If your 3 phase machine says it needs 100A, then it actually needs 173A of single phase power. Crazy, eh?
When doing phase conversion, you are creating a third electrical phase and the power to create that third phase needs to come from somewhere. Whatever your machine says it needs in 3 phase amps, multiply that by 1.73 to determine what it needs in single phase amps.
Breakers can only be loaded up to 80% of their rated capacity. So a 100A breaker can only support a sustained load of 80A.
Example: 100 Amps in 3 Phase = 173 Amps in Single Phase 173 Amps / 80% Breaker Max Load = 216 Amp Min Single Phase Breaker
Breakers come in discrete steps. You will need to select the breaker size just larger than the minimum amperage required. If a breaker is too small, then it will needlessly trip. If a breaker is too large, then your machine will not be protected.
Probably not. Each converter has a recommended breaker size but this assumes the phase converter is running at maximum output. You need a breaker big enough to support whatever machines you will be running. If the phase converter is rated to draw 200A, it doesn’t mean that it WILL draw 200A. It will only draw what it needs to operate. If your machine is less than 200A in 3 phase, then you don't need a breaker for the full 346A.
This tool will allow you calculate the breaker size that you need. The "3 Phase Output" is what your machine needs to run. The "Single Phase Input" is the power source you have available.
*Breaker - This is the minimum sized breaker needed to run just your machine.
It does not include the power required to run the phase converter.
A Digital Phase Converter requires almost no extra power but a Rotary Phase Converter needs to spin a generator and that does require some additional power.
Talk to one of our Journeymen ElectriciansContact Us
Awesome sales and even better after sales service. I highly recommend Electram!
- Brent Electrical Contractor
You can actually talk to people who know what they are doing, didn't oversell, shipped everything quickly.
Fantastic experience. I took a long time to decide but they were always there to answer all my questions. Can only recommend Electram
- Juerg Owner of Woodworking Shop
I bought a unit from these guys last year. Excellent service,above and beyond! I was in a jam needed it in a hurry and they got to me here in B.C. Quick response and very knowledgeable would buy from them in a heartbeat.
- Jody Business owner
The team at Electram benefits from having an incredibly diverse set of skills, and is organized in a way to produce nothing but the best. Everything that goes out the door is checked and rechecked, quality control is outstanding, and they have a wealth of knowledge that they take the time to share with anyone who asks. Highly recommend.
- Jake Electrical Contracor
Ron and the team at Electram provide outstanding customer services and high quality products. I would highly recommend them to other electrical contractors, engineers, or anyone needing their services. Very satisfied and hope to work with them again soon.
- Jesse Owner of Woodworking Shop
Electram was extremely patient with all my questions and very very knowledgeable. Very happy to have found them.
- Tamara Small Business Owner
I purchased a used Electram phase converter on Craigslist and needed help with the connections. The Staff at Electram responded to my emails and phone call immediately and were very helpful answering all of my questions, getting my phase converter up and running quickly. Great customer service. They even has all of the original specs and info on my exact converter.
- Mark Small Business Owner
Thank you for intense service and parts delivery. You people were knowledgeable, patient and helpful. From ordering parts at 4 pm EST and receiving them the next day by noon, not once but 3 times! Absolutely amazing. And a special thanks to Ron as we were troubleshooting a very tricky application. Our customer was very happy and impressed.
- Tony Owner of Orser Technical Services
Fantastic technical and sales support. Really highly recommend these guys!
© Copyright 2021, Electam | All Rights Reserved.