zappi
operation and installation manual
31
Installation
CT Golden Rules
Grid CT
•
Only ONE Grid CT per phase (check for only one ~ symbol in Linked Devices Info).
•
Located to
‘see’ ALL import and ALL export current (i.e. always upstream of any junction box).
•
Arrow pointing in direction of import (e.g. towards consumer unit if on Live cable).
•
Must be on the same phase as the Master
myenergi
device.
All other CTs
•
Arrow should point towards the consumer unit.
CT can dos
✔
Can be wired to ANY
myenergi
device in the network.
✔
Cable can be extended up to 100m (must use twisted-pair cable e.g. one pair of CAT5).
✔
Cable can be shortened.
✔
Can be clipped around two or more conductors feeding appliances of the same type (e.g. two Live cables from two
inverters that are on the same phase).
✔
Can be in close proximity to other CTs.
✔
Wires can be swapped around in device to reverse the direction of the readings (e.g. change import to export).
✔
Can be grouped with other CTs of the same type so that the power reading is summed (e.g. east and west solar
Generation).
✔
Can be used on the Neutral conductor (direction of arrow or wires must be reversed).
✔
Can be set to None if you want to exclude the reading.