|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
06-29-2012, 07:32 AM | #1 |
Senior Member
Join Date: May 2010
Posts: 330
|
Circuit Breakers for Electrical troubleshooting
Hi All,
Had a fellow PM me on a source for self-resetting circuit breakers that can be snapped into the fuse holder many of us mount on our starters. I use them to do work on the electrical system and to help me chase down ghosts and shorts in the wiring without having to buy a whole package of glass fuses.. No relation to this company, but seem to be a very good vendor and their product has helped me in fixing my own cars and others as well.. here's the link where I bought them.. http://www.rvupgradestore.com/30amp-...-p/56-1107.htm These are 30 amp, but they have them starting at 15 amp and go up to 40. I carry both a 15 and 30, as the 15 is more sensitive, you can use it to isolate smaller shorts without smoking the wires.. As they are thermal and self resetting, if you snap in a 30 amp and go for a drive on a hot day, the engine heat can cause them to shut off untill they cool .. Don't ask me how I know (lol) I initially used them as permanent replacements for fuses, but discovered this thermal sensitivity, so still have them on board, but in my troubleshooting kit - Dave in Boise |
06-29-2012, 07:56 AM | #2 |
Senior Member
Join Date: May 2010
Location: ca.
Posts: 2,522
|
Re: Circuit Breakers for Electrical troubleshooting
i use them all the time with no trouble (permanate) . they are great to let you find the problem .
__________________
V4f |
Sponsored Links (Register now to hide all advertisements) |
|
06-29-2012, 09:39 AM | #3 |
Senior Member
Join Date: Jun 2010
Location: (Old)Shasta (Redding) CA
Posts: 385
|
Re: Circuit Breakers for Electrical troubleshooting
I got mine at the local NAPA store.
JB |
06-29-2012, 11:15 AM | #4 |
Senior Member
Join Date: May 2010
Location: Pine, AZ
Posts: 794
|
Re: Circuit Breakers for Electrical troubleshooting
Good idea for fuse as sometimes hard to find fuse when they blow. The reason they are heat sensitive is that they use a bi-metalic strip between the contacts so when gets too hot due to current flow they open. Same as breakers in your home. A simplier way to find shorts is rig up a 6V or 12V light bulb depending on your battery and put alligator clips on wires attached to the bulb. Connect the bulb across the fuse terminals or from battery to main power wire if no fuse. If light glows there is a current draw. Keep removing things until the light goes out and problem solved.
|
06-29-2012, 12:21 PM | #5 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Circuit Breakers for Electrical troubleshooting
I love you guys for helping me convince folks that a circuit breaker is a Good thing to protect your car's wiring & is a GREAT diagnostic aid when you have a short or an excessive current draw. A 30 Amp was sufficient on my "30 Coupe. Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
06-29-2012, 12:41 PM | #6 |
Senior Member
Join Date: May 2010
Location: Dayton, Ohio
Posts: 236
|
Re: Circuit Breakers for Electrical troubleshooting
Sponsored Links (Register now to hide all advertisements)
__________________
You're born, you die, in between you build hot rods |
06-29-2012, 12:50 PM | #7 |
Senior Member
Join Date: Jun 2010
Location: New Jersey
Posts: 1,471
|
Re: Circuit Breakers for Electrical troubleshooting
Of course this may come across the wrong way and if it does I apologise.
I never use a circuit interrupter such as a circuit breaker or a fuse as a diagnostic tool. Doing so sounds down right dangerous should the device fail. They are designed as a last resort emergency device and in reality should never trip. I have also seen circuit breakers stick on which is why I insist on fuses when possible in my designs. I use a simple ohm meter to troubleshoot any circuit before power is applied to it. In the case I am testing a circuit I use a variable power supply or a variac and slowly apply voltage to the circuit while monitoring current draw. And yes, this is how I work on our "A" as well. |
06-29-2012, 01:13 PM | #8 | |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Circuit Breakers for Electrical troubleshooting
Quote:
The mad inventor at work, very trick! For those that need "hearing" glasses, an old smoke alarm buzzer with alligator clips makes a great continuity tester. It even gets the neighbors out of their "cave!" My vintage transistor radio tells me if I'm losing spark to one cylinder! Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
|
06-29-2012, 03:03 PM | #9 |
Senior Member
|
Re: Circuit Breakers for Electrical troubleshooting
If you want to help a kid out my son is selling them to help fund his restoration but they are $10.00 + 2.50 shipping from him.
