Ignoramus3431877 <ignoramus3431877@NOSPAM.3431877.invalid> writes:

> Get a phase converter with a 10 HP idler motor -- you will be golden
>
> i
>
>> On 2022-10-10, Richard Smith <null@void.com> wrote:
>> ...

That's right - good to see you again Iggy

Some online advice with phase converters leads to
7.5HP idler -> 5.5HP max motor
You say - 10HP idler...

Does the idler help with motor starts?
Eg. if I got an ex-industrial compressor with 3-phase motor, would the
idler prevent whatever causes the maximum single-phase motor power to
be 3HP apply?

Sorry to be so clueless on this subject.

On 08/11/2022 22:53, Richard Smith wrote:
> Ignoramus3431877 <ignoramus3431877@NOSPAM.3431877.invalid> writes:
>
>> Get a phase converter with a 10 HP idler motor -- you will be golden
>>
>> i
>>
>>> On 2022-10-10, Richard Smith <null@void.com> wrote:
>>> ...
> That's right - good to see you again Iggy
>
> Some online advice with phase converters leads to
> 7.5HP idler -> 5.5HP max motor
> You say - 10HP idler...
>
> Does the idler help with motor starts?
> Eg. if I got an ex-industrial compressor with 3-phase motor, would the
> idler prevent whatever causes the maximum single-phase motor power to
> be 3HP apply?
>
> Sorry to be so clueless on this subject.

Richard,

The 3hp limit only applies to the UK 13A domestic socket, larger single
phase motors just need a bigger supply. I repaired a 4hp 1ph  motor for
a table saw earlier in the year that likely used a 32A supply which is
what I used to test the repair. BTW I have a Westinghouse 4kVA 3ph
converter and that has a 5hp dummy motor and runs off a 13A supply fine
although it does fatigue the 13A fuse over time. The largest motor I run
off that is a 3hp on my Harrison M300.

Thanks Dave for telling me the real deal as you experience it on UK
supply.

Digression from "phase converter" but on theme of what can be done
with what with domestic supply...

The problem with compressor plugging into "domestic" supply is moving
it about.
With the currently maybe fanciful idea of getting a boat - steel -
where needle-descaler and "autobody-sized" gritblast gun for running
paint repair.
For down by the water, maybe best stay at 13A for the power you can
blag. So you have 7 c.f.m. at 90 p.s.i. of compressed air.
Gets you the spot repairs done(?)

I'll post a nautical one which is right off this topic - recent
experience.

Rich S

On 09/11/2022 04:12, Richard Smith wrote:
> Thanks Dave for telling me the real deal as you experience it on UK
> supply.
>
> Digression from "phase converter" but on theme of what can be done
> with what with domestic supply...
>
> The problem with compressor plugging into "domestic" supply is moving
> it about.
> With the currently maybe fanciful idea of getting a boat - steel -
> where needle-descaler and "autobody-sized" gritblast gun for running
> paint repair.
> For down by the water, maybe best stay at 13A for the power you can
> blag. So you have 7 c.f.m. at 90 p.s.i. of compressed air.
> Gets you the spot repairs done(?)
>
> I'll post a nautical one which is right off this topic - recent
> experience.
>
> Rich S

Richard,

    A few years ago I came across a guy using a needle scaler to deal
with some rust on his narrow boat on the local canal which is an unusual
sight in my experience, he was using a petrol powered compressor.