3 Phase or Single Phase
3 Phase or Single Phase
(OP)
I have 4 systems used to perform a process – a press, extruder, and two ovens. In the past three of the four units were 240-230V single phase systems with one of the ovens being a 3 phase 208V system (Delta).
Someone told the ME I’m working with that the three phase saves on your electrical bill because it keeps the line balanced; however, it would take 8 of these ovens to significantly imbalance the line according to the manufacturer of the heater elements (How can I prove this?). Now the ME is pushing to have all four units 3 phase and the bosses are buying in. But I do not see the use because all we will do with the 3 phase within the other three units is pull off one phase for one single phase 3 horse motor (or smaller heater) and another phase for the logic PS.
I personally would like to use 240V single phase on all because three of the systems would not need to be changed and I know you can use the standard three prong 240V plug – which most facilities and possible customers would have.
Are there any industry standard plugs/receptacles for 3 phase 208V power or do you need to use J-Box connections?
What are the advantages/disadvantages of 3 phase over single phase here or viscera?
Someone told the ME I’m working with that the three phase saves on your electrical bill because it keeps the line balanced; however, it would take 8 of these ovens to significantly imbalance the line according to the manufacturer of the heater elements (How can I prove this?). Now the ME is pushing to have all four units 3 phase and the bosses are buying in. But I do not see the use because all we will do with the 3 phase within the other three units is pull off one phase for one single phase 3 horse motor (or smaller heater) and another phase for the logic PS.
I personally would like to use 240V single phase on all because three of the systems would not need to be changed and I know you can use the standard three prong 240V plug – which most facilities and possible customers would have.
Are there any industry standard plugs/receptacles for 3 phase 208V power or do you need to use J-Box connections?
What are the advantages/disadvantages of 3 phase over single phase here or viscera?






RE: 3 Phase or Single Phase
RE: 3 Phase or Single Phase
RE: 3 Phase or Single Phase
That is a very odd way of calculating a demand charge! Is this a U.S. utility? If so, I would ask to see a copy of their rate structure.
Greg May
Two Sockets - Two Meters, Inc.
WEB: www.socket-two-me.com
RE: 3 Phase or Single Phase