__________________
What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II |
06-29-2012, 04:11 PM | #10 |
Senior Member
Join Date: Mar 2012
Location: Southern Nevada
Posts: 149
|
Re: Circuit Breakers for Electrical troubleshooting
My electrical knowledge if on permanent short circuit so does it make any difference if 12 v breakers are used in a 6 v system?
|
06-29-2012, 04:21 PM | #11 |
Senior Member
Join Date: May 2010
Location: Wa.
Posts: 5,409
|
Re: Circuit Breakers for Electrical troubleshooting
We have had all kinds of info on tracing shorts but no one has commented on "longs".
|
06-29-2012, 04:34 PM | #12 |
Senior Member
Join Date: Jun 2010
Location: New Jersey
Posts: 1,471
|
Re: Circuit Breakers for Electrical troubleshooting
|
06-29-2012, 04:38 PM | #13 |
Senior Member
Join Date: May 2010
Location: Wa.
Posts: 5,409
|
Re: Circuit Breakers for Electrical troubleshooting
"Would that be a bad / dirty connection?"
Or no connection. |
06-29-2012, 06:46 PM | #14 |
Senior Member
Join Date: Nov 2011
Location: B.C. Canada
Posts: 1,746
|
Re: Circuit Breakers for Electrical troubleshooting
Breakers are rated in amps,so can be used on 6 or 12V.
|
06-29-2012, 08:36 PM | #15 |
Senior Member
Join Date: Mar 2012
Location: Southern Nevada
Posts: 149
|
Re: Circuit Breakers for Electrical troubleshooting
Thanks columbiA.
|
06-29-2012, 09:50 PM | #16 |
Senior Member
Join Date: May 2010
Posts: 2,599
|
Re: Circuit Breakers for Electrical troubleshooting
|
06-29-2012, 09:57 PM | #17 |
Senior Member
Join Date: May 2010
Location: Wa.
Posts: 5,409
|
Re: Circuit Breakers for Electrical troubleshooting
R om. ur sig qrk 5. rig hr is hm brew.
73 |
06-30-2012, 02:09 PM | #18 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Circuit Breakers for Electrical troubleshooting
Pete,
THE ABOVE????? Is that code for"TWISTED SHORTS??" Chief described electrons as: "Those little men that run in the wires, making electrical things happen. They can only run in one direction, from positive +, to negative -. When they encounter an open, they get "TWISTED SHORTS," 'cause they cain't get across & cain't go back 'cause the Battery Boogie Man will gettum.' This can be found on page 3 of CHIEF'S ELECTRICAL-101. Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
06-30-2012, 02:18 PM | #19 |
Senior Member
Join Date: May 2010
Location: Wa.
Posts: 5,409
|
Re: Circuit Breakers for Electrical troubleshooting
"Pete,
THE ABOVE????? Is that code for"TWISTED SHORTS??"" It's ham radio lingo. |
06-30-2012, 07:35 PM | #20 |
Senior Member
Join Date: Oct 2011
Location: south australia
Posts: 166
|
Re: Circuit Breakers for Electrical troubleshooting
A head light sealed beam is good for chasing shorts. You just connect the beam across the fused connector, without the fuse in place. The light will illuminate when the short is present and off when no short is to be found. Its works well in looking for the intermittent problem.
There are also flying shorts too. (They are not pants to be worn in a plane) Ross |
|
|
Sponsored Links (Register now to hide all advertisements) |
|