Note: Each of the separate terminal blocks shown above need to have an equal voltage
across all of the terminals. The colored lines show what voltage should exist on each block.
TB1A should have 120 VAC + on each terminal on the block and TB1B should have 24 VAC
+ on each terminal on the block. TB1B and TB2B are “common” and share the voltage from
the TBG (ground); this voltage is then jumped through the blocks. The TBG block is
grounded through the DIN rail to the case. TB3 (not shown here) will not have the same
voltage across all the terminals and jumpers are not needed.
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