need to get the 3 hp compressor hooked up ;15 amp any idea what a sparky would cost to wire up from the switch board a new 15 amp socket to go outside on an old 30's house ! thanks regards Kev
r15,
Apr 29, 9:46pm
3hp = 2200w
2200w @ 230v = 9.56A
stick a 10a plug on it and go for gold.
morrisman1,
Apr 29, 9:51pm
but 3hp is the motor output not input. Depending on efficiency of this electric motor it may tip it over 10A, in which case I am not qualified enough to say if its OK or not so would stay on the safe side.
bent_ate,
Apr 29, 10:12pm
3hp bugger all, as above said that is output. There are diff options depending on what sort of cieling, access etc. I would almost be inclined to do a back to back from one of the inside bedrooms or whichever closest depending on inside circut load and where you want to put plug. Bare in mind all outside plugs are RCD required so if back to back is most suited put an RCD socket on the inside plug so the outside (down line is protected) To wire from switchboard inside depending on legnth of run plus materials etc could end up between 300-800+ at a guess. Best to get someone to come properly look an quote. Hope this helps. All the best
rivermist8,
Apr 30, 7:10am
Had a 3HP compressor fitted some time ago for about $500 with a 9 metre run. It is on a 20A fuse with it's own heavy wire and special plug. I was advised that start-up requirement on 3HP is more than a standard 10A could handle long term
kwaka5,
Apr 30, 7:20am
a motor is not a resistive load, it's inductive. your startup is around 6 times rated current and with compressors most start under load so that gets up a little and stresses a 10amp plug and switch. for these it is best to put in a heavy duty outlet and be done with it or if you are not going to relocate it anywhere have it permanantly wired in. preferably on it's own circuit to avoid any nuisence tripping on household circuits. Call a sparky around to give you advice and a quote. :)
fordcrzy,
Apr 30, 4:35pm
have a look on themotor plate and see what its current is at full load.
kevlight,
May 1, 4:26am
Thanks for the good advice,at the moment we are setting up the Home/retirement craft/workshop ,and run a 10 mtr extension cord to the shed; Then, every thing is run of that. We have an RCD on the three pin plug in the house,then the cord is run over head out to the shed. This has worked okay, with one machine on at a time,band saw,drop saw, Trition Bench saw Battery chargers,drill press; Using one machine at a time is a pain, but the RCD will trip if I use two or more at once ,IE: leave one running while using another; But now we have decided to go Air Power and thus the problems of lack ofa decent power supply; Thanks for your suggestions ,looks like ,we will have to bite the bullet and cough up for a dedicated power plug /cableand rated at 15 amps . Any thing else we should be aware of with this set up ! thanks Regards Kev Purhaps that is why the starter on the band saw motor ,failed after five years,the stress on the motor of start ups with not enough amps!
kwaka5,
Dec 30, 3:52am
Get a good supply put into the shed first up. This will make it easier for any thing you wish to do later on. get a couple of quotes and go from there.
Since the public registrations are closed, you must have an invite from a current member to be able to register and post in this thread.
Have an account? Login here.