Lou Decruss wrote:
> On Thu, 06 Aug 2009 17:09:36 +0200, jack > wrote:
>
>> Andy wrote:
>>> OK. Thanks! Except the 230?
>>>
>>> Where are you getting your info? From 2D Jack?? ? [waving]
>>>
>>> Best,
>>>
>>> Andy
>> Hi Andy
>>
>> some bright sparks re-defined 220 on some countries from 220 +/- 10% to
>> 230 -10%/+5% - max is still 240 or thereabouts, but you can get away
>> with a few less milliAmps over the wire
>
> I've not heard of this -10/+5. Sounds weird. In the US it's 120/240
> +/- 10%. 220 hasn't been used here in a long time. 230 is used for
> motor rating but never the voltage a US power company tries to
> achieve. If a shop that had a hundred 240 volt motors of some size
> only got 230 volts they'd be bitching big time.
>
> Lou

Not all of us live in the United States. Let me refer you to
http://en.wikipedia.org/wiki/Mains_p...ound_the_world. Moving
continents made me aware of the relativity of 'codes'.

j.

wrote:
> If, this is an old circuit that uses screw in fuses, I'd make sure the
> fuse size is correct for the wire size and again, it's probably OK. The
> problem with those old screw in type fuses is they are interchangable
> and it's easy to put a 30A fuse into a circuit that really should have
> a 15A fuse. *That* is dangerous. Don't even get me started on people
> who put pennies behind the fuses . . .
>
My amazement at US 'standards' never ends. In .eu we had screw type
fuses, however the distribution panel had inserts (that could only be
installed with a special tool that was (by whichever means) kept from
being readily available in DIY shops. A 25A fuse would not fit in a 16A
panel insert.

-j

jack > wrote:
> wrote:
> > If, this is an old circuit that uses screw in fuses, I'd make sure the
> > fuse size is correct for the wire size and again, it's probably OK. The
> > problem with those old screw in type fuses is they are interchangable
> > and it's easy to put a 30A fuse into a circuit that really should have
> > a 15A fuse. *That* is dangerous. Don't even get me started on people
> > who put pennies behind the fuses . . .
> >
> My amazement at US 'standards' never ends. In .eu we had screw type
> fuses, however the distribution panel had inserts (that could only be
> installed with a special tool that was (by whichever means) kept from
> being readily available in DIY shops. A 25A fuse would not fit in a 16A
> panel insert.

Well, they were outlawed sometime around the mid 1960s I think, but there
are still a lot of them out there in use. There is a "tamper-proof"
type of replacement fuse that has different thread sizes for each
fuse rating, but those never really caught on. The old standard plug
fuse uses an Edison base (same as US light bulbs). Today you have to
use breakers, and in some cases ground fault and/or arc fault breakers
are required. Of course, old installations are grandfathered in, so
they don't go away until someone remodels or upgrades the electrical
service.

Bill Ranck
Blacksburg, Va.