"))"
BdYZa<%))%$<%))&$<%))(B[\H^cXZ-$&%
System Grounding
H^cXZeaVhi^X]dhZ^hVWjcYVci!gZaVi^kZan^cZmeZc"
h^kZ!ZVh^an VhhZbWaZYVcYV^gi^\]i! ^i^h VkZgn
edejaVg bViZg^Va [dg XdckZn^c\ Yjhi [gdb lddY"
ldg`^c\bVX]^cZhidi]ZYjhiXdaaZXidg#=dlZkZg!
eaVhi^X[aZm"]dhZVcYeaVhi^XYjXiVgZVc^chjaVidg!
VcYYjhieVgi^XaZhbdk^c\V\V^chii]ZlVaahd[i]Z
eaVhi^XYjXiXgZViZVhiVi^XZaZXig^XVaWj^aYje#I]^h
X]Vg\Z l^aaWj^aY jci^a^i Y^hX]Vg\Zhid V\gdjcY#
>[V\gdjcY^c\bZY^jb^hcdiVkV^aVWaZidegZkZci
hiVi^XZaZXig^XVaWj^aYje!i]ZZaZXig^XVaX]Vg\Zl^aa
VgXidi]ZcZVgZhi\gdjcYZYhdjgXZ#I]^hZaZXig^"
XVaY^hX]Vg\ZbVnXVjhZVcZmeadh^dcVcYhjWhZ"
fjZci[^gZ^ch^YZi]ZhnhiZb#
IdegdiZXiV\V^chihiVi^XZaZXig^XVaWj^aYje^ch^YZ
Vcdc"XdcYjXi^c\YjXi!VWVgZXdeeZgl^gZh]djaY
WZ eaVXZY ^ch^YZ i]Z YjXi Vadc\ ^ih aZc\i] VcY
\gdjcYZY id i]Z Yjhi XdaaZXidg# Ndj bjhi Vahd
Xdc[^gb i]Vi i]Z Yjhi XdaaZXidg ^h Xdci^cjdjhan
\gdjcYZYi]gdj\]i]ZZaZXig^XVaX^gXj^iidi]ZZaZX"
ig^XhZgk^XZeVcZa#
>[ndjXdccZXii]ZYjhiXdaaZXidgidbdgZi]VcdcZ
bVX]^cZ Wn lVn d[ Vcdc"XdcYjXi^c\ WgVcX]^c\
YjXihnhiZbVcYWaVhi\ViZh!i]ZhnhiZbbjhihi^aa
WZ \gdjcYZY Vh bZci^dcZY VWdkZ# LZ gZXdb"
bZcY^chZgi^c\VXdci^cjdjhWVgZXdeeZg\gdjcY
l^gZ^ch^YZi]ZZci^gZYjXihnhiZbVcYViiVX]^c\
i]Zl^gZidZVX]\gdjcYZYlddYldg`^c\bVX]^cZ
VcYYjhiXdaaZXidg#
Always guard against
static electrical build up
by grounding all dust
collection lines.
7Z hjgZ i]Vi ndj ZmiZcY i]Z WVgZ XdeeZg l^gZ
Ydlc VaaWgVcX]Zh d[i]Z hnhiZb#9dcdi [dg\Zi
idXdccZXii]Zl^gZhidZVX]di]Zgl^i]l^gZcjih
l]ZcildWgVcX]ZhbZZiViV¸N¹dg¸I¹XdccZX"
i^dc#
:chjgZ i]Vi i]Z Zci^gZ hnhiZb ^h \gdjcYZY# >[
jh^c\ eaVhi^X WaVhi \ViZh id Y^gZXi V^g [adl! i]Z
\gdjcY^c\l^gZbjhiWZ_jbeZYhZZFigure 56
VgdjcYi]Z WaVhi\ViZl^i]dji^ciZggjei^dc idi]Z
\gdjcY^c\hnhiZb#
EaVhi^X7aVhi
<ViZ
BZiVa9jXi
8deeZg
<gdjcYL^gZ
Figure 56.<gdjcY_jbeZgl^gZXdccZXi^c\Wdi]
h^YZhd[VeaVhi^X\ViZVcYbZiVaYjXi^c\#
LZVahdgZXdbbZcYlgVee^c\i]Zdjih^YZd[Vaa
eaVhi^XYjXihl^i]WVgZXdeeZgl^gZid\gdjcYi]Z
djih^YZd[i]ZhnhiZbV\V^chihiVi^XZaZXig^XVaWj^aY
je# L^gZ XdccZXi^dch Vi N»h VcY I»h h]djaY WZ
bVYZl^i]l^gZcjih#
6iiVX] i]Z WVgZ \gdjcY l^gZ id ZVX] hiVi^dcVgn
lddYldg`^c\ bVX]^cZ VcY ViiVX] id i]Z Yjhi
XdaaZXidg[gVbZl^i]V\gdjcYhXgZlVhh]dlc^c
Figure 57.:chjgZi]ViZVX]bVX]^cZ^hXdci^cj"
djhan\gdjcYZYidi]Z\gdjcY^c\iZgb^cVa^cndjg
ZaZXig^XhZgk^XZeVcZa#
<gdjcYHXgZl
;aZm"=dhZ
>ciZgcVa<gdjcY
L^gZ
:miZgcVa<gdjcYL^gZ
Figure 57.EaVhi^X[aZm]dhZ\gdjcYZYidi]Z
bVX]^cZ#