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Thread: New (Old) Sheraton CUB Lathe
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23rd August 2012, 12:19 AM #16SENIOR MEMBER
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5 or 6 yrs ago, 1200 bucks for me to the front of the block, that was including boring under the road to get it there.
Then it cost another 1200 to get it to the builders pole and the shed, about 25mtr run, and he didn't have to dig the trenches.
I already had the cable to go to the shed, about another 30mtrs,
Then the house plans were changed and I had to get meter box moved about 4 mtrs, $2600 !!
In the meantime my nephew became a sparkie and wired my shed, I had the cable and the switches and we drunk lots of beer.
When I organized the 3 phase nobody asked me what I wanted it for ? I just said I wanted it and it was done.
80 amps at the fuse box and 60 amps at the shed
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23rd August 2012 12:19 AM # ADSGoogle Adsense Advertisement
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23rd August 2012, 12:30 AM #171915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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23rd August 2012, 10:03 AM #18Distracted Member
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Snap!
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23rd August 2012, 11:30 AM #19SENIOR MEMBER
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Wayne I haven't been able to find the thread I was looking for which described the authors build of an RPC with a 415V 3 phase output. In it he used a transformer out of an old welder, -I think it was from a TransArc Tradesman, but am not certain of that. However Greg has done something similar, and I'm sure that he would assist you with some advice on how he built his, if you decide that you might go that way. Regards,
Rob.
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23rd August 2012, 01:44 PM #20SENIOR MEMBER
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If you're in suburbia, there's a good chance 3 phase is already on the street anyway so no expensive transformer (unlike Rob & myself). Your meter box may need upgrading though, but it probably needs it anyway so not a bad thing regardless. That's what I did for my Sydney house.
90A per phase is plenty, 60A is quite adequate.
As I said and Greg also said, if you go the VFD route *none* of the existing lathe wiring is going to be useable. Power cord to VFD, VFD to motor, remote speed control pot to somewhere convenient, on/off buttons on VFD, that's about it. The VFD lets the magic smoke out if you start/stop the motor or plug-reverse it by means other than its controls. Or so people say, I've done it by accident and the unit survived but it was a GEC Ranger 5kW VFD running a pathetic 370 watt motor. The VFD was free, you see...
Initially it'll probably be cheaper to go the VFD path. If you get a serious tool habit, the equation changes. With 415V 3 phase, there's a *lot* more stuff you can buy and just plug in.
PDW
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23rd August 2012, 02:23 PM #21GOLD MEMBER
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Now that all depends what you mean by "wiring". All of the control wiring of my mill is still there and in use. The contactors now just run the VSD instead of switching the 3 phase. Now a simple machine(like my shaper) the contactor was 415V so in that case it goes. So it depends whats inside that control box.
Stuart
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23rd August 2012, 06:44 PM #22SENIOR MEMBER
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Yeah, true, but IMO it's going to be a lot easier to ignore what's there, put the VFD somewhere close to hand, run the cable from the wall outlet to VFD, VFD to motor and just ignore everything that exists. That's what we did when we put a VFD on the lathe at work some years ago. Dead simple to swap back if the machine gets sold or relocated to a place with 415V available.
KISS......
PDW
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23rd August 2012, 06:48 PM #23SENIOR MEMBER
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Bryan,
must be a good lathe if it features on the cover of the first year bible.
Kinda makes it a 'cover lathe'. Did you check if it is also a centrefold
Phil
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24th August 2012, 01:24 PM #24Senior Member
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G'Day Wayne,
Just an old fart thinking aloud, depending on the work you are planning to do and the tooling you intend to use, could you get by with a single phase 240 volt motor ?, I saw a new 4HP motor on Ebay recently for about $150, there would be a fair bit of work rewiring the control gear but it could be a simpler solution (yes I know that single phase motors are not as smooth as 3 phase).
Regards,
Martin
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