Cut Sheet
2
Technical Data TD01701001E
Effective March 2017
UL low-voltage busway
Pow-R-Way III
EATON www.eaton.com
General description
Eaton’s Pow-R-Way III
®
is a 600 V, totally enclosed, non-ventilated,
sandwich bus design available with copper bus bars in ratings
from 225 to 5000 A or with aluminum bus bars from 225 to 4000 A.
Pow-R-Way III is available in outdoor feeder, indoor feeder, indoor
plug-in, and indoor sprinkler-proof configurations. All four types
can be used interchangeably without adapters or special splice
plates, provided they are of the same current and system rating.
The short-circuit withstand ratings for plug-in busway are equal
to those of indoor and outdoor feeder busway. For IEC ratings
and data, see TD01701005E.
Standards
Pow-R-Way III meets the requirements of NEMA
®
, UL
®
857, CSA
®
C22.2 No. 27-94, IEEE,
®
ANSI, IEC, CE, and is manufactured in
an ISO
®
9001 certified facility. Pow-R-Way III is also certified for
Seismic Withstand Capability in accordance with the earthquake
requirements as specified in both the International Building Code
(IBC) and the California Building Code. Pow-R-Way III exceeds the
worst-case Zone 4 required levels and meets all applicable seismic
standards for the International Building Code (IBC).
Figure 1. Pow-R-Way III joint design
3-Phase
,
3-Wir
e
with Housin
g
Groun
d
3
W
H
A
B
C
3-Phase
,
4-Wir
e
with Housin
g
Groun
d
and 100
%
Neutral 4W
H
A
B
C
N
3-Phase
,
4-Wir
e
with Housin
g
Groun
d
and 200
%
Neutral 4WN
H
A
B
C
N
3-Phase
,
3-Wir
e
with 50
%
Internal o
r
I
so
l
ated
G
r
ou
n
d
B
us
3
W
G
o
r
3
W
I
G
A
B
C
3-Phase, 4-Wir
e
with 50
%
Internal o
r
I
so
l
ated
G
r
ou
n
d
Bus and 100% Neutra
l
4WG or 4W
I
G
A
B
C
N
3-Phase
,
4-Wir
e
with 50
%
Internal o
r
I
so
l
ated
G
r
ou
n
d
Bus and 200
%
Neutra
l
4WN
G
o
r 4WN
I
G
A
B
C
N
Figure 2. Conductor configurations
Table 1. Pow-R-Way designations (see Figure 2)
Available conductor configurations including grounding
and neutral options
3WG
3WI
3WH
3WHG
Three-phase, three-wire, 50% internal ground
Three-phase, three-wire, 50% isolated internal ground
Three-phase, three-wire, 50% integral housing ground
Three-phase, three-wire, 100% ground
a
4WG
4WI
4WH
4WHG
Three-phase, four-wire, 50% internal ground, 100% neutral
Three-phase, four-wire, 50% isolated internal ground, 100% neutral
Three-phase, four-wire, 50% integral housing ground, 100% neutral
Three-phase, four-wire, 100% ground
a
, 100% neutral
4WNG
4WNI
4WNH
4WNHG
Three-phase, four-wire, 50% internal ground, 200% neutral
Three-phase, four-wire, isolated internal ground, 200% neutral
Three-phase, four-wire, 50% integral housing ground, 200% neutral
Three-phase, four-wire, 100% ground
a
, 200% neutral
a
100% Ground consists of the 50% integral housing ground combined with a 50%
internal ground bus.