Today's Message Index:
----------------------
1. 07:51 AM - Re: Grounding architecture (Eric M. Jones)
2. 08:11 AM - Re: Re: Grounding architecture (Charlie England)
3. 08:50 AM - Re: Re: Grounding architecture (Ken Ryan)
4. 12:09 PM - Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (William Hunter)
5. 12:22 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (Alec Myers)
6. 12:28 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (Robert L. Nuckolls, III)
7. 01:07 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (William Hunter)
8. 01:30 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (Charlie England)
9. 04:48 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalen (user9253)
10. 04:52 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (William Hunter)
11. 05:00 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (William Hunter)
12. 05:26 PM - 220 VAC Circuit Breaker Question (William Hunter)
13. 07:24 PM - Re: 220 VAC Circuit Breaker Question (user9253)
14. 07:38 PM - Re: 220 VAC Circuit Breaker Question (Charles Plumery)
15. 08:28 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (Robert L. Nuckolls, III)
16. 08:29 PM - Re: Can You PLEASE help Me Find a CHINT NP4 Switch (or equivalent) (Robert L. Nuckolls, III)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Grounding architecture |
Years ago Bob N. put togther a little collection called the "Economics of Weight
Reduction", in which he had a piece I had written. It is still on the Aeroelectric
Connection, but I attach it here. Good reading.
I too, wonder about using the aluminum skin for a ground conductor...Not that it
doesn't work in most cases (it does work), but as the structure ages, and in
some special cases, it gives me pause. The rivets could grow weak any you wouldn't
even know it.
My guess is that steel airframes are best not used as ground due to magnetization.
Also to be sure, Aluminum is a far better conductor than copper per weight. I also
include my piece on the subject.
I sell a lot of Copper Clad Aluminum cable to people who are extremely careful
with weight. Drones, NASCAR, EAA aircraft, NASA,Aerovironment, TOP FUEL DRAGSTERS!,
Searey, many others. There has never been a problem history with CCA.
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481895#481895
Attachments:
http://forums.matronics.com//files/copper_cables_607.pdf
http://forums.matronics.com//files/economics_of_weight_reduction_139.pdf
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Grounding architecture |
On 7/28/2018 9:50 AM, Eric M. Jones wrote:
>
> Years ago Bob N. put togther a little collection called the "Economics of Weight
Reduction", in which he had a piece I had written. It is still on the Aeroelectric
Connection, but I attach it here. Good reading.
>
> I too, wonder about using the aluminum skin for a ground conductor...Not that
it doesn't work in most cases (it does work), but as the structure ages, and
in some special cases, it gives me pause. The rivets could grow weak any you wouldn't
even know it.
>
> My guess is that steel airframes are best not used as ground due to magnetization.
>
> Also to be sure, Aluminum is a far better conductor than copper per weight. I
also include my piece on the subject.
>
> I sell a lot of Copper Clad Aluminum cable to people who are extremely careful
with weight. Drones, NASCAR, EAA aircraft, NASA,Aerovironment, TOP FUEL DRAGSTERS!,
Searey, many others. There has never been a problem history with CCA.
>
> --------
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge, MA 01550
> (508) 764-2072
> emjones(at)charter.net
>
The obvious solution to the unlikely resistance growth issue would be to
use a longeron. Obviously won't apply to every a/c design, but the RVs
have a continuous longeron from firewall to tail. Tying to a longeron
(1/8 thick x 3/4 x 3/4 inches) would give an unbroken path.
Charlie
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Grounding architecture |
Eric, is the copper clad aluminum cable as stiff as copper of the same
gauge?
On Sat, Jul 28, 2018 at 6:55 AM Eric M. Jones <emjones@charter.net> wrote:
> emjones@charter.net>
>
> Years ago Bob N. put togther a little collection called the "Economics of
> Weight Reduction", in which he had a piece I had written. It is still on
> the Aeroelectric Connection, but I attach it here. Good reading.
