EnerSys Alpha TE33-1820 Technical Advisory Bulletin
EnerSys Alpha TE33-1820 Technical Advisory Bulletin

EnerSys Alpha TE33-1820 Technical Advisory Bulletin

Pole mount rpn enclosure

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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
Copyright © 2019 Alpha Technologies. All Rights Reserved. Alpha® is a registered trademark of Alpha Technologies.
Other product names mentioned in this document may be registered in certain jurisdictions. Information is subject to change without notice.
Page 1 of 3
0470452-TAB Rev A (04/2020)
F-MKT-04 Rev 1.4

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Summary of Contents for EnerSys Alpha TE33-1820

  • Page 1 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 •...
  • Page 2 Grounding Instructions 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).
  • Page 3 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.

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