PANEL LOAD CALCULATION - Factory Built Structures & Commercial Coaches - Electrical Plan Approval Request

Q: How are connected load and demand calculated load defined in this document?

Connected load is the nameplate rating of appliances permanently connected on a specific circuit, plus general-use receptacle VA and lighting fixture maximum VA, and full-load motor ratings. Demand calculated load is the connected load after code-required adjustment factors are applied and expressed in KVA, then converted to amps for sizing feeders and equipment.

Q: What does the document require for electrical plan submission before approval review?

It lists required items such as electrical floor plans with related drawings (minimum two complete sets), a one line/riser diagram, specifications, load calculations, fault calculations, metered demand records, and panel schedules.

Q: What fee review elements are included in the plan approval request form?

The form includes electrical plan submission fee, service/feeder ampacity unit categories, possible generator-related fees, surcharges (including over 600 volts), and totals for fees paid, along with notes about altered services or feeders being charged according to the fee schedule.

Sep 26, 2026

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Panel load calculation worksheet and electrical plan approval request for factory built structures and commercial coaches, including main distribution panel sizing details and spare conduit and wiring provisions. The document defines connected load and demand calculated load, explains adjustment factors and conversion between KVA and amps for feeder and equipment sizing, and provides sample one-line diagram references. It also includes instructions and fee-approval form fields for submission, department use, electrical plan review units, ampacity brackets, surcharges, and required plan items and checklists.

LanguageEnglish

CategoryPaper Templates

FormatPDF

Pages5

Reading Time2 min

AccessFree to download

Definitions

Panel load calculation inputs

Main distribution panel and spare details

Sample one-line diagram

Electrical plan approval request form fields

Electrical plan review fee ledger and instructions

PANEL LOAD CALCULATION Date Manufacturer's Serial Number Panel Load Type Connected Load Demand Factor Demand Load Lighting Gen use receptacles <10 KVA Gen use receptacles > 10 KVA Motors & compressors (Largest) Computer receptacles Mechanical & HVAC Kitchen equipment Miscellaneous Miscellaneous | | | --- | | | | | | | | | | | X 125% X 100% X 50% X 100% X 25% X 100% X 100% X % X 100% X % X % X % = = = = = = = = = = = = | | | --- | | | | | | | | | | | | | | | | | | | | | Definitions: Connected amps Demand amps Connected load 1. The nameplate rating of all appliances that are fastened in place, permanently connected to located to be on specific circuit. (Water heaters, space heaters, ranges, refrigerators, etc.) 2. 180 VA for each general use receptacle 3. Maximum VA of lighting fixtures 4. Full load amps/KVA ofall motors from Table 430-147, 148, 149 and 150 of the National Electric Code Demand calculated load The connected load after any code required adjustment factor has been applied. Load calculations shall be submitted/expressed in KVA and converted to amps when sizing feeders and equipment. F623-017-000 panel load calculation 8-98 (page 1 of 5) MAIN DISTRIBUTION PANEL (MKP), 1200A, 208/ 120V, 3 PHASE SPARE SPARE (2) 2" GALV RIGID STEEL OR (1) 3" GALV RIGID STEEL 2 SETS (4) 3/0 THHN CU & \#3 CU GND (1) 2" GALV RIGID STEEL (4) 3/0 THHN CU & \#8 CU GND (1) 2" GALV RIGID STEEL (4) 3/0 THHN CU & \#6 CU GND (1) 2" GALV RIGID STEEL (4) 3/0 THHN CU & \#6 CU GND SAMPLE ONE-LINE DIAGRAM | | | --- | | | . . . . . . . . . . . . . . M 200A 3P 200A 200A 100A 400A 200A 3P 3P 3P 3P 3P <10000A <10000A <10000A <10000A SYM SYM SYM SYM 200A 225A MLO 100A MLO 400A MLO 400A MLO M .BKR BUS BUS BUS BUS PANEL PANEL PANEL PANEL PANEL B C K K A SEC . 1 SEC .2 FEED-THRU LUGS 225A BUS )) 1200A 3P 1200A BUS x 37650A SYM . F623-017-000 sample one-line diagram 8-98 (page 2 of 5) For Postal Delivery Department of Labor and Industries Factory Assembled Structures PO Box 44430 Olympia WA 98504-4430 For Non-Postal Delivery (e.g., FedX, UPS) Department of Labor and Industries Factory Assembled Structures 7273 Linderson Way SW Tumwater WA 98501 FB CCF CH 11 WA Only WA Rev/ORCourtesy OR Rev/WA Courtesy Other state State ID reciprocity 3 [www.wa.gov/lni](www.wa.gov/lni) (case sensitive) ELECTRICAL PLAN APPROVAL REQUEST FACTORY BUILT STRUCTURES & COMMERCIAL COACHES Manufacturer Applicant: Fill out completely 1 Mfg No. 2 Plans to be returned to: Address City/State/ZIP FOR DEPARTMENT USE ONLY | Fee Ledger Sheet \# | | Application ID | | --- | --- | --- | | Ap No. | Date approved | Expiration date | Contact person's printed name: Date Fee enclosed $ Signature Phone No FAX No 4 New plan Addendum Renewal Resubmittal Plan App oval No Building Serial No. Area Sq. Ft Occupancey Group:/ / Use: 7 8 9 10 5 11 6 Installation locatio 13 City State ZIP+4 County | ELECTRICAL PLAN REVIEW (When required by WAC 296-46-140, Plan review for educational, institutional or health care facilities and other buildings. See WAC 296-150 C/F-3000 for fee schedule) | Unit | | | Unit
Amount | Total
Amount | | | --- | --- | --- | --- | --- | --- | --- | | Electrical plan submission fee 14 | | | | | | | | Service/Feeder ampacity: Each design option is addtional. | | | | | | | | 0-100 | | | | | | | | 101-200 | | | | | | | | | | | | | | | | 201-400 | | | | | | | | 401-600 | | | | | | | | 601-800 f623-016-000 sample | | | | | | | | | | | | | | | | 801-1000 | | | | | | | | | | | | | | | | Over 1000 | | | | | | | | | | | | | | | | instructions | | | | | | | | | | | | | | | | Over 600 volts surcharge

FAQs

How are connected load and demand calculated load defined in this document?

Connected load is the nameplate rating of appliances permanently connected on a specific circuit, plus general-use receptacle VA and lighting fixture maximum VA, and full-load motor ratings. Demand calculated load is the connected load after code-required adjustment factors are applied and expressed in KVA, then converted to amps for sizing feeders and equipment.

What does the document require for electrical plan submission before approval review?

It lists required items such as electrical floor plans with related drawings (minimum two complete sets), a one line/riser diagram, specifications, load calculations, fault calculations, metered demand records, and panel schedules.

What fee review elements are included in the plan approval request form?

The form includes electrical plan submission fee, service/feeder ampacity unit categories, possible generator-related fees, surcharges (including over 600 volts), and totals for fees paid, along with notes about altered services or feeders being charged according to the fee schedule.

Sep 26, 2026

Upload by Ezra