>
> I too, wonder about using the aluminum skin for a ground conductor...Not
> that it doesn't work in most cases (it does work), but as the structure
> ages, and in some special cases, it gives me pause. The rivets could grow
> weak any you wouldn't even know it.
>
> My guess is that steel airframes are best not used as ground due to
> magnetization.
>
> Also to be sure, Aluminum is a far better conductor than copper per
> weight. I also include my piece on the subject.
>
> I sell a lot of Copper Clad Aluminum cable to people who are extremely
> careful with weight. Drones, NASCAR, EAA aircraft, NASA,Aerovironment, TOP
> FUEL DRAGSTERS!, Searey, many others. There has never been a problem
> history with CCA.
>
> --------
> Eric M. Jones
> www.PerihelionDesign.com
> 113 Brentwood Drive
> Southbridge, MA 01550
> (508) 764-2072
> emjones(at)charter.net
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=481895#481895
>
>
> Attachments:
>
> http://forums.matronics.com//files/copper_cables_607.pdf
> http://forums.matronics.com//files/economics_of_weight_reduction_139.pdf
>
>
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Can You PLEASE help Me Find a CHINT NP4 Switch (or |
equivalent)
Sorry for the slightly off topic post (however this is for a machine
installed inside my airplane hangar).
I am looking for a pushbutton switch to replace the broken one on my
hydraulic lift.
It's a push button momentary contact on single pole single throw switch.
The diameter of the hole in the panel is 0.894 inches / 22.72 MM.
The switch that broke is labeled CHNT NP4 and it has other numbers on it
such as GB140 48.5 and it's a 10 amp switch.
It is a switch that you push and hold in the button and then a relay closes
to energize the electric motor that moves the hydraulic pump.
Again, sorry about the off-topic post however I've spent 30 minutes on the
Google with no success but I'm sure there's a guy on this forum that will
recognize this switch immediately and know exactly where to find one (or
one that will work).
Thanks!!!
Bill Hunter
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
https://www.google.ca/search?q=chint+np4+switch
There are about a million options...
On Jul 28, 2018, at 20:08, William Hunter <billhuntersemail@gmail.com> wrote
:
Sorry for the slightly off topic post (however this is for a machine install
ed inside my airplane hangar).
I am looking for a pushbutton switch to replace the broken one on my hydraul
ic lift.
It's a push button momentary contact on single pole single throw switch. Th
e diameter of the hole in the panel is 0.894 inches / 22.72 MM.
The switch that broke is labeled CHNT NP4 and it has other numbers on it suc
h as GB140 48.5 and it's a 10 amp switch.
It is a switch that you push and hold in the button and then a relay closes t
o energize the electric motor that moves the hydraulic pump.
Again, sorry about the off-topic post however I've spent 30 minutes on the G
oogle with no success but I'm sure there's a guy on this forum that will re
cognize this switch immediately and know exactly where to find one (or one t
hat will work).
Thanks!!!
Bill Hunter
<Screenshot_2018-07-28-11-54-56~2.png>
Message 6
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
At 02:08 PM 7/28/2018, you wrote:
>Sorry for the slightly off topic post (however
>this is for a machine installed inside my airplane hangar).
>
>I am looking for a pushbutton switch to replace
>the broken one on my hydraulic lift.=C2
>
>It's a push button momentary contact on single
>pole single throw switch.=C2 The diameter of the
>hole in the panel is 0.894 inches / 22.72 MM.=C2
>
>The switch that broke is labeled CHNT NP4 and it
>has other numbers on it such as GB140 48.5 and it's a 10 amp switch.=C2 =C2
>
>It is a switch that you push and hold in the
>button and then a relay closes to energize the
>electric motor that moves the hydraulic pump.
>
>Again, sorry about the off-topic post however
>I've spent 30 minutes on the Google=C2 with no
>success but I'm sure there's a guy on this forum
>that will recognize this switch immediately and
>know exactly where to find one (or one that will work).
