Xantrex SOLAR CHARGE CONTROLLER 30 Owner's Manual page 23

Ground
a. The charge controller is a common-negative charge
controller, where all the negative terminals of the PV array
and battery can be grounded simultaneously or just any one
of them.
However, in some practical applications, all negative
terminals of the PV array and battery can also be
ungrounded. If this is the case, the grounding terminal on the
charge controller must be grounded, which may prevent
electromagnetic interference from the environment and also
prevent personal injury due to electric shock.
Accessory
a. Attach the Remote Battery Temperature Sensor (PN:
708-0080)'s lead to the lead-acid battery case.
b. Connect the BTS cable to the charge controller's BTS
terminal.
Energize
a. Close the PV Disconnect device on the red pos(+) PV cable.
b. Re-install the DC fuse in the fuse holder on the battery's red
pos(+) cable
c. Remove the blanket covering the solar panel.
975-1012-01-01 Rev B
Oct 2019
NOTE: To prolong the life of lead-acid batteries, the
charge controller uses an algorithm in conjunction with
the optional BTS to compensate for battery temperature
fluctuations. This means, charging parameters are
automatically adjusted for an efficient charging of the
lead-acid battery.
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