Design Professionals Construction Professionals Licensing building UP

Design Professional Requirements: Electrical Systems

Applicability of Code

Electrical work, new installation or modifications to existing systems, must comply with the 2025 NYC Electrical Code, which includes both administrative requirements and the 2020 NEC amendments (NFPA 70). In addition, all work under the project must conform to the NYC Construction Codes, such as the Administrative Code, Building Code, Energy Conservation Code, Fuel Gas Code, Mechanical Code and Plumbing Code.

Depending on the location of work being performed, you may also need to comply with other city agencies requirements, such as but not limited to the Fire Department (FDNY), Department of Environmental Protection (DEP), Department of Transportation (DOT), and Landmark Preservation Commission (LPC).

Electrical work that requires submission of electrical plans for review and approval by DOB, shall comply with the following code and regulations that apply.

NOTE: While the followings is a list of key zoning, code and other regulations that may be relevant in the project design, it does not cover ALL applicable regulations.

Project Element	Applicable Code & Regulations
2025 NYC Electrical Code
Administrative Code of NYC	Title 28 Chapter 11 Electrical Code
Minor Electrical Work	Section 28-101.5
Low Voltage Electrical Work	Sections 28-101.5 and 28-105.4.7
Definitions	Article 100
Approval of Electrical Materials, Equipment and Installations	Section A110.2
Spaces about Electrical Equipment 1000V, Nominal/ Less	Section 110.26 and A230.64
Spaces about Electrical Equipment over 1000V, Nominal	Section 110.34 and A230.64
Electrical Equipment Room	Section A110.3(D)
Voltage Drop	Section A210.19
Sizing Electric Conductors	Sections 210.19, 215.2(A)(1), 230.42, 430.21
Sizing Overcurrent Protection Device (OCPD)	Sections, 240.4(B), 240.6, 430.31
Arc-Fault Circuit-Interrupter (AFCI) Protection	Section 210.12
Feeder GFP of Equipment	Section 215.10
Feeder and service load calculations	Part III and Part IV of Article 220
Service Entrance Conductors and Busbar Ampacity	Section A230.42
Maximum # of Service Disconnects	Section 230.71
Grouping of Service Disconnects	Section 230.72
Service GFP of Equipment	Section 230.95
Service Overcurrent Protective Device Coordination	Section A230.96
Elevators Overcurrent Protective Device Coordination	Section A620.62
IT Equipment Overcurrent Protective Device Coordination	Section A645.27
Emergency System Overcurrent Protective Device Coordination	Section A700.32
Legally Required Standby System Overcurrent Protective Device Coordination	Section A701.32
Feeder Taps	Section 240.21(B)
Transformer Secondary Conductors	Section 240.21 (C)
Series Rating	Section 240.86
Arc Energy Reduction	Section 240.67 and 240.87
Reconditioning of Equipment (Switchboards, Switchgear, and Panelboards)	Section 408.8
A.C. Systems to be Grounded	Section 250.20
Grounding Service-Supplied A.C. Systems	Section 250.24
Grounding Separately Derived System	Section 250.30
Size of A.C. Grounding Electrode Conductor	Section 250.66
Size of Equipment Grounding Conductors	Section 250.122
Surge Protective Devices (SPD)	Part II of Article 242
Electric Vehicle Power Transfer equipment rating	Section 625.42
Fire Pump disconnecting means and power wiring	Sections 695.4 and 695.6
Sources of Power for Emergency System	Section 700.12
Energy Storage System (ESS)	Article 706
2022 Construction Codes
Incidental Uses	BC Section 509, Table 509
Fire Protection Systems	BC Chapter 9
Means of Egress	BC Chapter 10
Emergency and Standby Power Systems	BC Chapter 27; Emergency/Standby Power Systems Project Guidelines
Elevators	BC Chapter 30
Construction and Demolition Safety	BC Chapter 33
Flood Zone	BC Appendix G
Voltage Drop	2020 NYC Energy Conservation Code

