Conductor Sizing And Routing - Joslyn JSP Series Installation, Operation And Maintenance Manual

JOSLYN JSP , JSPR INSTALLATION, OPERATION AND MAINTENANCE MANUAL
® TM
Note: High-Leg Orange must be B Phase
B
N
N
C
A
N
Xo BOND
G
EARTH
GROUND
Figure 5
3-Phase High-Leg Delta, 4-Wire
Conductor Sizing & Routing
tnbpowersolutions.com/joslynsurge
1
30–200 AMP, 3-POLE
CIRCUIT BREAKER
A B C
JSP SERIES
A
B
C
G
G
N
2
CONDUCTORS
FURNISHED WITH
JSP SERIES
severely if the conductors are (a) too long, (b) are of too small a wire
gauge, (c) have too many bends or (d) have sharp bends. For optimum
performance never exceed 10' conductor lengths.
The factors listed above should be addressed during the design of an
installation to reserve a suitable place for the JSP Series unit next to its
point of connection to the electrical system . The selected mounting location
should allow for the shortest possible conductor runs and a direct route with
a minimum of bends . If bends are required, they should be sweeping bends .
Do not make sharp 90° bends for appearance purposes because they will
severely decrease the effectiveness of JSP Series unit .
Binding or twisting conductors together using tie-wraps or electrical tape
increases the protection performance of the device .
The conductor length should be as short as possible to ensure the maximum
level of protection . Wires are marked with (Phase A, B, C, Line 1, Line 2,
Neutral or Ground) depending on the model .
1 All JSP Series units can be connected without an
upstream breaker/fuse.
2 JSP 60 through 100kA and all JSPR units are furnished
with #10AWG leads.
CAUTION: The JSP Series unit's performance will be limited
6