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Thread: Do I really need a 15 AMP plug
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30th July 2013, 06:49 PM #1
Do I really need a 15 AMP plug
Hi WWF
I am looking to purchase the Hafco BP-430 bandsaw. It has. 2hp motor and comes with a 15amp plug. I forgot to look at the plate on the motor when I was in the shop so don't know the exact current it draws. However using the following
Electrical Motor Calculator
and using default values for efficiency and power factor I think I t needs about 6 amps. Thus a 10amp plug should be fine.
i also have the Hafco Dust extractor which also has a 2hp motor and only a 10amp plug.
Anyone see any major flaws in my logic?
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30th July 2013 06:49 PM # ADSGoogle Adsense Advertisement
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30th July 2013, 07:56 PM #2Skwair2rownd
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Get yourself a 15amp circuit and plug. That way no problems.
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30th July 2013, 10:17 PM #3.
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It looks like they might have been a bit sloppy with the cutting and pasting from larger machines on the website.
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30th July 2013, 10:20 PM #4
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30th July 2013, 10:35 PM #5
Hi again Damienol,
I noticed that too on H&F website when I was looking at that saw on your behalf for another post. I almost mentioned in my reply that I did not think it needed a 15 amp plug as it is only 2hp motor and single phase.
I would be cautious, however, of running the 2hp saw and the 2hp dusty off the same circuit. Do not under any circumstances start them both on the same 10 amp circuit at the same time as start-up current is much higher than running current. Use common sense, if the circuit breaker trips more than once, try accessing another circuit for each machine even if it means running an extention lead from another circuit in the house.
In any case, if you follow the following advice from BobL in another thread, you cant go wrong
I'm doing my May Challenge - I may or may not give a #*c&
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30th July 2013, 10:36 PM #6GOLD MEMBER
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Typically, I like pushing the limits. However, in this case, if it came with a 15 AMP plug and was electrically approved with it - do not alter it. To do so will definitely void your insurance.
As an aside, you could contact the electrical approval authority, to verify what rating of plug and lead can be used with the bandsaw on the approval certificate. If it was approved with an alternate 10 AMP plug, then if you wished, change it.
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30th July 2013, 11:08 PM #7Senior Member
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Running an extension lead from another circuit in the house will probably mean a drop in voltage and will lead to the premature death of whatever is plugged in.
Start Amps are often quoted as 3 to 5 times the run Amps, not accurate but a good guide, possibly 30 Amps on that circuit. The saw manufacturer or reseller should be able to answer why it has a 15 Amp plug. However it is generally 10 Amp plug on 2 hp and 15 Amp on 3 hp. If all else fails call a sparky for a quote on a 15Amp circuit, quotes are free and may come with a solution.
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30th July 2013, 11:08 PM #8
Reply to doug3030
Thanks Doug
I have already experienced a tripped circuit when firing up my shopvac while the Dusty was booting up. Timing is key.
The man cave is wired with 4mm 2CE so significantly larger then normal house wiring so no probs there with overheating. The old man is a sparky so might ask him if it worth changing the CB
The old man has also suggested that if worst comes to fruition he can installed a 15Amp GPO in the CB box and I will just have to run an extension lead to the bandsaw every time I need to use it. Not ideal however significantly more palatable then forking out $1000 plus to run another circuit to the man cave.
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30th July 2013, 11:11 PM #9
Reply to Wrongwayfirst
Thanks for your response Wrongwayfirst
Re the extension lead comment, I have 250v to the house so any drop in voltage incurred through the use of an extension lead should be palatable
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30th July 2013, 11:39 PM #10
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31st July 2013, 12:22 AM #11GOLD MEMBER
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A shed without a 15amp socket is not a real shed.
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31st July 2013, 07:56 AM #12Retired
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31st July 2013, 09:02 AM #13
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31st July 2013, 11:44 AM #14.
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31st July 2013, 12:55 PM #15SENIOR MEMBER
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