently Engineering the installation of your underground service, or your job has been determined to be installed utilizing our Accelerated Electric Service process. In both cases, there are items that must be completed by you, the customer, or the customer’s representative. One of those items includes installing appropriate conduit and providing pictures to your Field Engineer or Service Associate. In addition to reading over, signing, and returning the service agreement, you MUST provide pictures of the conduit prior to backfilling.
WE MUST RECEIVE A MINIMUM OF 4 PICTURES AS SHOWN BELOW IN EXAMPLES PROVIDED
1. Prior to backfilling material into the conduit trench please provide a minimum of four digital photographs; one at each bend installation showing a ruler for reference of correct installation depth and displaying properly specified long-sweep bends, one showing the conduit riser to and including the meter socket, one showing the end of the conduit adjacent to the pole/equipment serving your project (see Attachment A for example photographs).
Immediately e-mail these pictures to your field engineer or service associate upon completion of the conduit installation. Email confirmation of the conduit completion is required before the job will be released to construction.
CONDUIT INSTALLATION GUIDELINES
• Conduits: Install Schedule 40 PVC Grey Electrical conduit or black HDPE (high-density polyethylene), SDR-13.5 with a MULE TAPE pull cord rated at a minimum of 4000lbs pull strength. The Mule Tape pull cord shall be blown in after completion of conduit installation so that the cord will be in proper usable condition during the installation of facilities by DPL. All secondary/service conduits must be continuous to the meter socket.
• The meter socket riser must be grey schedule 40 PVC. The meter socket riser should be plumb and secured to the meter socket by a properly sized bushing and lock nut.
• For conduits extended to new DPL equipment:
o The conduit ends shall be turned up and capped to 3 feet above grade with a long radius sweep 90
Degree bends. DPL will not be responsible to dig for ends of any conduits extended to new equipment that are not turned up and 3 ft above grade. Delmarva Power will provide a stub-up detail indicating the required spacing and grouping of all conduits based on the intended orientation of newly installed equipment.
• For conduits extended to existing DPL equipment and poles:
o Conduit ends shall be installed, capped and left below grade at a maximum distance of 36” from the energized equipment or pole. The ends of the conduit shall be marked with a stake (mark stake with “DPL CONDUIT X Inch” in black sharpie). An additional 10’ of mule tape shall be left coiled in the capped end.
Bends: ALL 90, 45- and 30-Degree Long Sweeps shall be 36 Inch Radius. No exceptions. All bends must be Schedule 40 PVC Grey Electrical conduit – White plumbing conduit WILL NOT BE ACCEPTED. DPL shall allow only (3) three 90 Degree Long Radius Sweeps per conduit run or a total of 270 degrees for the entire conduit run. Based upon this condition, each run shall include (1) one 90 Degree long radius sweep at conduit start, (1) one 90-degree long radius sweep at conduit end, and at most, (1) one 90- degree or (2) 45 -degree or (3) 30-degree long radius sweep(s) along the conduit path. If any additional conduit sweeps are necessary, DPL shall work with the customer in determining the location and arrangement for the installation of a DPL supplied and customer installed pull box.
Measurement showing
26” or more cover
Sweep up into meter pan showing mule tape or pull string Capped off end at DPL equipment
Inside of Meter Pan with mule tape/pull string Show any sweeps or bends as necessary
File details come from the government source that posted it. Updated .