I assume that this is the right platform to ask regarding very basic and practical physical connection of current transformer to ADC. I have a TPN 3x8way DB and plan to use 2xmcp3208 and esp8266 to monitor few load currents and all 3 phase voltages. But all project items won’t fit inside DB and also esp8266 will suppress Wi-Fi signal inside metallic DB. So I plan for providing only current transformers and voltage transformers inside DB and using 2meter CAT5e/CAT6 cables to extend connection to mcp3208/esp8266 board located outside DB. The below are my 2 options also shown as diagram below
- Bleed resistor outside DB next to ADC
- Bleed resistor inside DB
in both cases I plan for CAT5e or CAT6 cable and RJ45 socket and jack for both sides.
Requesting your expert opinions on these setup.
---- My doubts
- I prefer bleed resistor inside db (Option2) to avoid higher voltage risk while pulling the connector in either side. Does this setup effect on noise picked up by ADC?
- Is it Ok to use RJ45 connector?
- Is it ok to use each twisted pairs of CAt5e/cat6 for each current transformer?