| Author |
Message |
Peter A Forbes
Guest
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 Posted:
Sat Apr 09, 2005 12:52 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 9 Apr 2005 13:02:53 +0100, John Woodgate <jmw@jmwa.demon.contraspam.yuk>
wrote:
| Quote: | The IEC 60320 outlet socket and cable-mounting plug are made
specifically for what the OP wants to do, and meet all known safety
requirements. Why search for inferior, maybe dangerous, substitutes?
|
I wasn't, I was just pointing out what is (or was) available.
The ratings for the Neutrik connectors are from their website.
Peter
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Spehro Pefhany
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 9 Apr 2005 13:02:53 +0100, the renowned John Woodgate
<jmw@jmwa.demon.contraspam.yuk> wrote:
| Quote: | I read in sci.electronics.design that Peter A Forbes
diesel@easynet.co.uk> wrote (in
ldff511hlssn3pu6ipqid3a39l3l0lg7vo@4ax.com>) about 'Plug and socket
suggestion needed', on Sat, 9 Apr 2005:
XLR are available with a 240V rated 3-pin or more arrangement:
Electrical Ratings:
Current per contac
t 3 pole, 16 A
4 pole, 10 A
5 pole, 7·5 A
Rated voltage 250 V a.c.
Test voltage 1500 V a.c.
Contact resistance £ 3 mO
Insulation resistance ³ 109O
They are NOT rated as mains connectors DO NOT USE XLRs for mains!
|
Yes, it was more of an amusing (?) suggestion. There are a lot of
wimpy little connectors rated at 300V that should never see anything
more than 24V and even that at limited current.
| Quote: | These are Neutrik (Swiss) but I also seem to recall that Cannon did
make a specific 240V 2 pin plus earth XLR connector and socket, but I
don't see it on the RS catalogue now. We have a couple of bits of old
kit in the workshop fitted with these. The body insert moulding was Red
and the pins were mechanically shielded IIRC.
It (the XLR-LNE) doesn't meet current safety requirements.
The IEC 60320 outlet socket and cable-mounting plug are made
specifically for what the OP wants to do, and meet all known safety
requirements. Why search for inferior, maybe dangerous, substitutes?
|
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com |
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John Woodgate
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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I read in sci.electronics.design that Peter A Forbes
<diesel@easynet.co.uk> wrote (in
<ldff511hlssn3pu6ipqid3a39l3l0lg7vo@4ax.com>) about 'Plug and socket
suggestion needed', on Sat, 9 Apr 2005:
| Quote: | XLR are available with a 240V rated 3-pin or more arrangement:
Electrical Ratings:
Current per contac
t 3 pole, 16 A
4 pole, 10 A
5 pole, 7·5 A
Rated voltage 250 V a.c.
Test voltage 1500 V a.c.
Contact resistance £ 3 mO
Insulation resistance ³ 109O
|
They are NOT rated as mains connectors DO NOT USE XLRs for mains!
| Quote: |
These are Neutrik (Swiss) but I also seem to recall that Cannon did
make a specific 240V 2 pin plus earth XLR connector and socket, but I
don't see it on the RS catalogue now. We have a couple of bits of old
kit in the workshop fitted with these. The body insert moulding was Red
and the pins were mechanically shielded IIRC.
|
It (the XLR-LNE) doesn't meet current safety requirements.
The IEC 60320 outlet socket and cable-mounting plug are made
specifically for what the OP wants to do, and meet all known safety
requirements. Why search for inferior, maybe dangerous, substitutes?
--
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
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John Woodgate
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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I read in sci.electronics.design that Peter A Forbes
<diesel@easynet.co.uk> wrote (in
<ttjf515heej413bud48avb3ngn11j9k9au@4ax.com>) about 'Plug and socket
suggestion needed', on Sat, 9 Apr 2005:
| Quote: | On Sat, 9 Apr 2005 13:02:53 +0100, John Woodgate
jmw@jmwa.demon.contraspam.yuk
wrote:
The IEC 60320 outlet socket and cable-mounting plug are made
specifically for what the OP wants to do, and meet all known safety
requirements. Why search for inferior, maybe dangerous, substitutes?
