■ A-meter in one phase (option +G335)The option contains an ammeter that reads the current flowing through one input phase.■ Additional wire markings (options +G340 and +G342)Standard wire markingsAs standard, wires and terminals are marked as follows:• Plug-in connectors of wire sets: Connectors labeled with designation (eg. "X1"). Boththe connector and the individual wires are marked with pin numbers.• Wires without a connector: Connector designation and pin number printed on wire (eg."X1:7").• Fiber optic pairs: Component and connector designation printed on marker tape.• Main input, output and PE terminals: Connector identifier (eg. "U1", "PE") printed onsticker on terminal, or on insulating material close to the terminal. PE cables markedwith yellow/green tape.Additional wire markingsThe following additional wire markings are available.Additional markingsOptionEquipment pin numbers are marked with snap-on markers on wires between modules and on wiresconnected to equipment, terminal blocks and detachable screw terminals. Plug-in connector identi-fications are marked on labels near the connectors. The label holders are attached around conductorbundles. Main circuit conductors are marked with white tape or printing.9. 7 7+G340Equipment identifications and terminal block pin numbers and remote addresses are marked withtubing or rings on wires between modules, and on wires connected to equipment, terminal blocksand detachable screw terminals. Plug-in connector identifications are marked on labels attachedaround the conductor bundles near the connectors. Main circuit conductors are marked with whitetape or printing.Note:Even wires with equipment and pin identifiers ready printed on the wire insulation are marked withrings or tubing. Remote end addresses are not marked on wire ends that are connected to plug-inconnectors. Short and obvious connections are marked with printing only.K1 24K1 24 K1 24K 1 2 4 T 2 3T2 3T2 3T2 3+G342■ Bottom cable entry/exit (options +H350 and +H352)For UL Listed (+C129) units, the default input and output cabling direction is through theroof of the cabinet. The bottom entry (+H350) and bottom exit (+H352) options provideOperation principle and hardware description 49