12
CURRENT TECHNOLOGY
®
PX3
TM
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
If the PX3 is mounted detached, the performance of the PX3 will be severely
limited if the conductors are too long, are of too small a wire gauge, have too
many bends, or have sharp bends .
tnbpowersolutions.com/current_technology
Conductor Sizing and
Overcurrent Protection
Model
Without Disconnect
With Disconnect
PX3-050
#6 AWG
#6 AWG
PX3-080
#6 AWG
#6 AWG
PX3-100
#6 AWG
#6 AWG
PX3-125
#2 AWG
Product Not Available
PX3-150
#2 AWG
Product Not Available
PX3-200
#2 AWG
Product Not Available
NOTE:
Table 2 conductor sizing recommendations ensure that the effective
clamping voltage of the PX3 at the point of connection is kept to a minimum in
order to maximize protection.
Overcurrent Protection:
As a Type 1 SPD the PX3 does not require
upstream overcurrent protection for safe operation, however, the design may
require or the installer may choose to connect the PX3 to a circuit breaker,
molded case switch or fused disconnect .
Table 2: Maximum Recommended Conductor Size
Use conductor lengths less than 10 feet
Conductor Length and Sizing:
Conductor length must be kept as short
as possible and avoid sharp bends . Conductor length must never exceed 10
feet in length from phase bus through the PX3 to the neutral bus or ground
bus . If the lead length must exceed 10 feet, Current Technology
®
recommends
using our HPI low impedance cable for installing the product . The following
conductor sizes for phase, ground and neutral connections are recommended .
