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#472086 - 13th Feb 2011 12:22am 3 phase electric
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
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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#472093 - 13th Feb 2011 1:16am Re: 3 phase electric [Re: chris_gilly]
mrhanky Offline
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Registered: 1st Dec 2010
Posts: 1236
Loc: my house
get a phase converter or change the motor.
could be cheaper to change the motor unless you get a used converter.

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#472137 - 13th Feb 2011 10:34am Re: 3 phase electric [Re: mrhanky]
chriskay Offline
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Registered: 25th Oct 2007
Posts: 4868
Loc: shropshire
I thought all commercial premises had 3 phase available, if not actually connected. Ask your electricity supplier.
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#472144 - 13th Feb 2011 10:53am Re: 3 phase electric [Re: chris_gilly]
chris_gilly Offline

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Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
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

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#472152 - 13th Feb 2011 11:04am Re: 3 phase electric [Re: chris_gilly]
Snodvan Offline

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Registered: 19th Mar 2008
Posts: 1256
Loc: Wallasey Village
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
_________________________
5 Precepts of Buddhism seem appropriate. Refrain from taking life. Refrain from taking that which is not given. Refrain from misconduct. Refrain from lying. Refrain from intoxicants which lead to loss of mindfulness

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#472164 - 13th Feb 2011 11:25am Re: 3 phase electric [Re: chris_gilly]
Pinzgauer
Unregistered


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!

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#472183 - 13th Feb 2011 11:56am Re: 3 phase electric [Re: chriskay]
mrhanky Offline
Forum Addict

Registered: 1st Dec 2010
Posts: 1236
Loc: my house
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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#472258 - 13th Feb 2011 1:37pm Re: 3 phase electric [Re: chris_gilly]
Sanchez Offline

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Registered: 17th Dec 2003
Posts: 8019
Loc: my house
3 phase converter can cost up to £1k bud. Maweb will charge you around £2-£3k for a 3phase supply putting in.
_________________________
Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#472310 - 13th Feb 2011 3:55pm Re: 3 phase electric [Re: chris_gilly]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
http://cgi.ebay.co.uk/VARIABLE-FREQUENCY...=item3cae5e1a33

would this not do?

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

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#472330 - 13th Feb 2011 4:18pm Re: 3 phase electric [Re: chris_gilly]
Pinzgauer
Unregistered


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

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#472372 - 13th Feb 2011 5:36pm Re: 3 phase electric [Re: chris_gilly]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9798
Loc: Birkenhead
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!
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#472377 - 13th Feb 2011 5:48pm Re: 3 phase electric [Re: chris_gilly]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
prob would be cheaper if that converter works?, i can get a motor for about £105

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#472393 - 13th Feb 2011 6:15pm Re: 3 phase electric [Re: chris_gilly]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
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.
_________________________
Uncertainty or not knowing causes depression, Im happy because I know I'm going to die one day!

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#472400 - 13th Feb 2011 6:25pm Re: 3 phase electric [Re: Sanchez]
chris_gilly Offline

Forum Addict

Registered: 15th Feb 2009
Posts: 1950
Loc: tranmere
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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#472403 - 13th Feb 2011 6:29pm Re: 3 phase electric [Re: chris_gilly]
Sanchez Offline

Wiki Veteran

Registered: 17th Dec 2003
Posts: 8019
Loc: my house
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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