Revise Commercial Power Distribution Drawings

@maksimi3

Hello, I can revise your electrical drawing to comply with the Prince George’s County, Maryland review comments and NEC 2020 requirements. I will update the drawing to clearly show the grouping of service disconnects in accordance with NEC 2020 Section 230.72, ensuring the arrangement is properly illustrated for the county reviewer. I will also prepare a complete grounding detail with conductor sizing per NEC 2020 Section 250, showing the grounding electrode system, grounding electrode conductors, and bonding requirements. In addition, I will separate the panel schedules and load calculations, creating Schedule C for Panel 6 and updating the drawing to reflect the 60A/2-pole breaker with #6 conductors feeding the common panel, while keeping Panel B unchanged and adding the additional sump pump circuit (15A/1-pole with #14 wire). The revised drawing will clearly differentiate the main panel, sub-panel B, and the common panel connections, ensuring the documentation is organized and ready for resubmission to the county. I hope we can work together and I look forward to your response. Kind regards.

@engrhasan01

Hi sir, you are looking for an engineer to revise your electrical drawing according to the requirements of PG County, MD and NEC 2020, and I can assist with that. I am an electrical design engineer with 5+ years of experience in electrical drafting, panel schedules, load calculations, and NEC-compliant drawings. I can update your existing plan to clearly show the grouping of disconnects in accordance with NEC 2020 section 230.72, add a proper grounding detail with conductor sizes based on NEC section 250, and revise the panel documentation by differentiating the main panel and the panel feeding sub-panel B. I will also update Panel B to include the additional circuit for the two sump pumps, create a separate schedule for Panel 6 (Schedule C) reflecting the 60/2 breaker with #6 conductors feeding the common panel, and ensure the service conductor information and grounding layout are correctly represented in the drawing. The final deliverable will be a clean, corrected electrical drawing suitable for resubmission to the county reviewer.

@lorenzo048

Hello, no problem. I am an experienced electrical designer familiar with PG County, MD requirements and the 2020 NEC. I will revise your electrical drawing to fully address all reviewer comments. The updated drawing will include: 1. **Disconnect Grouping:** I will clearly show the grouping of the 60A disconnects for each unit to comply with NEC 2020, Section 230.72. 2. **Grounding Detail:** I will add a detailed grounding diagram with conductor sizes as per NEC 2020, Article 250, based on the provided service conductor information (#2 Cu tapped to 350 kcmil). 3. **Panel Schedules & Differentiation:** * **Schedule C (New):** I will create a new panel schedule for Panel 6 (feeding the common panel), showing a 60/2 amp trip/pole and #6 wire size (corrected from the previous 2-2-2). * **Schedule B:** Will remain as-is, with the addition of the two sump pump circuits (15/1, #14 wire) as specified. * All panels will be clearly differentiated. I will incorporate all your electrician's notes and ensure the drawing is fully compliant. I am ready to begin as soon as you re-share the original drawing and meter photo. Sincerely, Lorenzo