Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
What? How come?
Techman
Member Posts: 2,144
Working on a regular AC system (RTU , new to me) my cohort said "we have 216v ,L1 to L2 .BUT, BUT we have 123v to ground L 1 & 123 V to ground L2! What What? How How come???
0
Comments
-
3ø Wye System
With a tad of imbalance (should be 213V L-L if all is well.)0 -
electrician time
How is it wired in breaker box? Do you have 220 there?0 -
What?
Our measurements were at the AC unit disconnect. Do not know what is at the CB panel.0 -
I thought you were posting another quiz
In a three phase wye system, line to line voltage is equal to the √3 times the line to neutral voltage.
123V line to neutral times 1.732 = 213 V line to line.
Slight variations can be caused by nonlinear loading or the use of a DVM which does not measure true RMS AC.0 -
Voltages.
Truth be told , I'm asking for a fellow wallie ! He didn't want to ask! Shame on him!!!!Your welome!
SWEI- Thanks! I know about that stuff ,but I don't know about that stuff . Know what I mean?0
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 99 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 916 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 53 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements