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#472086 13th Feb 2011 12:22am
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hi all,

im looking at getting a 2 poster ramp very very soon, however its 3 phase, i dont have 3 phase in my garage only mains, how could i convert my mains into 3 phase? oor convert the ramp?

havent a clue when it comes to this?

ta

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get a phase converter or change the motor.
could be cheaper to change the motor unless you get a used converter.

mrhanky #472137 13th Feb 2011 10:34am
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I thought all commercial premises had 3 phase available, if not actually connected. Ask your electricity supplier.


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chris_gilly #472144 13th Feb 2011 10:53am
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nope, i defo have no 3 phase, i was starting to think about getting a converter, but wouldnt know what one to go for frown

chris_gilly #472152 13th Feb 2011 11:04am
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Once upon a time a friend of mine needed 3 phase in his workshop that was adjacent to his house. What he found was that the neighbours each side were also single phase but each was on a different phase of the same supply. Don't ask how he found that out - way beyond my understanding - but he was obviously correct. What he did was persuade each of his neighbours to let him tap into their mains electric through a meter so he could pay them (gernerously) for the electric he had used.

It worked. Big Pete (as we knew him) had 3-phase in his workshop for years

Snod


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chris_gilly #472164 13th Feb 2011 11:25am
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Yes Snod. It "could" be done, but a bit iffy. Finding out who is on what phase in an urban environment (underground cable as opposed to easy-to-trace overhead) could be fun. Sometimes during a power cut, it's a transformer fault and only one phase goes tits up. That's why some folks in the same road have juice and others don't. They try to balance the phases equally. Adjacent houses with one on and one off would be the pointer.

Getting the leccy board to convert a workshop(?) from single to 3 phase would cost the poor sap on the wrong end of the meter megabucks !

A 3 phase converter (of the right capacity) won't be cheap either. A few years ago I wanted one that would handle (briefly) up to 6kw. The prices were a joke !! I went back to sleep pronto!

chriskay #472183 13th Feb 2011 11:56am
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Originally Posted by chriskay
I thought all commercial premises had 3 phase available, if not actually connected. Ask your electricity supplier.


surprising how many don't esp. new build small ish ones.
where i was on cleveland st. only 2 out of 16 units had 3 phase.

costs about £10k, from what i remember, to have it put in.

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3 phase converter can cost up to £1k bud. Maweb will charge you around £2-£3k for a 3phase supply putting in.


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http://cgi.ebay.co.uk/VARIABLE-FREQ...ents_Supplies_ET&hash=item3cae5e1a33

would this not do?

the motor for the ramp iss a 1.5kw 2800rpm?

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Over to you Sanchez. Some of the specs on this have me flummoxed big time ! (Nothing new there then !)

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The alternative is to see if someone will change the motor to single phase and change the switchgear. If its only 1.5KW it makes you wonder why they chose 3-phase anyway!


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prob would be cheaper if that converter works?, i can get a motor for about £105

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well the ebay item looks ok but not sure about it will have enough power to drive a ramp (id have to see the stats on the ramp.

We use 3 phase motors as they are alot quicker on start up and more controlable.


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Sanchez #472400 13th Feb 2011 6:25pm
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Originally Posted by Sanchez
well the ebay item looks ok but not sure about it will have enough power to drive a ramp (id have to see the stats on the ramp.

We use 3 phase motors as they are alot quicker on start up and more controlable.


is says it can drive a hoist? i went for the 2.2 kw as the ramps only 1.5 so i guess it would (should?) be ok?

cheers buddy!

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Yer, and its not like it will be on constantly, just when you raise and lower the ramp. I think if you were to buy it for a compressor it wouldnt last too long! Up date us with this when you get it bud, quite interested in one me self!


Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!
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