I have a 230V, 1 phase motor.?

Question

I have a 230V, 2 phase (Ph-Ph) power supply and no neutral or ground wire is available.

Can I run the motor without any harm? Give reason in support of your reply.

Answer 1

you can happily run 230V motor with 230V Ph to Ph supply. The motor need a potential difference of 230 whether it is mono phase or two phase. Even in single phase also to start the motor the single phase will be split into two phases only by inserting a capacitor in one winding in case capacitor induction motor Eg. Ceiling fan Or table fan and by adding a high resistance and low inductance winding in case of split phase induction motor. Though the motor called as single phase motor but it works on two phase only.

Answer 2

I'm not 100% sure but...

If you have a 2 phase 230V power supply (at the wall socket) means that electricity is brought to your home as 230V 3-phase (i.e. you live in USA or somewhere else with this system) which means that if a neutral wire was present (not clear if it is not there or it's hidden/you didn't find it) you could derive a 110-120V 1-phase power supply at the socket from the 3-phase "star" connected system. When you state that you have 230V 2 phase supply (at the socket) I think that probably your power supply brought to your home is a 230V 3-phase "triangle" connected system which employs no neutral wire [although a grounding wire should always be there, even for case 1)].
So your 230V 1-phase motor cannot be employed as is because your system has 2 phases. It might be that your motor was modified to work as 230 V monophase (used to be 380V 3-phase as some industrial motors). You could use condensers to make your engine compatible.
Also, another important thing to check is the frequency at which the motor should run. If it has been modified as described the motor could be of "European" construction and must be run at 50Hz. If you live in USA the frequency employed is 60Hz instead!

Answer 3

With 2 phase lines only you cannot run the motor safely at normal conditions.
But,if there is a return path of current through the other phase line ,you may run.Then no other equipments should not be connected to that line because it may affect their normal operating conditions

Answer 4

u cnt run the single phase motor wit 2 phase supply,bcs there wil b a insulation problem....even though u can run wit two difference phase angled alternating supply wit out the ground or neutral wire...

Answer 5

which you additionally can estimate the horsepower via ability of dividing the rated wattage of the motor via 750 (746 in case you elect to be superb). do no longer neglect, although, that this would desire to appropriate be recognized an *estimation* as a particular quantity of that wattage is basically being lost as warmth via fact of electric resistance of the wiring and friction in the shifting aspects. now no longer one hundred% of the vigor that the motor is making use of is making it to the prop. To calculate horsepower from thrust, we'd additionally would desire to recognize the traditional %. of the boat (in ft according to 2nd) in nonetheless water whilst making use of the trolling motor. you in all probability have that the formulation is: thrust x %. / 550 = horsepower So... A 30 ft.Lb. Motor that pushes a boat to 5 mph (7.3 fps) could be a nil.4 hp motor. that would desire to, in turn, translate (greater or less) to a 300 watt motor or 25 amps at 12v.

Answer 6

You dont really need a ground wire but if it shorts out your circut breaker wont cut out and if you touching it it could kill you but this dousnt happen much 1 in a 1000000 chance
It wont hurt the motor.

Answer 7

Only connect the carcass to ground and it will be no problem.