Installation Manual

Page 57
© 2013 Magnum Energy, Inc.
Appendix A - Optional Equipment and Accessories
TO PROTECT
DC INPUT TO
INVERTER
TO PROTECT
INPUT TO
DC LOADS
TO PROTECT
AC INPUT
TO
INVERTER
TO
LIGHTNING
ARRESTOR
TO
INVERTER
AC INPUT
AC
TERMINAL
BLOCK
SIDE VIEW
NOTE: CRIMP A RING
TERMINAL WITH A 5/16"
OPENING TO THE LIGHTNING
ARRESTOR WIRES AND
CONNECT TO THE
MAGNUM
INVERTER
DC TERMINALS.
F
OLLOW THE PROPER DC
HARDWARE STACK AND ENSURE
THERE IS NOTHING BETWEEN
THE
DC BUSBARS AND THE
INVERTER
’S DC TERMINALS.
N
OTE: THE AC TERMINAL BLOCK IS NOT RATED
TO CONNECT MORE THAN ONE WIRE LARGER THAN
#12 AWG. THEREFORE, TO CONNECT A
LIGHTNING ARRESTOR, A SERVICE ENTRANCE
CONNECTOR
(OR SPLIT BOLT) IS REQUIRED TO
CONNECT BOTH THE INVERTER
’S AC INPUT WIRE
AND THE LIGHTNING ARRESTOR WIRE TO THE
AC
TERMINAL BLOCK.
E
NSURE THE SERVICE ENTRANCE CONNECTORS ARE
INSULATED FROM EACH OTHER TO PREVENT THE
AC INPUT WIRES FROM SHORTING TO EACH
OTHER
.
SERVICE
ENTRANCE
CONNECTOR
(SPLIT BOLT)
Lightning
Arrestor
(AC rated)
Lightning
Arrestor
(DC rated)
Lightning
Arrestor
(DC rated)
Figure A7-2, Wiring Lightning Arrestor to MMP Enclosure
Info: Make sure enough insulation is stripped so that the inverter’s AC input wire is
fully inserted in the AC terminal block and enough uninsulated wire is still available
to contact with the lightning arrestor wire when using the service entrance connector.
Info: Readily used service entrance connectors are available at most electrical dealers
– for example, the Type SX manufactured by Ilsco (www.ilsco.com), or the Type N
manufactured by Thomas and Betts (www.tnb.com).