>
>Thanks!!!=C2
>
>Bill Hunter
There is nothing electrically special about this
switch other than the fact that it's normally open.
You probably want to get the door operable ASAP
so go to a hardware store and get ANY normally open
P.B. Here's one example at Lowes.
https://goo.gl/66gez5
Wire it into place temporarily . . . mgiht even let it
dangle on the wires wrapped with tape to keep the
electrons from tunning onto the floor.
Then order one of these:
https://goo.gl/pTKXPT
It will directly replace the switch that's broken
and will be delivered to your door in a few days
for free.
Bob . . .
Message 7
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
That is the one Bob... less than 5 bucks (delivered) is KAZACKLY what I
needed.
Thanks Again!!!!
Bill Hunter
On Sat, Jul 28, 2018, 12:32 Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 02:08 PM 7/28/2018, you wrote:
>
> Sorry for the slightly off topic post (however this is for a machine
> installed inside my airplane hangar).
>
> I am looking for a pushbutton switch to replace the broken one on my
> hydraulic lift.=C3=82
>
> It's a push button momentary contact on single pole single throw switch.
=C3=82
> The diameter of the hole in the panel is 0.894 inches / 22.72 MM.=C3=82
>
> The switch that broke is labeled CHNT NP4 and it has other numbers on it
> such as GB140 48.5 and it's a 10 amp switch.=C3=82 =C3=82
>
> It is a switch that you push and hold in the button and then a relay
> closes to energize the electric motor that moves the hydraulic pump.
>
> Again, sorry about the off-topic post however I've spent 30 minutes on th
e
> Google=C3=82 with no success but I'm sure there's a guy on this forum th
at will
> recognize this switch immediately and know exactly where to find one (or
> one that will work).
>
> Thanks!!!=C3=82
>
> Bill Hunter
>
>
> There is nothing electrically special about this
> switch other than the fact that it's normally open.
>
> You probably want to get the door operable ASAP
> so go to a hardware store and get ANY normally open
> P.B. Here's one example at Lowes.
>
> https://goo.gl/66gez5
>
> Wire it into place temporarily . . . mgiht even let it
> dangle on the wires wrapped with tape to keep the
> electrons from tunning onto the floor.
>
> Then order one of these:
>
>
> https://goo.gl/pTKXPT
>
>
> It will directly replace the switch that's broken
> and will be delivered to your door in a few days
> for free.
>
> Bob . . .
>
Message 8
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
On 7/28/2018 2:28 PM, Robert L. Nuckolls, III wrote:
> At 02:08 PM 7/28/2018, you wrote:
>> Sorry for the slightly off topic post (however this is for a machine
>> installed inside my airplane hangar).
>>
>> I am looking for a pushbutton switch to replace the broken one on my
>> hydraulic lift.
>>
>> It's a push button momentary contact on single pole single throw
>> switch. The diameter of the hole in the panel is 0.894 inches /
>> 22.72 MM.
>>
>> The switch that broke is labeled CHNT NP4 and it has other numbers on
>> it such as GB140 48.5 and it's a 10 amp switch.
>>
>> It is a switch that you push and hold in the button and then a relay
>> closes to energize the electric motor that moves the hydraulic pump.
>>
>> Again, sorry about the off-topic post however I've spent 30 minutes
>> on the Google with no success but I'm sure there's a guy on this
>> forum that will recognize this switch immediately and know exactly
>> where to find one (or one that will work).
>>
>> Thanks!!!
>>
>> Bill Hunter
>
>
> There is nothing electrically special about this
> switch other than the fact that it's normally open.
>
> You probably want to get the door operable ASAP
> so go to a hardware store and get ANY normally open
> P.B. Here's one example at Lowes.
>
> https://goo.gl/66gez5
>
> Wire it into place temporarily . . . mgiht even let it
> dangle on the wires wrapped with tape to keep the
> electrons from tunning onto the floor.
