Subject: [Shop-talk] keeping the smoke in----fuse selection for a circuit

From: john niolon via Shop-talk <[email-masked]>
Date: Tue, 5 Nov 2019 16:44:06 -0600

This is a multi-part message in MIME format.

--===============8838621861171050926==
	boundary="----=_NextPart_000_09B7_01D593F8.3D476800"

This is a multi-part message in MIME format.

------=_NextPart_000_09B7_01D593F8.3D476800
	charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

I=E2=80=99m wiring for my power seats in my truck project. My wiring =
harness didn't include this circuit so I'm coming off a battery =
termination point. Thinking about fusing each seat. The internal wiring =
is 14 ga and doing a amp check I read from 3-6 amps with any of the 3 =
motors (tilt/raise/for-back) running and around 12 amps when you hit the =
stops and the motor stalls. I know 14 ga is good for 18-20 amps but I'm =
trying to decide how much to fuse it.. I wanna keep the smoke inside but =
don't want to fuse too high.... would you consider a percentage over =
stall amp draw or running amp draw..... and what safety factor ??  I =
should already know this at my age...

john

https://jniolon.classicpickup.com/
------=_NextPart_000_09B7_01D593F8.3D476800
	charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000"><SPAN=20
style=3D"FONT-FAMILY: ; WHITE-SPACE: normal; WORD-SPACING: 0px; =
TEXT-TRANSFORM: none; FLOAT: none; COLOR: ; ORPHANS: 2; WIDOWS: 2; =
DISPLAY: inline !important; LETTER-SPACING: normal; TEXT-INDENT: 0px; =
font-variant-ligatures: normal; font-variant-caps: normal; =
-webkit-text-stroke-width: 0px; text-decoration-style: initial; =
text-decoration-color: initial"><FONT=20
face=3DVerdana><FONT color=3D#222222>I=E2=80=99m wiring for my power =
seats in my truck=20
project. My wiring harness didn't include this circuit so I'm coming off =
a=20
battery termination point. Thinking about fusing each seat. The internal =
wiring=20
is 14 ga and doing a amp check I read from 3-6 amps with any of the 3 =
motors=20
(tilt/raise/for-back) running and around 12 amps when you hit the stops =
and the=20
motor stalls. I know 14 ga is good for 18-20 amps but I'm trying to =
decide how=20
much to fuse it.. I wanna keep the smoke inside but don't want to fuse =
too=20
high.... would you consider a percentage over stall amp draw or running =
amp=20
draw..... and what safety factor ??&nbsp; I should already know this at =
my=20
age...</FONT></FONT></SPAN><BR=20
style=3D'BOX-SIZING: border-box; FONT-SIZE: 13px; FONT-FAMILY: verdana, =
geneva, lucida, "lucida grande", arial, helvetica, sans-serif; =
WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; =
FONT-WEIGHT: 400; COLOR: rgb(34,34,34); FONT-STYLE: normal; ORPHANS: 2; =
WIDOWS: 2; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); =
TEXT-INDENT: 0px; font-variant-ligatures: normal; font-variant-caps: =
normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; =
text-decoration-color: initial'>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000"><BR><BR>john</DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000">&nbsp;</DIV>
<DIV=20
style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: =
#000000"><BR>https://jniolon.classicpickup.com/</DIV></DIV></DIV></BODY><=
/HTML>

------=_NextPart_000_09B7_01D593F8.3D476800--

--===============8838621861171050926==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________

[email-masked]
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive

--===============8838621861171050926==--

---

From: Donald H Locker via Shop-talk <[email-masked]>
Date: Tue, 5 Nov 2019 18:16:16 -0500

Fuse for the wire size; smoke escaping from the wire is a fire hazard. 
If the motor stall current is consistent at 12A, I'd go with 15A fuses - 
enough to cover the motor loads but only just enough. (A 15A automotive 
fuse will carry 15A forever (c.f. 
https://www.littelfuse.com/~/media/automotive/datasheets/fuses/passenger-car-and-commercial-vehicle/blade-fuses/littelfuse_mini_datasheet.pdf 
and 
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/product-datasheets-b/bus-ele-ds-2009-atc.pdf) 
but will fuse in 750ms at 20A

HTH,
Donald.
--
*Plain Text* email -- it's an accessibility issue
() no proprietary attachments; no html mail
/\ <http://www.georgedillon.com/web/html_email_is_evil.shtml>

On 2019-11-05 5:44 p.m., john niolon via Shop-talk wrote:
> I’m wiring for my power seats in my truck project. My wiring harness 
> didn't include this circuit so I'm coming off a battery termination 
> point. Thinking about fusing each seat. The internal wiring is 14 ga and 
> doing a amp check I read from 3-6 amps with any of the 3 motors 
> (tilt/raise/for-back) running and around 12 amps when you hit the stops 
> and the motor stalls. I know 14 ga is good for 18-20 amps but I'm trying 
> to decide how much to fuse it.. I wanna keep the smoke inside but don't 
> want to fuse too high.... would you consider a percentage over stall amp 
> draw or running amp draw..... and what safety factor ??  I should 
> already know this at my age...
> 
> 
> john
> 
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.96
> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/[email-masked]
> 

[email-masked]
Donate: http://www.team.net/donate.html
Suggested annual donation  $12.96
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive

Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/[email-masked]

---

From: Randall via Shop-talk <[email-masked]>
Date: Tue, 5 Nov 2019 21:04:03 -0600

--===============8401793124502381739==
	boundary="_F2E6146D-313E-42FB-9F61-D840E6E64758_"

--_F2E6146D-313E-42FB-9F61-D840E6E64758_
Content-Transfer-Encoding: quoted-printable

I would seriously consider a 20 amp circuit breaker instead of a fuse.

