I Read 120v Phase to Ground but 0 Phase to Phase Voltage

• Support Center
• Awarding Notes
• Electrical Service Types and Voltages

This page describes various types of utility electric services and supply voltages. The nominal system supply voltages listed below can vary by ±10% or more than. WattNode^® meter models are bachelor in seven different versions that cover the full range of electric services types and voltages. The new WattNode Wide-Range Modbus covers 100-600 Vac, wye and delta, single-stage and three-stage with a single model. Meters and current transformers are designed for use on either 50 or 60 Hz systems.

Classification of Electrical Services

Alternating current electrical ability distribution systems can exist classified past the following properties:

• Frequency: 50 Hz or 60 Hz
• Number of phases: single or 3 stage
• Number of wires: ii, 3, or iv (not counting the safety ground)
• Neutral present:
  • Wye continued systems take a neutral
  • Delta connected systems typically exercise non accept a neutral
• Voltage classes: (ANSI C84.1-2016)
  • Low Voltage: thou volts or less
  • Medium Voltage: greater than 1000 volts and less than 100 kV
  • High Voltage: greater than 100 kV and equal to or less than 230 kV
  • Actress-High Voltage: greater than 230 kV but less than chiliad kV
  • Ultra-High Voltage: equal to or greater than 1000 kV

Wye Line-to-Neutral Voltage	Wye or Delta Line-to-Line Voltage
120	208
120i	240
230	400
240	415
277	480
347	600

• Line-to-line voltages in iii phase systems are typically one.732 times the phase-to-neutral voltages:
• In symmetrical three-phase electrical system, the phase-to-neutral voltages should be equal if the load is balanced.
• Note: 120^ane Refers to a 3 phase four wire delta service.

Common Electrical Services & Loads

• In the post-obit drawings, the coil symbols represent the secondary winding of a utility service transformer or other step downwards transformer. Electrical code regulations in almost jurisdictions require that the neutral conductor be bonded (connected) to the earth safety basis at the electrical service entrance.

Single Phase Three Wire

Also known as an Edison system, split-phase or center-tapped neutral. This is the most mutual residential service in N America. Line ane to neutral and Line 2 to neutral are used to ability 120 volt lighting and plug loads. Line 1 to Line 2 is used to power 240 volt single stage loads such as a h2o heater, electric range, or air conditioner.

Three Phase Four Wire Wye

The most mutual commercial edifice electrical service in Northward America is 120/208 volt wye, which is used to ability 120 volt plug loads, lighting, and smaller HVAC systems. In larger facilities the voltage is 277/480 volt and used to ability single phase 277 volt lighting and larger HVAC loads. In western Canada 347/600V is common.

Three Phase Iii Wire Delta

Used primarily in industrial facilities to provide ability for three-phase motor loads, and in utility power distribution applications. Nominal service voltages of 240, 400, 480, 600, and higher are typical.

Download: Electrical Service Types and Voltage (AN-129) (PDF, 3 pages)

Uncommon Electrical Services

Three Phase Four Wire Delta

Also known as a loftier-leg or wild-leg delta system. Used in older manufacturing facilities with mostly three-phase motor loads and some 120 volt single-stage lighting and plug loads. Similar to the Iii Phase 3 Wire Delta discussed above only with a center-tap on one of the transformer winding to create neutral for 120 volt single-phase loads. Motors are connected to phase A, B, and C, while single-stage loads are connected to either stage A or C and to neutral. Phase B, the loftier or wild leg, is not used as the voltage to neutral is 208 volt.

Three Stage Two Wire Corner-Grounded Delta

Used to reduce wiring costs past using a service cablevision with simply two insulated conductors rather and so the 3 insulated conductors used in a convention iii stage service entrance.

International Electric Distribution Systems

Description	L–N Vac	L–50 Vac	Countries	WattNode Models (Wye or Delta–Voltage)
ane-Stage, ii-Wire 120 V with neutral	120	–	US	3Y-208
1-Phase, 2-Wire 230 V with neutral	230	–	EU, Others	3Y-400
one-Stage, 2-Wire 208 Five (No neutral)	–	208	US	3D-240
i-Stage, 2-Wire 240 V (No neutral)	–	240	US	3D-240
1-Phase, 3-Wire 120/240 Five	120	240	U.s.	3Y-208
3-Phase, 3-Wire 208 V Delta (No neutral)	–	208	Usa	3D-240
3-Phase, 3-Wire 230 5 Delta (No neutral)	–	230	Norway	3D-240
3-Phase, 3-Wire 400 V Delta (No neutral)	–	400	EU, Others	3D-400
three-Stage, 3-Wire 480 5 Delta (No neutral)	–	480	US	3D-480
3-Phase, 3-Wire 600 V Delta (No neutral)	–	600	US, Canada	noneane
3-Phase, iv-Wire 208Y/120 V	120	208	Usa	3Y-208, 3D-240
3-Phase, four-Wire 400Y/230 5	230	400	EU, Others	3Y-400, 3D-400
iii-Phase, 4-Wire 415Y/240 V	240	415	Australia	3Y-400, 3D-400
3-Phase, 4-Wire 480Y/277 V	277	480	The states	3Y-480, 3D-480
3-Phase, four-Wire 600Y/347 5	347	600	US, Canada	3Y-600
3-Stage four-Wire Delta 120/208/240 Wild Phase	120, 208	240	US	3D-240
3-Stage 4-Wire Delta 240/415/480 Wild Phase	240, 415	480	US	3D-480
3-Phase Corner-Grounded Delta 208/240	–	240	US	3D-240
three-Phase Corner-Grounded Delta 415/480	–	480	U.s.	3D-480

• ¹Past using potential transformers (PTs), WattNode meters can measure 600 volt delta services as well as medium and loftier voltage services.

Questions

• Do 3Y-600 and 3D-600 appear in the US or only in Canada?
  • Yeah, wye and delta 600 volt services are used in both countries but in the US they are less common.
• What services are used in Canada?
  • Mostly 208Y/120 volt and 600Y/347 volt wye services and occasionally 600 volt delta besides.

Encounter Likewise

• Corner-Grounded Delta Circuits
• Four Wire Delta Circuits
• Using Potential Transformers
• 2 Stage Electrical Service

I Read 120v Phase to Ground but 0 Phase to Phase Voltage

Source: https://ctlsys.com/support/electrical_service_types_and_voltages/

Share this post