Template · Commercial and industrial

Restaurant service with kitchen panel single line diagram

A 400A 120/208V service with a kitchen panel, shunt-trip circuits under the hood and rooftop units. Use this for a restaurant fit-out: a 400A service, a kitchen panel for the cooking equipment, a panel for the dining room and breakers for the rooftop unit and the make-up air unit.

A free template with typical ratings, conductor callouts and general notes. Open it, change what differs on your job, fill in the title block and export a PDF.

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Restaurant service with kitchen panel single line diagram: A 400A 120/208V service with a kitchen panel, shunt-trip circuits under the hood and rooftop units. — Restaurant service with kitchen panel. 24 devices on an 11 × 17 in sheet with a title block and notes column.

What the reviewer checks on this drawing

The reviewer checks the shunt-trip breakers on the equipment under the hood and what trips them, ground-fault protection in the kitchen, the kitchen feeder’s demand factors, and each HVAC breaker against its nameplate.

What the drawing shows

Every device on the sheet, in the order power reaches it.

Symbol	Label	Rating or detail	Conductors feeding it
Utility source	Utility service	120/208V 3φ 4W
Current transformer	CT cabinet	Utility metering
Circuit breaker	400A 3P	Main	2 sets of 4 #3/0 Cu
Panel	Main distribution panel MDP	400A · 120/208V 3φ 4W
Ground	Grounding electrode	#2 Cu GEC
Circuit breaker	200A 3P	KP
Panel	Kitchen panel KP	225A MLO · 120/208V 3φ 4W	4 #3/0 Cu + #6 G
Circuit breaker	50A 3P	Shunt trip
Load	Electric fryer	14 kW · 208V 3φ, 39A	3 #8 Cu + #10 G
Circuit breaker	60A 3P	Shunt trip
Load	Combi oven	15 kW · 208V 3φ, 42A	3 #6 Cu + #10 G
Circuit breaker	20A 1P	GFCI
Receptacle	Kitchen receptacles		2 #12 Cu + #12 G
Circuit breaker	15A 3P	EF-1
Disconnect switch	Disconnect	30A · NEMA 3R	3 #12 Cu + #12 G
Motor	Hood exhaust fan	1.5 HP · 208V
Circuit breaker	100A 3P	LP
Panelboard	Panel LP	100A · dining room	4 #3 Cu + #8 G
Circuit breaker	60A 3P	RTU-1
Disconnect switch	Disconnect	60A · NEMA 3R	3 #6 Cu + #10 G
Load	RTU-1	MCA 44A · MOCP 60A
Circuit breaker	40A 3P	MAU-1
Disconnect switch	Disconnect	60A · NEMA 3R	3 #8 Cu + #10 G
Load	Make-up air unit	MCA 27A · MOCP 40A

Notes on the sheet

Cooking equipment under the hood is on shunt-trip breakers. When the hood suppression system discharges it trips them and closes the gas valve (NFPA 96 and the mechanical code). Whether the exhaust fan keeps running and the make-up air stops follows the system listing and the AHJ.
Fryer 14 kW ÷ (1.732 × 208V) = 38.9A; × 125% = 48.6A, on a 50A circuit. Combi oven 15 kW = 41.6A; × 125% = 52A, on a 60A circuit. Replace with the nameplate data of the equipment installed.
Kitchen panel feeder may use the demand factors for commercial cooking equipment (NEC Table 220.56). They do not apply to the HVAC.
Ground-fault protection for kitchen receptacles up to 150V to ground, single-phase to 50A and three-phase to 100A, which takes in cord-connected cooking equipment (NEC 210.8(B)).
Service conductors in two parallel sets: 2 × 200A (3/0 Cu) = 400A, on the 400A main. Grounding electrode conductor #2 Cu (NEC Table 250.66).
Available fault current marked on the service equipment (NEC 110.24).

Diagram is schematic and not to scale. Field-verify existing equipment ratings. Ratings and conductor sizes shown are typical. Confirm against the adopted code, the equipment listing and a load calculation before installation. Code references are to the 2023 NEC and the 2024 Canadian Electrical Code: see references and editions.