Perhaps they aren=E2=80=99t all that way, but on my cars with power seats, =
you can run 2 or 3 of the motors at the same time.  Tilt, for example, runs=
 the front motor up and the rear motor down.

-- Randall

From: john niolon via Shop-talk
Sent: Tuesday, November 5, 2019 4:44 PM
To: shop-talk
Subject: [Shop-talk] keeping the smoke in----fuse selection for a circuit

I=E2=80=99m wiring for my power seats in my truck project. My wiring harnes=
s didn't include this circuit so I'm coming off a battery termination point=
. Thinking about fusing each seat. The internal wiring is 14 ga and doing a=
 amp check I read from 3-6 amps with any of the 3 motors (tilt/raise/for-ba=
ck) running and around 12 amps when you hit the stops and the motor stalls.=
 I know 14 ga is good for 18-20 amps but I'm trying to decide how much to f=
use it.. I wanna keep the smoke inside but don't want to fuse too high.... =
would you consider a percentage over stall amp draw or running amp draw....=
. and what safety factor ??=C2=A0 I should already know this at my age...

john
=C2=A0

--_F2E6146D-313E-42FB-9F61-D840E6E64758_
Content-Transfer-Encoding: quoted-printable

<html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc=
hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of=
fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta ht=
tp-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta name=
=3DGenerator content=3D"Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
	{font-family:"Cambria Math";
	panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
	{font-family:Calibri;
	panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
	{font-family:Verdana;
	panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
	{margin:0in;
	margin-bottom:.0001pt;
	font-size:11.0pt;
	font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
	{mso-style-priority:99;
	color:blue;
	text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
	{mso-style-priority:99;
	color:#954F72;
	text-decoration:underline;}
.MsoChpDefault
	{mso-style-type:export-only;}
@page WordSection1
	{size:8.5in 11.0in;
	margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
	{page:WordSection1;}
--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>I would seriously consider a 20 amp =
circuit breaker instead of a fuse.</p><p class=3DMsoNormal><o:p>&nbsp;</o:p=
></p><p class=3DMsoNormal>Perhaps they aren=E2=80=99t all that way, but on =
my cars with power seats, you can run 2 or 3 of the motors at the same time=
.=C2=A0 Tilt, for example, runs the front motor up and the rear motor down.=
</p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>-- Randa=
ll<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div style=3D'ms=
o-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;paddin=
g:3.0pt 0in 0in 0in'><p class=3DMsoNormal style=3D'border:none;padding:0in'=
><b>From: </b><a href=3D"mailto:[email-masked]">john niolon via S=
hop-talk</a><br><b>Sent: </b>Tuesday, November 5, 2019 4:44 PM<br><b>To: </=
b><a href=3D"mailto:[email-masked]">shop-talk</a><br><b>Subject: =
</b>[Shop-talk] keeping the smoke in----fuse selection for a circuit</p></d=
iv><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal><span sty=
le=3D'font-size:12.0pt;font-family:"Verdana",sans-serif;color:#222222'>I=E2=
=80=99m wiring for my power seats in my truck project. My wiring harness di=
dn't include this circuit so I'm coming off a battery termination point. Th=
inking about fusing each seat. The internal wiring is 14 ga and doing a amp=
 check I read from 3-6 amps with any of the 3 motors (tilt/raise/for-back) =
running and around 12 amps when you hit the stops and the motor stalls. I k=
now 14 ga is good for 18-20 amps but I'm trying to decide how much to fuse =
it.. I wanna keep the smoke inside but don't want to fuse too high.... woul=
d you consider a percentage over stall amp draw or running amp draw..... an=
d what safety factor ??&nbsp; I should already know this at my age...</span=
><span style=3D'font-size:12.0pt;color:black'><o:p></o:p></span></p><div><p=
 class=3DMsoNormal><span style=3D'font-size:12.0pt;color:black'><br><br>joh=
n<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-=
size:12.0pt;color:black'>&nbsp;<o:p></o:p></span></p></div><p class=3DMsoNo=
rmal><span style=3D'font-size:12.0pt;color:black'><br>https://jniolon.class=
icpickup.com/<o:p></o:p></span></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></=
p></div></body></html>=

--_F2E6146D-313E-42FB-9F61-D840E6E64758_--

--===============8401793124502381739==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

[email-masked]

--===============8401793124502381739==--