>
> Then order one of these:
>
>
> https://goo.gl/pTKXPT
>
>
> It will directly replace the switch that's broken
> and will be delivered to your door in a few days
> for free.
>
> Bob . . .
>
Hi Bob,
You might want to recheck that ebay link. When I click it, I get an
emergency stop switch. The industrial E-stop switches I've worked with
latch down, opening the safety interlock line and closing a pair of
contacts used for monitoring the safety loop. They must be either pulled
or rotated back to 'normal' position. The one pictured has circular
arrows on the button, which indicates that it latches down and must be
rotated to release. The text at the bottom of the listing says that,
too. If he's replacing a momentary PB, things could get interesting if
he doesn't notice how to release the button.
Charlie
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
Message 9
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalen
A search for Chint NP4 gave these:
https://www.aliexpress.com/item/CHINT-Button-Switch-Since-Reset-NP4-11BN-Flat-Button-Switch-Reset-Switch-Button-Normally-Open-Often/32828826215.html
http://www.usbreaker.com/products/products.php
https://www.alliedelec.com/view/search/?category=3|2510419/2737097/2737107&isredirect=1&keyword=switches&n8520=10%20A,15%20A,16%20A,12%20A,13%20A,10.5%20A,20%20A&n8461=Round,Round%2030mm,Round%20Flush,Round%20Recessed&pg=1&mpp &sort=price_retailasc
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481907#481907
Message 10
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
Thanks Charlie for the heads up! I emailed the seller to confirm what kind
of switch it was
Thanks,
Bill Hunter
On Sat, Jul 28, 2018, 13:34 Charlie England <ceengland7@gmail.com> wrote:
> On 7/28/2018 2:28 PM, Robert L. Nuckolls, III wrote:
>
> At 02:08 PM 7/28/2018, you wrote:
>
> Sorry for the slightly off topic post (however this is for a machine
> installed inside my airplane hangar).
>
> I am looking for a pushbutton switch to replace the broken one on my
> hydraulic lift.=C3=82
>
> It's a push button momentary contact on single pole single throw switch.
=C3=82
> The diameter of the hole in the panel is 0.894 inches / 22.72 MM.=C3=82
>
> The switch that broke is labeled CHNT NP4 and it has other numbers on it
> such as GB140 48.5 and it's a 10 amp switch.=C3=82 =C3=82
>
> It is a switch that you push and hold in the button and then a relay
> closes to energize the electric motor that moves the hydraulic pump.
>
> Again, sorry about the off-topic post however I've spent 30 minutes on th
e
> Google=C3=82 with no success but I'm sure there's a guy on this forum th
at will
> recognize this switch immediately and know exactly where to find one (or
> one that will work).
>
> Thanks!!!=C3=82
>
> Bill Hunter
>
>
> There is nothing electrically special about this
> switch other than the fact that it's normally open.
>
> You probably want to get the door operable ASAP
> so go to a hardware store and get ANY normally open
> P.B. Here's one example at Lowes.
>
> https://goo.gl/66gez5
>
> Wire it into place temporarily . . . mgiht even let it
> dangle on the wires wrapped with tape to keep the
> electrons from tunning onto the floor.
>
> Then order one of these:
>
>
> https://goo.gl/pTKXPT
>
>
> It will directly replace the switch that's broken
> and will be delivered to your door in a few days
> for free.
>
> Bob . . .
>
> Hi Bob,
>
> You might want to recheck that ebay link. When I click it, I get an
> emergency stop switch. The industrial E-stop switches I've worked with
> latch down, opening the safety interlock line and closing a pair of
> contacts used for monitoring the safety loop. They must be either pulled
or
> rotated back to 'normal' position. The one pictured has circular arrows o
n
> the button, which indicates that it latches down and must be rotated to
> release. The text at the bottom of the listing says that, too. If he's
> replacing a momentary PB, things could get interesting if he doesn't noti
ce
> how to release the button.
>
> Charlie
>
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient&utm_term=icon> Virus-free
.
