EnerSys Alpha TE33-1820 Instruction Manual

For more information visit www.alpha.com Page 1 of 3
Copyright © 2019 Alpha Technologies. All Rights Reserved. Alpha® is a registered trademark of Alpha Technologies. 0470452-TAB Rev A (04/2020)
Other product names mentioned in this document may be registered in certain jurisdictions. Information is subject to change without notice. F-MKT-04 Rev 1.4
TECHNICAL ADVISORY BULLETIN
Recommended Grounding for TE33-1820 Pole Mount RPN Enclosure
Date: 4/21/2020
Model #: TE33-1820 Remote Power Node Enclosure
Issue
•As there are a few configurations of the TE33-1820 RPN, additional information on grounding is
required beyond what is already provided in the installation manual.
Corrective Action
•Provide detailed grounding instructions with a diagram for the pole mount TE33-1820 RPN
enclosure.
•The grounding specifications and diagram depicted in this TAB are based on recommended
industry best practices. However, site grounding design and construction shall always adhere to
local electrical codes and the internal standards of the company that is responsible for ownership
and operation of equipment.
Warning
•Only qualified personal should install and connect the power components within the Alpha
system.
•An enclosure that is not properly grounded presents an electrical hazard and will likely result in
premature equipment failure.
•A proper grounding system (i.e. ground electrode system) that meets or exceeds the
specifications of the equipment must be designed and installed prior to or in conjunction with
the installation. The ground system must be bonded to the enclosure to ensure a “common” or
“single-point” ground.

For more information visit www.alpha.com Page 2 of 3
Copyright © 2019 Alpha Technologies. All Rights Reserved. Alpha® is a registered trademark of Alpha Technologies. 0470452-TAB Rev A (04/2020)
Other product names mentioned in this document may be registered in certain jurisdictions. Information is subject to change without notice. F-MKT-04 Rev 1.4
Grounding Instructions
1. Install a continuous length of #6AWG tinned solid copper ground wire (grounding electrode
conductor) connecting the two driven ground rods and terminate it on the ACEG bus in the
AC service disconnect enclosure. This length of conductor serves as a Vertical Ground Riser
(VGR) (Refer to Figure 1).
Note: It is recommended that all buried grounding connectors are 12” below finished grade
line or below the frost line. For below grade connections, crimp or mechanical connectors may
be used instead of an exothermic weld provided they are listed for direct burial applications.
Figure 1 –TE33-1820 RPN Grounding Diagram

For more information visit www.alpha.com Page 3 of 3
Copyright © 2019 Alpha Technologies. All Rights Reserved. Alpha® is a registered trademark of Alpha Technologies. 0470452-TAB Rev A (04/2020)
Other product names mentioned in this document may be registered in certain jurisdictions. Information is subject to change without notice. F-MKT-04 Rev 1.4
2. Route a length of #6 AWG tinned solid copper conductor from a junction point with the VGR
at a location below the cabinet to the Enclosure MGB, located on the right-side wall. Connect
the length of conductor to the VGR via an irreversible compression connector or exothermic
weld and connect the other end to the Enclosure MGB using a suitable two-hole compression
lug. The enclosure MGB accepts a two-hole lug with 3/8” holes on 1” centers (refer to Figure
2).
Note: Avoid tight radius bends and route the conductor such that it intersects with the VGR in
a downward manner as illustrated in Figure 1.
For additional assistance or if you have any questions regarding this notification, please contact
Alpha Technical Support at 1-888-462-7487 or www.alpha.ca/report-a-problem.
Sincerely,
Satheesh Hariharan David Veraguth
Sr. Product Manager, Outside Plant Solutions Sr. Technical Support Representative
Alpha Technologies Ltd. Alpha Technologies Ltd.
[email protected] Davi[email protected]
For assistance, contact Alpha Technical Support:
Toll Free North America: 1-888-462-7487
International: [phone]
Monday - Friday, 7:00 AM - 5:00 PM PST for regular inquires
24/7 for emergency support
Figure 2 –TE33-1820 RPN Enclosure Master Ground Bar Wiring