I wasn't, I was just pointing out what is (or was) available.
|
I didn't mean you, I meant the OP, if he hasn't got tired and gone away.
| Quote: |
The ratings for the Neutrik connectors are from their website.
They are, but you need to understand what they mean, and what they don't |
mean. The clearance and creepage distances for mains connectors have to
take into account that voltage spikes occur, up to 10 times the supply
voltage quite often, and occasionally up to 30 times.
--
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 |
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John Woodgate
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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I read in sci.electronics.design that Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote (in
<i4lf519vk3cb29eltvfe1nsq3j81klr5fd@4ax.com>) about 'Plug and socket
suggestion needed', on Sat, 9 Apr 2005:
| Quote: | There are a lot of wimpy little connectors rated at 300V that should
never see anything more than 24V and even that at limited current.
|
That's why I persuaded IEC to make IEC 61984 a standard, not a report.
It gives safety requirements for connectors not covered by another
specific standard, as, for example, the IEC 60320 connectors are.
--
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 |
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James Meyer
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 9 Apr 2005 13:02:08 +1200, "Ken Taylor" <ken@home.nz> wroth:
| Quote: | "James Meyer" <jmeyer@nowhere.net> wrote in message
news:e04e51tirg613u7hdqoqa7vfr5ohk29b3f@4ax.com...
On Fri, 08 Apr 2005 16:05:32 -0500, Chris W <1qazse4@cox.net> wroth:
to 100 or maybe more conductors. Even the 2 conductor versions are
around $30 for the plug and socket. I was hoping to spend a lot less
money than that. Any suggestions?
RJ-45 sockets are available in panel mount versions and cheaply too. I
doubt plugging an ethernet cable into something with 120 volts applied
would
start a fire.
Jim
So plug 120VAC into your LAN card and see what happens.
Ken
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A couple of surface mounted resistors blew up, but no fire resulted.
Jim |
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James Meyer
Guest
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| Posted:
Sat Apr 09, 2005 3:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 9 Apr 2005 11:10:53 +1000, "John G" <Greentest@ozemail.com.au> wroth:
| Quote: |
"James Meyer" <jmeyer@nowhere.net> wrote in message
news:e04e51tirg613u7hdqoqa7vfr5ohk29b3f@4ax.com...
On Fri, 08 Apr 2005 16:05:32 -0500, Chris W <1qazse4@cox.net> wroth:
to 100 or maybe more conductors. Even the 2 conductor versions are
around $30 for the plug and socket. I was hoping to spend a lot less
money than that. Any suggestions?
RJ-45 sockets are available in panel mount versions and cheaply too.
I
doubt plugging an ethernet cable into something with 120 volts applied
would
start a fire.
Jim
RJ45 style plugs are certianly NOT safe for 120 volt applications.
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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.
Jim |
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Michael
Guest
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| Posted:
Sat Apr 09, 2005 6:10 pm Post subject:
Re: Plug and socket suggestion needed |
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JeffM wrote:
| Quote: |
Keyed AC socket and plug? Pins on the plug I'm talking about are...
slightly curved, and laid out in a circular pattern.
Can't remember what they're called. Plug in and twist. Locked!
A bonus is that the socket is so wierd...
Michael
Same thing I thought of
(because I used one for a switch on a break-it-down-easily system).
http://www.hubbellnet.com/max_htm/tech_stuff/NEMA/ml_2p.htm
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Yup. The Twist-Lock is what I was thinking of. |
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John Woodgate
Guest
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| Posted:
Sat Apr 09, 2005 6:10 pm Post subject:
Re: Plug and socket suggestion needed |
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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:
'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 |
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Rich Grise
Guest
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| Posted:
Sat Apr 09, 2005 9:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Fri, 08 Apr 2005 23:45:38 -0500, Chris W wrote:
| Quote: | Let me see if I can explain it better. The control box has a time delay
relay that stooped working a few weeks ago. While I was getting that
replaced, I wired a SPST switch in parallel with the relay contact and
did the time delay manually, so I could still use the system till the
relay was replaced. Now I want to remove that switch but still keep it
around so if the relay goes bad again I can just plug it in and go. The
switch has to be on the end of about a 6 foot cable to make the system
usable. So I want to cut the wire at the box put a socket in the box and
a plug on the wire with the switch.
|
I don't know why my newsreader isn't threading these things right, but
a couple posts back (or maybe in a different thread if you've posted
the same question twice), I suggested Jones connectors. About two
bucks, and there's not a chance of plugging anything else into them:
http://www.mouser.com/catalog/621/871.pdf
Have Fun!