Other Regulation(s) for Reference

Rules of the City of New York
1 RCNY 4000-01(a)(1) – Electrical Plan Review (EPR) list of electrical installation types that require filing
1 RCNY 4000-01(b)(1) – EPR filing Requirements
1 RCNY 4000-01(b)(1)(i) – EPR filing Method and Applicant
1 RCNY 4000-01(b)(1)(ii) – EPR filing Fee and Payment Method
1 RCNY 4000-01(b)(1)(iii)(A) to (S) – Requirements For Plans and Drawing

Guidelines for Submission of Electrical Systems Project Plans

Prior to preparing the electrical drawings, the Registered Design Professional must perform a pre-design review that analyzes all of the existing site conditions and other components affected by the proposed scope of work. The information provided on the drawings and/or manufacturer specifications must clearly describe all of the work required for the code compliant execution and completion of the project.

The DOB guidelines outlined, provide an organized approach for the preparation of Electrical Drawings to facilitate the plan review process. Drawings shall clearly indicate existing site conditions and proposed conditions affected by the scope of work.

Complete Submission of Electrical Plan Review Drawings

Electrical drawings should represent complete scope of work, including multiple disciplines such as but not limited to architectural, electrical, and fire alarm power. There must be close coordination between all disciplines for proposed scope of work to ensure code compliance.

Electrical Required Documents. Drawings and specifications necessary to convey essential information such as general notes, floor plans, elevations, and details.

All submissions for electrical plan review, for service equipment totaling 1000KVA or more or above 1000Volts A.C/1500Volts D.C., shall include the following plans/drawings:

Title Sheet/Drawing Index. Should clearly describe the project location, using a site/plot plan, and provide necessary drawing notes. Provide a drawing sheet index to assist with navigation.
- Site/Plot Plan. Clearly show the size and location of the lot, show Electrical Utility Property Line Box, or Point of Entry in reference to the Main Electrical Service Room, and location of additional Electric Room(s) that contains large equipment (1000 kVA or larger).

Floor Plan. Show proposed conditions; clearly identify rooms’ names and fully dimension all spaces. Coordinate between all trades / disciplines (architectural, energy, structural, mechanical, and electrical to ensure that the proposed scope of work is complete and shown on all submitted discipline drawings. Drawings must indicate the layout of walls, including required fire ratings; location of penetrations through such fire rated assemblies; roof plan, if work is located on the roof; code references, and path of egress from the equipment room.
One-Line Diagrams. A one-line diagram must be submitted indicating the service equipment and the distribution equipment up to the 2nd level overcurrent protection, showing all overcurrent devices with their ampere rating, make and type, and interrupting current ratings. Frame and trip sizes for circuit breakers must be indicated.
Asbestos Abatement Compliance Required Documents. Asbestos abatement compliance documents shall be submitted and a statement confirming compliance must be on drawings.
Drawings Detail. The drawings listed above are required to include all details for the electrical plan examination in accordance with Administrative Code and Rules of the Department and shall include but not be limited to the following:
- All new work must be clearly identified. In addition, drawings must be clearly marked to indicate new and existing installations to remain.
- The plan view must be drawn to scale, showing the point of service entrance into the building. If the building sets back from the property line, the underground service conductors must be shown, including wire and raceway sizes.
- The means of egress from the switchboard room and where it leads to must be shown. The legal exit(s) to which egress door(s) lead must also be shown.
- When there is more than one service location within a building, drawings must contain a notation indicating that signs are posted at the entrance door of each switchboard room showing the location of all the other switchboard rooms. The location and wording of the signs must be specified.
- Drawings must show grouping of service equipment at the point of service entrance.
- When the service equipment totals 2000 KVA or larger, the drawing must show ventilation of the room (this may be in the form of a note on the drawing).
- Drawings must indicate that transformers are properly grounded. Service and distribution equipment proposed for future installation must be marked on the drawings as future.
- The drawing must show a method of cooling, with or without fresh air circulation, to prevent temperature rise in the room, when the service equipment totals 2000 KVA or larger (this may be in the form of a note on the drawing).
- Drawings must indicate that transformers are properly grounded. Service and distribution equipment proposed for future installation must be marked on the drawings as future.
- All voltages must be clearly shown on the drawings, which must include voltages pertaining to all of the equipment overcurrent protection up to and including the second level protection.
- When a generator (or other non-utility source) is part of a 1000 KVA submission and the generator itself is rated below 1000 KVA, a one-line diagram must be submitted showing how the generator is connected to the normal service. The drawings must include the grounding of the generator frame and neutral bonding, if needed (four pole transfer device). For generators rated 1000 KVA or larger, a room layout must be submitted along with a one-line diagram.

