EPS: "Level 4.5" - Whole House Automatic (AIO)
Posted: Sat Apr 27, 2024 4:01 pm
Hi, I was tinkering and I put together a wiring diagram of what I would like to deploy in my house. Please, qualified electricians, tell me what I'm doing wrong
I would really love to constructively find a solution to this all-in-one concept because I've got space for a 20-way CU but not enough space for an additional change-over box like illustrated in the "Level 4" example.
Additional info:
- The delay relay is to avoid re-energizing the change-over relay if the grid were to come back intermittently, so a delay between 1 minute to 10 minutes would be a neat fix for this potential toggling.
- The changeover will be fast but not immediate (sub 20ms), so not all the house circuits will be suitable for uninterrupted power. The essential electronics (HA Server - Router & ONT - Switching - Modbus - CCTV) will be connected to the EPS CU where uninterruptible power will be available.
- I'm aware that power lines in the loft are a hot topic, but the idea is to manage them in the safest possible way, even if it comes to treating them as outdoor lines (e.g. SWA).
- I've not shown the wires of the circuits coming off the RCDOs because it's beyond the scope.
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Additional info:
- The delay relay is to avoid re-energizing the change-over relay if the grid were to come back intermittently, so a delay between 1 minute to 10 minutes would be a neat fix for this potential toggling.
- The changeover will be fast but not immediate (sub 20ms), so not all the house circuits will be suitable for uninterrupted power. The essential electronics (HA Server - Router & ONT - Switching - Modbus - CCTV) will be connected to the EPS CU where uninterruptible power will be available.
- I'm aware that power lines in the loft are a hot topic, but the idea is to manage them in the safest possible way, even if it comes to treating them as outdoor lines (e.g. SWA).
- I've not shown the wires of the circuits coming off the RCDOs because it's beyond the scope.