How to size a house service?

220.82: 100% of first 10 kVA + 40% remainder.

How many kitchen circuits?

Two 20 A small-appliance circuits (220.52).

NEC 2023, Article 220 Load calculations — translation

NEC Article 220: 3 VA/ft² lighting, 180 VA receptacles, optional dwelling method (220.82).

🇷🇺 PUE — Rules for Electrical Installations (7th ed.)🕰️ PUE-6 — Rules for Electrical Installations (6th ed., 1985)🇺🇸 NEC — National Electrical Code (NFPA 70)🇪🇺 IEC 60364 / HD 60364 (EU national codes)🌎 NOM-001-SEDE, NBR 5410, AEA 90364, RETIE, NCh 4, CNE 🇨🇳 GB 50054, GB 50303, JGJ 16, GB/T 16895 (IEC 60364)🇮🇳 IS 732

Document

Document	NEC 2023, Article 220 Load calculations
Edition	2023
Status	Current (latest NEC edition)
Issued by	NFPA
Applies to	Load calculations: standard and optional dwelling methods

Document structure

№	Chapter / section
220.10–220.20	General calculation rules
220.42–220.60	Lighting, receptacles, appliances
220.82	Optional dwelling method

NEC 2023, Article 210 Branch Circuits NEC 2023, Article 250 Grounding and Bonding NEC 2023, Articles 300 (wiring) and 310 (conductors)NEC 2023, Article 230 Services NEC 2023, Article 240 Overcurrent Protection NEC 2023, Article 625 EV Charging NEC 2023, Article 110 General requirements NEC 2023, Article 220 Load calculations NEC 2023, Article 517 Medical locations NEC 2023, Article 500 Hazardous locations

Lighting and receptacles (220.42–220.60)

220.12 3 VA per ft² for dwelling lighting; 220.14(I) 180 VA per receptacle; 220.52 two 20 A kitchen circuits (1500 VA each); 220.54 laundry 1500 VA.

Optional method (220.82)

100% of the first 10 kVA + 40% of the remainder; plus AC units (100%).

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Data is for reference. Final design decisions must follow current regulations and a qualified engineer.
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