Submission of Project Application

When submitting documents to DOB, a Registered Design Professional, who may be the Applicant of Record, is responsible for the submission of a complete package as summarized below.

Job Number Request. Request a Job Number by emailing ElecJobNo@buildings.nyc.gov
Pay Fee. Pay required fees in person at 280 Broadway, 1st Floor
Application Intake. Submit plans as described above via email to: ElecPlanReview@buildings.nyc.gov.
Statement. A statement confirming that all fuses and/or circuit breakers have been coordinated for selective short circuit overcurrent protection must be on the drawing.
Required Documents. Based on scope of project, following submissions may have to accompany drawings at intake.
- DEP - Asbestos Abatement

Review. Review and approval of plans will be conducted by a DOB electrical plan examiner.
- Objections and Status. Objections and status of reviews will be communicated via email.
- Approval. The job number will be updated by appending the suffix “A1” to indicate a Project final approval. The numerical portion will increment with each approved PAA for the same job, reflecting the sequence of approvals (e.g., A1, A2, A3, etc.).

Electrical Permit Application. Electrical permit application can be filed electronically by a Master Electrician once the Department issues the Approval No. above.
Final Approval. Before the Electrical Inspection is requested for the project, the applicant must receive final approval for the project, the following must be submitted to the Department:
1. Post Amendment Approval (PAA). Where installation of equipment differs from the original approved drawings, amended drawings showing the as-built condition must be filed with the Department prior to electrical inspection.
2. Selective Coordination Report. A selective coordination report prepared by a professional engineer must be filed with the Department prior to electrical inspection. Such engineer may be different from the applicant.

Special and Progress Inspections

As per Chapter 17 of the Building Code, new building work may require certain Special and Progress Inspections to be performed during and at the end of construction as outlined in the table below. Prior to approval, the Applicant of Record is required to identify all required Special and Progress Inspections (BC 1704.1). Prior to DOB permit issuance, the owner must typically engage a registered Special Inspection Agency (SIA) who will take responsibility for the Special and Progress Inspections. The Applicant of Record may perform these inspections if they are also an SIA. Inspection discrepancies and hazardous conditions shall be reported to the super-intendment of construction, as well as to the site safety coordinator or site safety manager, for correction, per BB 2016-006 and 1 RCNY 101-06. Per BC 1704.1, the contractor cannot hire the special inspector.

Based on the scope of work, a new building project may be required to comply with the following Special and Progress Inspection requirements:

Special/Progress Inspection	Description Of Code Requirements
Fire-resistant Penetration and Joists	Special Inspections for penetration of fire-resistant elements and assemblies; and related firestops in accordance with Sections BC 1705.17.1 and BC 714.3.1.

Required Electrical System Inspections

In accordance with section EC 86, in addition to any inspections otherwise required by NYC codes or applicable rules, the following inspections shall be required:

Energy Code Inspections:

Inspections required by the New York City Energy Conservation Code shall be made in accordance with the rules of the department, as applicable.

Electrical Inspection – Final Inspection

Licensed Master and Special Electricians and property owners are responsible for scheduling and completing all required inspections. Prior to scheduling an inspection, Electricians must:

Confirm that all electrical work completed matches the approved drawings
Confirm that relevant progress and special inspections are on-site and clearly approved by the SIA.
Periodically check that no safety hazards exist on the active construction project
Confirm that work complies with code and other requirements

Inspection Requests

The Department’s online portal for scheduling appointments for required DOB inspections must be used. DOB NOW provides robust online accounts, making it easier to submit applications, make payments, schedule appointments, check the status of an application or inspection, pull permits, and make renewals.