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Message |
R.Lewis
Guest
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 Posted:
Sun Apr 10, 2005 12:10 pm Post subject:
Re: Plug and socket suggestion needed |
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"James Meyer" <jmeyer@nowhere.net> wrote in message
news:m16h51p77pkd7emrj4rtsurmrc4vgq2h9l@4ax.com...
| Quote: | On Sun, 10 Apr 2005 09:47:33 +1000, "John G" <Greentest@ozemail.com.au
wroth:
"John Woodgate" <jmw@jmwa.demon.contraspam.yuk> wrote in message
news:OCg3oMFaj$VCFwKM@jmwa.demon.co.uk...
I read in sci.electronics.design that James Meyer <jmeyer@nowhere.net
wrote (in <47pf51589298v4nekh1q8ondh06cnpn0ka@4ax.com>) about 'Plug and
socket suggestion needed', on Sat, 9 Apr 2005:
Oh really? Take a look at:
https://www.usa-assmann.com/shop/item.asp?itemid=602&catid=118
Current rating 1.5 Amps, voltage rating 125 VRMS AC.
'Rated' at 125 V and 'safe on 120 V mains' are not the same thing. 120
V mains gets voltage spikes of at least 1 kV on it and the clearance
and creepage distances have to take that into account.
--
Regards, John Woodgate, OOO - Own Opinions Only.
There are two sides to every question, except
'What is a Moebius strip?'
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
Thanks John,
Thats what I wanted to say too.
And Is cat5 cable rated for mains use? NO.
The original question was for a cheap connector solution for a one-off
application where current limited 120 Volts AC was being switched. Not
for
something that could be plugged directly into the "mains".
The RJ-45 connector is rated for 125 Volts and category 5 cable is rated
for 300 Volts. The combination is cheap and will meet the original
poster's
requirements.
Stick *that* up your mains.
Odd. |
You state the rating of the cable and the connector which shows conclusively
that they will not do the job Then you state they will.
Any reason why?
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James Meyer
Guest
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| Posted:
Sun Apr 10, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 09 Apr 2005 22:50:02 -0500, Eric Inazaki
<eric@deadbeat.wustl.edu.invalid> wroth:
| Quote: |
Safety issues aside, RJ45 jacks are generally pc mount affairs.
I don't know how the OP has his parts wired together, though I
suspect it'd be a pain in the ass to panel mount an RJ45 jack.
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There are plenty of panel mounted RJ-45 connectors available. A typical
office setting has them on the wall. No PC board required. The wires come
right off the back of the receptical. Most of them use IDC type connections so
even soldering is eliminated.
Jim |
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James Meyer
Guest
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| Posted:
Sun Apr 10, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sun, 10 Apr 2005 12:42:45 +0100, "R.Lewis" <h.lewis@connect-2.co.uk> wroth:
| Quote: | Odd.
You state the rating of the cable and the connector which shows conclusively
that they will not do the job Then you state they will.
Any reason why?
|
I'll be willing to bet dollars to donuts that the ratings of the
connector/cable combination I specified at least equals the rating of the switch
used at the end of the cable.
Failure of the cable/connector part, however likely or unlikely, is
exactly equivalent to either opening or closing the switch. Why analy
overdesign any single part of a series connected system without overdesigning
*all* of the parts?
Jim
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R.Lewis
Guest
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| Posted:
Sun Apr 10, 2005 6:10 pm Post subject:
Re: Plug and socket suggestion needed |
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"James Meyer" <jmeyer@nowhere.net> wrote in message
news:50fi511el844246fbbg9alarkhohl86nl2@4ax.com...
| Quote: | On Sun, 10 Apr 2005 12:42:45 +0100, "R.Lewis" <h.lewis@connect-2.co.uk
wroth:
Odd.
You state the rating of the cable and the connector which shows
conclusively
that they will not do the job Then you state they will.
Any reason why?
I'll be willing to bet dollars to donuts that the ratings of the
connector/cable combination I specified at least equals the rating of the
switch
used at the end of the cable.
Failure of the cable/connector part, however likely or unlikely, is
exactly equivalent to either opening or closing the switch. Why analy
overdesign any single part of a series connected system without
overdesigning
*all* of the parts?
Jim
That just about sums it up. |
If you don't know what you are doing with one thing - best make sure you
know nothing about the lot.
Saves you from worrying I suppose. |
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Chris W
Guest
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| Posted:
Mon Apr 11, 2005 9:10 am Post subject:
Re: Plug and socket suggestion needed |
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James Meyer wrote:
| Quote: | On Sun, 10 Apr 2005 12:42:45 +0100, "R.Lewis" <h.lewis@connect-2.co.uk> wroth:
Odd.
You state the rating of the cable and the connector which shows conclusively
that they will not do the job Then you state they will.
Any reason why?
I'll be willing to bet dollars to donuts that the ratings of the
connector/cable combination I specified at least equals the rating of the switch
used at the end of the cable.
Failure of the cable/connector part, however likely or unlikely, is
exactly equivalent to either opening or closing the switch. Why analy
overdesign any single part of a series connected system without overdesigning
*all* of the parts?
Jim
Being the OP I thought I would interject here. The switch at the other |
end of the cable is rated at 10A 125VAC and something else at 250VAC.
When turned on the switch will deliver 120VAC mains line to a solenoid
valve on a 1/2 HP hydraulic power unit. And as another poster suggested
this switch is back up for a relay, which is why I want to be able to
unplug it. Thanks for the many suggestions. Most I couldn't find at a
price I wanted to to pay. I will probably go with a Mouser P/N
161-R30200 and 161-R331. I would have preferred the similar connectors
that had the prongs perpendicular to what those have since that is more
unlike anything else that plugs into the wall. The "old style"
connectors that someone suggested are way too crude looking for my
tastes. As for the RJ45 connector, it has several problems, other than
not handling mains like some say, the cable won't hold up very well on
the end of a control box, and having the RJ45 jack in my control box
might lead someone to think that the thing is network enabled and try to
hook it up to the network.
--
Chris W
Gift Giving Made Easy
Get the gifts you want &
give the gifts they want
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