What will happen if
wires are hooked up backwards to battery (reverse polarity) on small !6 HP
BRIGGS_STRATTON engine. Will it just not start or will something more dang
erous happen? If it does turn, fire & then falter does that mean as far p
olarity goes that things are correct & problem is elsewhere?
On Friday, May 27, 2016 at 2:06:51 PM UTC-4, Retired wrote:
HP BRIGGS_STRATTON engine. Will it just not start or will something more
dangerous happen? If it does turn, fire & then falter does that mean as f
ar polarity goes that things are correct & problem is elsewhere?
And to answer the rest of the question, hooking it up backwards could
probably damage the charging circuit or any other electronics, depending
off course on the actual design.
On Fri, 27 May 2016 11:13:58 -0700 (PDT), trader_4
That is usually the case if it has an alternator style charging
system, that is usually just a couple extra coils in the stator, under
the flywheel. It blows the diodes and may burn out the stator itself.
You can usually get by with a $3 bridge block for the diodes but the
stator is a proprietary part.
(Amazon.com product link shortened)
On Fri, 27 May 2016 15:00:18 -0400, firstname.lastname@example.org wrote:
I'm against doing it backwards, but it's not always a disaster. In
the 100 times I've jumped my car or others, ONCE I got it backwards
for a second or two and the other car wasn't hurt. Don't rely on
this, but don't assume it's been damage either.
There is a big difference between cross connecting 2 batteries and
putting reverse current directly into the diode array.
That is the forward direction for them and all the battery has to
give, goes straight to the stator coil. I am not sure about lawn
mowers but boat manufacturers usually put a fusible link in the diode
array but it is a distinction without a difference because you still
have to replace it.
On Friday, May 27, 2016 at 8:48:25 PM UTC-4, email@example.com wrote:
ll !6 HP BRIGGS_STRATTON engine. Will it just not start or will something
more dangerous happen? If it does turn, fire & then falter does that mean
as far polarity goes that things are correct & problem is elsewhere?
cross connecting 2 batteries can cause both to explode...... its to be avoi
ded at all costs
On Friday, May 27, 2016 at 6:19:42 PM UTC-4, Micky wrote:
Maybe you've had really old cars without computers.
I jumped a coworker's car. I hooked up the cables correctly, then she took a look and said I had them backwards, and switched them. In her defense, the negative wire had red insulation though it was marked negative.
When I touched my battery there was a loud pop and her car went totally dead, and needed an expensive computer chip replacement before it could be started. That pop was instantaneous, no chance to realize we had it wrong.
Yeah, you're right. I apologize..., It was a long time ago. Even
then they threated you that you'd burn out something (I forget what?
It wasn't that the battery would spark and melt. It was about a
semiconuctor. It couldnt' be the diodes since there whole purpose is
to reject backwards current.
Red insulation... That's terrible. Someone should paint it black.
That's a shame. Was she mad at herself.
My friend left me some jumper cables with a light in the middle, t
hat has something to do with not connecting them backwards, though I
haven't looked at it. Does it work? Other than that, they're
cheap cables compared to my 16' heavy duty. But then again I don't
need jumps since I got Priority Start. Maybe other people will.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.