> www.avast.com
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm
_campaign=sig-email&utm_content=emailclient&utm_term=link>
> <#m_-6760267267783769634_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
>
Message 11
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
The same seller on eBay had the switch I needed so I will swap the
emergency stop switch for this one
https://m.ebay.com/itm/NEW-TWO-2-Push-Button-Switch-Momentary-Press-Switch-
Heavy-Duty/170614528296?hash=item27b96b1928%3Ag%3AOUQAAOxyjzNRF4x~&_pgn
=1&rt=nc
Thanks again for all your help!
Thanks,
Bill Hunter
On Sat, Jul 28, 2018, 12:32 Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 02:08 PM 7/28/2018, you wrote:
>
> Sorry for the slightly off topic post (however this is for a machine
> installed inside my airplane hangar).
>
> I am looking for a pushbutton switch to replace the broken one on my
> hydraulic lift.=C3=82
>
> It's a push button momentary contact on single pole single throw switch.
=C3=82
> The diameter of the hole in the panel is 0.894 inches / 22.72 MM.=C3=82
>
> The switch that broke is labeled CHNT NP4 and it has other numbers on it
> such as GB140 48.5 and it's a 10 amp switch.=C3=82 =C3=82
>
> It is a switch that you push and hold in the button and then a relay
> closes to energize the electric motor that moves the hydraulic pump.
>
> Again, sorry about the off-topic post however I've spent 30 minutes on th
e
> Google=C3=82 with no success but I'm sure there's a guy on this forum th
at will
> recognize this switch immediately and know exactly where to find one (or
> one that will work).
>
> Thanks!!!=C3=82
>
> Bill Hunter
>
>
> There is nothing electrically special about this
> switch other than the fact that it's normally open.
>
> You probably want to get the door operable ASAP
> so go to a hardware store and get ANY normally open
> P.B. Here's one example at Lowes.
>
> https://goo.gl/66gez5
>
> Wire it into place temporarily . . . mgiht even let it
> dangle on the wires wrapped with tape to keep the
> electrons from tunning onto the floor.
>
> Then order one of these:
>
>
> https://goo.gl/pTKXPT
>
>
> It will directly replace the switch that's broken
> and will be delivered to your door in a few days
> for free.
>
> Bob . . .
>
Message 12
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | 220 VAC Circuit Breaker Question |
Greetings,
If you all would be so kind as to entertain another slightly off topic
electrical question.
In my hangar I just installed an evaporative cooler and it is powered by a
newly purchased 20 amp 220 volt circuit breaker.
Due to an internal problem in the toggle switch out at the unit there was a
direct short because when I closed the 20 amp circuit breaker(s) about 3
seconds later the entire power to the hanger was shut off because the 60
amp feed circuit breaker out at the house opened.
This was kind of surprising because I assume that if there was a short out
at the evaporative cooler unit then the new 20 amp circuit breaker that
I've installed for that circuit would have opened before the main 60 amp
circuit breaker that feeds the entire hanger would open.
I removed the toggle switch at the unit and directly wired the 220 volt
wires to the unit wires and it's working perfectly (so I have a discussion
with Mastercool about getting a replacement toggle switch) but regardless I
have concluded that the wires out to the unit are fine and the unit motor
is working fine so my only concern at this point is why would the 20 amp
circuit breaker not open and why would it stay closed long enough to
require the main feed 60 amp circuit breaker to open?
I have another 20 amp circuit breaker that I could install in circuit
however I figured I would ask the collective what their thoughts were first
.
And BTW... the evaporative cooler is taking 100 degree outside Arizona air
and making it 80=C2=B0 as it enters the hanger however a 3000 square foot s
teel
building without insulation in the Arizona Sun is a bit hard to cool. Any
suggestions on hanger insulation?
Thanks,
Bill Hunter
On Sat, Jul 28, 2018, 12:32 Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 02:08 PM 7/28/2018, you wrote:
>
> Sorry for the slightly off topic post (however this is for a machine
> installed inside my airplane hangar).
