REFLECTOR:Buss material
Al Gietzen
reflector@tvbf.org
Sun, 25 Apr 2004 08:23:51 -0700
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Thanks for info on buss material. I thought there might be a corrosion
issue on aluminum. I know there is an issue of fatigue failure as well =
in
wires, which wouldn=92t be in a buss.
=20
Aluminum is at least a good conductor; resistance about 1.6 times that =
of
copper. Brass, on the other hand, has resistance about 4 times that of
copper. The 1/8=94 x =BD=94 copper I had I got from Aeroelectric; I was =
surprised
to find that he is now selling .025 thick brass instead. In a =BD=94 =
width,
that=92s equivalent to about a #15 wire. Seems pretty marginal for a =
buss
with half dozen or more circuits running off. The copper was equal to =
about
a #2 wire. 1/8=94 brass would be great =96 now where will I get that on =
Sunday.
. . .=20
=20
Who=92s selling copper buss?? I have some .040 wall copper pipe laying
around. I could cut and flatten that. =BD=94 wide would be about a #7 =
wire.
That would handle it.
=20
If you DO decide to go with Aluminum, how about sending the Copper to =
me.=20
I promise I will give it a GOOD home .... Jim S.
=20
Sorry, Jim; no copper coming your way. I used most of what I had on =
ground
busses. Considered the aluminum because I hate having to go show parts
when I=92m in the middle of a job.
=20
Al
-----Original Message-----
From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org] On =
Behalf
Of KeithHallsten
Sent: Saturday, April 24, 2004 7:44 PM
To: reflector@tvbf.org
Subject: Re: REFLECTOR:Buss material
=20
Al,
=20
Just the usual concerns with aluminum conductors. A little light =
corrosion
in an aluminum connection has a lot of resistance, whereas a little =
light
corrosion on copper adds only slight resistance. Extra resistance =
causes
heat, which accelerates corrosion. A vicious circle. Therefore, you =
need
to make extra certain you do what you can to prevent corrosion at the
connections to an aluminum buss. Special coatings, etc. On balance, I
don't think it's worth it - I'd get some more copper!
=20
Keith Hallsten
=20
----- Original Message -----=20
From: Al Gietzen <mailto:ALVentures@cox.net> =20
To: reflector <mailto:reflector@tvbf.org> =20
Sent: Saturday, April 24, 2004 11:10 AM
Subject: REFLECTOR:Buss material
=20
I had some 1/8=94 copper buss material that I used most of for ground =
buss.
Any reason not to use 1/8=94 aluminum for circuit breaker buss?
=20
Al
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<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Thanks for info on buss material. =
=A0I
thought there might be a corrosion issue on aluminum.=A0 I know there is =
an issue
of fatigue failure as well in wires, which wouldn’t be in a =
buss.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Aluminum is at least a good =
conductor;
resistance about 1.6 times that of copper. =A0Brass, on the other hand, =
has
resistance about 4 times that of copper.=A0 The 1/8” x =BD” =
copper I
had I got from Aeroelectric; I was surprised to find that he is now =
selling
.025 thick brass instead.=A0 In a =BD” width, that’s =
equivalent to
about a #15 wire.=A0 Seems pretty marginal for a buss with half dozen or =
more
circuits running off.=A0 The copper was equal to about a #2 wire.=A0 =
1/8”
brass would be great – now where will I get that on Sunday. . . . =
</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Who’s selling copper =
buss??=A0 I
have some .040 wall copper pipe laying around.=A0 I could cut and =
flatten that. =BD”
wide would be about a #7 wire. That would handle it.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'> </span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>If you DO decide to go with Aluminum, how about sending the =
Copper to
me. <br>
I promise I will give it a GOOD home .... Jim S.</span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Sorry, Jim; no copper coming your =
way. I
used most of what I had on ground busses.=A0 Considered the=A0 aluminum =
because I
hate having to go show parts when I’m in the middle of a =
job.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dblue face=3DVerdana><span =
style=3D'font-size:
11.0pt;font-family:Verdana;color:blue'>Al</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> =
reflector-admin@tvbf.org
[mailto:reflector-admin@tvbf.org] <b><span style=3D'font-weight:bold'>On =
Behalf
Of </span></b>KeithHallsten<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> </span></font><font =
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'>Saturday, April
24, 2004</span></font><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma'> </span></font><font size=3D2 face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>7:44 =
PM</span></font><font size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'><br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
reflector@tvbf.org<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: =
REFLECTOR:Buss
material</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Al,</span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Just the usual concerns =
with
aluminum conductors. A little light corrosion in an aluminum =
connection
has a lot of resistance, whereas a little light corrosion on copper adds =
only
slight resistance. Extra resistance causes heat, which accelerates =
corrosion.
A vicious circle. Therefore, you need to make extra certain you do =
what
you can to prevent corrosion at the connections to an aluminum =
buss.
Special coatings, etc. On balance, I don't think it's worth it - =
I'd get
some more copper!</span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Keith =
Hallsten</span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
</div>
<blockquote style=3D'border:none;border-left:solid black =
1.5pt;padding:0in 0in 0in 3.0pt;
margin-left:3.0pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>=
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>----- Original Message =
----- </span></font></p>
</div>
<div style=3D'font-color:black'>
<p class=3DMsoNormal =
style=3D'margin-left:.5in;background:#E4E4E4'><b><font size=3D2
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span=
></font></b><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> <a
href=3D"mailto:ALVentures@cox.net" title=3D"ALVentures@cox.net">Al =
Gietzen</a> </span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><b><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;font-weight:bold'>To:</span><=
/font></b><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> <a
href=3D"mailto:reflector@tvbf.org" =
title=3D"reflector@tvbf.org">reflector</a> </span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><b><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;font-weight:bold'>Sent:</span=
></font></b><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> Saturday,
April 24, 2004 11:10 AM</span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><b><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;font-weight:bold'>Subject:</s=
pan></font></b><font
size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial'> REFLECTOR:Buss
material</span></font></p>
</div>
<div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
</div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DVerdana><span
style=3D'font-size:11.0pt;font-family:Verdana'>I had some 1/8” =
copper buss
material that I used most of for ground buss. Any reason not to =
use
1/8” aluminum for circuit breaker buss?</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DVerdana><span
style=3D'font-size:11.0pt;font-family:Verdana'>Al</span></font></p>
</blockquote>
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