Electrical Troubleshooting Question:
On a 3 phase wire system, does it matter what the orientation of the BLACK, RED and BLUE is when hooking up an industrial AC unit?
And if so can it make the compressor run backwards?
Thanks,
Chad.
Hi Chad - Great Electrical Repair Question!
3 Phase Electric Motor Wiring and Motor Rotation
When connecting any motor to 3 phase power you could find that the rotation is wrong, and if it is all you have to do is shut off the power and swap any two lines of the 3 phase power and this will change the rotation.
If you need to have the rotation correct the first time then simply get a phase rotation meter that can be used to see what the rotation is before you connect to the equipment.
IMPORTANT: Be very careful when working with 3-phase power.
Be Careful and Be Safe - Never Work on Energized Circuits!
Be sure to get your copy of my BIG Book: Perfect for Homeowners, Students and Electricians Includes:
Home Electrical Wiring - Room by Room
120 Volt Circuits
240 Volt Circuits
Multi-Wired Circuits
Wiring Methods for Installing Home Electrical Circuit Wiring
Electrical Codes for Home Electrical Wiring
....and much more.
RELATED
More about 3 phase air conditioner
How to Wire a 3 Phase Air Compressor How is an air compressor wired and where do the wires go? Wiring a 3 Phase Motor for an Air Compressor, The Basic Requirements for Wiring Electric Motors, 3 Phase Motor Circuits.
Understanding Air Conditioning Circuit Requirements Electrical Troubleshooting tips for an Air Conditioner: I need a 2 pole 20 amp breaker for my panel box, It is for the wire to my air conditioning unit. The specs are rated voltage...
Air Conditioners and Electric Voltage Converters I want to make use of the 220 volt cloth dryer outlet down my basement. My idea is to run the 120V (15 amp) portable 12,000 BTU Air-conditioner unit using the cloth dryer 220V outlet...
Improving Power Quality The Importance of Power Conditioning and Surge Protection: Power Conditioning may help prevent Electrical Failures from Abnormal Conditions, Power Conditioning to Protect Your Electronic Devices and Cell Phone
Electrical Power Quality How to Select a Power Conditioning Unit - Constant-voltage transformers which provide voltage regulation, filter noise, and suppress surges to protect connected equipment.
Electrical Project Skill Level:
Intermediate to Advanced - Best performed by a Licensed Electrical Contractor.
Electrical Tools Required:
Basic Electricians Pouch Hand Tools and a Voltage Tester.
Estimated Time:
Depends on personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area. Electrical Safety:
Identify the panel circuits found in the project area, turn them OFF and Tag them with a Note before working with the electrical wiring.
Electrical Wiring Parts and Materials:
Electrical parts and materials for home wiring projects should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections:
Installing additional home electrical wiring should be done according to local and national electrical codes with a permit and be inspected.
This is a testing tool that is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
This is great to troubleshoot a problem with outlet circuit wiring, is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets
Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency
Lights indicate if wiring is correct and indicator light chart is included
Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect, Very handy and easy to use.
A wire stripping tool used to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets.
I think your site offers the the clearest and best electrical information for homeowners I have ever seen on the net.You have given me confidence to do my own projects which I never had before. THANK YOU! Paul, from Foxboro, Massachusetts
I wish I found this site earlier, it is by far the best electrical related resource I have found on the web. George, from Scranton, Pennsylvania
I love this site for an office worker that does not know anything about electric wiring. Bill, from New York City, New York
This site is so much better than the 3 books I just bought, I wish I came here first. Collin, from Grand Rapids, Michigan