>
> I am looking for a pushbutton switch to replace the broken one on my
> hydraulic lift.=C3=82
>
> It's a push button momentary contact on single pole single throw switch.
=C3=82
> The diameter of the hole in the panel is 0.894 inches / 22.72 MM.=C3=82
>
> The switch that broke is labeled CHNT NP4 and it has other numbers on it
> such as GB140 48.5 and it's a 10 amp switch.=C3=82 =C3=82
>
> It is a switch that you push and hold in the button and then a relay
> closes to energize the electric motor that moves the hydraulic pump.
>
> Again, sorry about the off-topic post however I've spent 30 minutes on th
e
> Google=C3=82 with no success but I'm sure there's a guy on this forum th
at will
> recognize this switch immediately and know exactly where to find one (or
> one that will work).
>
> Thanks!!!=C3=82
>
> Bill Hunter
>
>
> There is nothing electrically special about this
> switch other than the fact that it's normally open.
>
> You probably want to get the door operable ASAP
> so go to a hardware store and get ANY normally open
> P.B. Here's one example at Lowes.
>
> https://goo.gl/66gez5
>
> Wire it into place temporarily . . . mgiht even let it
> dangle on the wires wrapped with tape to keep the
> electrons from tunning onto the floor.
>
> Then order one of these:
>
>
> https://goo.gl/pTKXPT
>
>
> It will directly replace the switch that's broken
> and will be delivered to your door in a few days
> for free.
>
> Bob . . .
>
Message 13
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 220 VAC Circuit Breaker Question |
When two circuit breakers (or fuses) are in series, either one or both could trip
(or blow) when there is a short circuit. A friend told me that he was working
on an electric range outlet without shutting off the power. He stuck his
screwdriver where it shouldn't be and shorted out the circuit. The main breaker
for the whole apartment building tripped. He had to get the manager to unlock
the utility room to reset the main breaker. I do not know if the 40 amp range
breaker tripped or not.
The above scenario might be one reason why aircraft main bus feeders are not
normally fused. I know that the major reason given for not fusing the feeder
is that it is not needed. Another reason is that if it is not installed, then
it can not blow.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481911#481911
Message 14
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: 220 VAC Circuit Breaker Question |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Message 15
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
>
>You might want to recheck that ebay link. When I click it, I get an
>emergency stop switch. The industrial E-stop switches I've worked
>with latch down, opening the safety interlock line and closing a
>pair of contacts used for monitoring the safety loop. They must be
>either pulled or rotated back to 'normal' position. The one pictured
>has circular arrows on the button, which indicates that it latches
>down and must be rotated to release. The text at the bottom of the
>listing says that, too. If he's replacing a momentary PB, things
>could get interesting if he doesn't notice how to release the button.
>
>Charlie
Good catch Charlie. I missed that. Perhaps this
is a bettery options
https://goo.gl/R5rAdN
Bob . . .
Message 16
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Can You PLEASE help Me Find a CHINT NP4 Switch |
(or equivalent)
At 06:59 PM 7/28/2018, you wrote:
>The same seller on eBay had the switch I needed so I will swap the
>emergency stop switch for this one
>
><https://m.ebay.com/itm/NEW-TWO-2-Push-Button-Switch-Momentary-Press-Switch-Heavy-Duty/170614528296?hash=item27b96b1928%3Ag%3AOUQAAOxyjzNRF4x~&_pgn=1&rt=nc>https://m.ebay.com/itm/NEW-TWO-2-Push-Button-Switch-Momentary-Press-Switch-Heavy-Duty/170614528296?hash=item27b96b1928%3Ag%3AOUQAAOxyjzNRF4x~&_pgn=1&rt=nc
>
>Thanks again for all your help!
>
>Thanks,
>
>Bill Hunter
Sounds like you guys got it under control . . .
that's how this List rolls!
Bob . . .
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|