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Thread: 3 Phase question
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10th October 2013, 02:55 PM #1Senior Member
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3 Phase question
Getting there with the new workshop setup…
I have multiple 3 phase points and they are all 4 pin and say: 10 AMP, 50Hz, 500v.
My question.
Will my current 3 phase work with these machines:
Table saw: 5hp 415v 3 phase
Thicknesser: 5hp 415v 3 phase
Anyone know a good sparky that can answer this and install a clear vue?
Many thanks again!
Cam.
Edit:
Inserted by Admin (and it would be good if only people actually qualified to answer these questions would reply)
DISCLAIMER
No liability is accepted by UBeaut or the Wood Working Forum's administrators
or moderators for advice offered by members posting replies
or asking questions regarding electrical work.
We strongly advise contacting a Licensed Tradeperson for all electrical work.WARNING
Information supplied within posts is not to be considered as detailed formal instructions to complete a task.
Members following such information do so at their own risk
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10th October 2013 02:55 PM # ADSGoogle Adsense Advertisement
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10th October 2013, 03:39 PM #2
Short answer, Yes they will work. Can I install a ClearVue for you? No.
Those were the droids I was looking for.
https://autoblastgates.com.au
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10th October 2013, 05:39 PM #3Senior Member
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Great! Whats the 'long' answer?
Do you mean just plug it in and away she goes, or yes it will work but I need to do xyz first?
Thanks for the help.
Cam
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10th October 2013, 05:58 PM #4
10amp * 3 Phase * 415Volt = 10 * 3 * 415 = 12.450Kw / 746 Watt/Hp = 16.7Hp
5hp is a breeze.
Qualifications.
24yrs in electronics
Technician, senior technician and technical officier
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10th October 2013, 06:20 PM #5Senior Member
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10th October 2013, 09:08 PM #6
Actually that's wrong. You multiply by the square root of three, not three.
If the plugs on your machines match the sockets, then you are probably right to go.
If there are more pins or protruding bits that stop it going in, you need a sparky.
RegardsHugh
Enough is enough, more than enough is too much.
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10th October 2013, 09:25 PM #7.
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10th October 2013, 09:49 PM #8Actually that's wrong. You multiply by the square root of three, not three.
Knew it was a bit of time back....Slowly losing the memory.
10amp * 3^.5 Phase * 415Volt = 10 * 3^.5 * 415 = 7.188Kw / 746 Watt/Hp = 9.6Hp
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10th October 2013, 10:17 PM #9
As others have already mentioned, 10 Amp outlets are fine as the full load current for a 5HP motor is around 7.7 amps. The pin configuration of your plug should match the sockets and you need to check direction. A 4 pin plug will fit into a 5 pin socket but not the other way round. On some older plugs a 10 amp plug will also fit into a 15 Amp socket, although I don't know why I mentioned that because you have 10 amp outlets . If the existing plugs don't fit then the cheapest thing to replace is the plug. Sockets cost an arm and a leg.
If your machines have a 5 pin plug (sometimes the neutral is used for lower voltage control) and you only have 4 pin outlets, you will need to have a neutral connected to the socket. If you're lucky it may be sitting there just not hooked up, if you're unlucky you will need to have a neutral wire run from the switchboard and the outlet replaced with a 5 pin version. I know, too much information but your sparky will be able to quickly let you know what you need. (Having said that, a thicky and a TS are unlikely to need a neutral).Those were the droids I was looking for.
https://autoblastgates.com.au
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10th October 2013, 11:05 PM #10Banned
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Allow
Allow me to make an "unqualified' observation.
The outlet you need should match the plug that comes on your machine.
My 5 Hp 3 phase Hare and Forbes has a 20 amp plug fitted.
Yes it might well run off a 10 amp outlet.... (as suggested above) except for one small problem
20 amp Plug!
20 amp outlet!
Now lets look at a 10 amp outlet.
Yes the 10 amp outlet has a different keyway to the 20 amp plug (in short it won't plug in, numbers of pins 4 or 5 not withstanding)- so if your machine / machines come from the manufacturer supplied with a 20 amp plug as mine did (suggesting they need a 20 amp circuit for 5 Hp) and you fit all 10 amp outlets...then you will have to change all your plugs over to a lower amperage (10A) Plug!
I've no idea, if that will void your machine warranty or not?.
I'm not qualified to comment - (but I'm also not blind - or stupid!).
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10th October 2013, 11:10 PM #11
As I said if it dose not plug straight in get some one who knows to have a look.
Hugh
Enough is enough, more than enough is too much.
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11th October 2013, 09:05 AM #12Senior Member
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As usual, great info. Thanks very much for the help.
I'll check out the plug/pin configuration and go from there.
Cheers!
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