Rich |
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Rich Grise
Guest
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| Posted:
Sat Apr 09, 2005 9:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Fri, 08 Apr 2005 16:05:32 -0500, Chris W wrote:
| Quote: | I have a control box with a 2 wire cable going out to a SPST switch that
switches 120V AC line. I want to put a socket on in the box and a plug on
the wire with the switch so I can disconnect it when it isn't needed. The
easiest thing I can think of would be to use a standard 2 prong outlet
and plug. The problem with that is, someone might find the cable with the
switch and plug on the end, wonder what it does, plug it in and flip the
switch. Best case, they trip a breaker, worst case something starts on
fire. So I don't like that idea. I have been searching Mouser and
Digikey and the only other panel mount socket and matching plug I have
found are the round ones that have from two on up to 100 or maybe more
conductors. Even the 2 conductor versions are around $30 for the plug and
socket. I was hoping to spend a lot less money than that. Any
suggestions?
|
Jones Connectors.
http://www.google.com/search?&q=%22jones+connectors%22
First hit:
http://www.action-electronics.com/cinch.htm
Have Fun!
Rich |
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Rich Grise
Guest
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| Posted:
Sat Apr 09, 2005 9:10 pm Post subject:
Re: Plug and socket suggestion needed |
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On Sat, 09 Apr 2005 13:02:08 +1200, Ken Taylor wrote:
| Quote: | "James Meyer" <jmeyer@nowhere.net> wrote in message
On Fri, 08 Apr 2005 16:05:32 -0500, Chris W <1qazse4@cox.net> wroth:
to 100 or maybe more conductors. Even the 2 conductor versions are
around $30 for the plug and socket. I was hoping to spend a lot less
money than that. Any suggestions?
RJ-45 sockets are available in panel mount versions and cheaply too. I
doubt plugging an ethernet cable into something with 120 volts applied
would
start a fire.
So plug 120VAC into your LAN card and see what happens.
Why do you have 120 VAC at the RJ-45 plug? |
Thanks,
Rich |
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John G
Guest
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| Posted:
Sun Apr 10, 2005 12:10 am Post subject:
Re: Plug and socket suggestion needed |
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"John Woodgate" <jmw@jmwa.demon.contraspam.yuk> wrote in message
news:OCg3oMFaj$VCFwKM@jmwa.demon.co.uk...
| Quote: | 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.
--
John G
Wot's Your Real Problem? |
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James Meyer
Guest
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| Posted:
Sun Apr 10, 2005 6:10 am Post subject:
Re: Plug and socket suggestion needed |
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On Sun, 10 Apr 2005 09:47:33 +1000, "John G" <Greentest@ozemail.com.au> wroth:
| Quote: |
"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.
Jim |
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Eric Inazaki
Guest
|
| Posted:
Sun Apr 10, 2005 6:10 am Post subject:
Re: Plug and socket suggestion needed |
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In article <m16h51p77pkd7emrj4rtsurmrc4vgq2h9l@4ax.com>,
James Meyer <jmeyer@nowhere.net> wrote:
| Quote: | 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.
Jim
|
Well, here's the original post:
| Quote: | I have a control box with a 2 wire cable going out to a SPST switch that
switches 120V AC line. I want to put a socket on in the box and a plug
on the wire with the switch so I can disconnect it when it isn't
needed. The easiest thing I can think of would be to use a standard 2
prong outlet and plug. The problem with that is, someone might find the
cable with the switch and plug on the end, wonder what it does, plug it
in and flip the switch. Best case, they trip a breaker, worst case
something starts on fire. So I don't like that idea. I have been
searching Mouser and Digikey and the only other panel mount socket and
matching plug I have found are the round ones that have from two on up
to 100 or maybe more conductors. Even the 2 conductor versions are
around $30 for the plug and socket. I was hoping to spend a lot less
money than that. Any suggestions?
|
I don't see any reference to "current limited". The cable/switch
contraption sounds like it's supposed to back up a set of relay
contacts that, for all I (or you) know, will be switching mains
power.
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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