Planning Your Installation; Minimum Requirements; Above Ground; Ground Connection - Tesla J1772 Manual De Instalación

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Minimum Requirements

Installation of the Wall Connector requires that
you:
Calculate the existing electrical load to
determine the maximum operating
current.
Calculate the distance to ensure minimal
voltage drop.
Obtain any necessary permits from the
local authority that has jurisdiction and
confirm that the follow-up inspection has
been scheduled by an electrician after the
installation is complete.
Use only copper conductors.
Use conductors that are sized in
accordance with local wiring regulations.
The selected cable must be able to sustain
periods of constant load of up to the
maximum amperage selected by the
electrician.
Use a circuit breaker.
Note: Consult with an electrician to ensure
that the installation meets local regulations.
120V Above Ground
Warning: The Wall Connector is a single-
phase device. Do not connect all three
phases of a three-phase feed.
Warning: Before installing the Wall
Connector, identify the type of utility
service connection available on site. If you
are unsure about the type of connection
available at the service panel, consult an
electrician, or contact Tesla for assistance.
Caution: The two phases used must each
measure 120V to neutral. Earth ground
must be connected to neutral at only one
point, usually at the breaker panel.
Caution: If a 240V three-phase feed is
from a Delta-connected secondary, the
leg used must have a center tap. This
center tap must be grounded. Only the
two phases on either side of the center-
tapped leg can be used.

Planning Your Installation

Planning Your Installation
Only three wires are connected, but care must
be taken that the service transformer
secondary connection is definitely known, and
that the three wires from the main circuit
breaker panel are correctly connected and
labeled.
Note: The L1, L2, and ground outputs labeled
on the illustrations correspond to the inputs
on the Wall Connector.

Ground Connection

Always connect the Neutral at the service to
Earth Ground. Ground fault protection is not
possible unless the Neutral (center tap on the
service transformer) is connected to an Earth
Ground. If ground is not provided by the
electrical service, you must install a grounding
stake nearby. the grounding stake must be
connected to the ground bar in the main
breaker panel, and Neutral connected to
Ground at that point.
240V Single-Phase
120V
120V
Note: Illustrations in this document are for
demonstration purposes only.
L1
NEUTRAL
240V
(NOT USED)
L2
GND
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