# 26.88 kWp Single Phase ESS UK **URL:** \ **Category:** Show us your system\ **Tags:** victron\_community, vrm, ess, quattro\ **Created:** [12 January 2025 23:05 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447 "2025-01-12T23:05:26Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![JackAspeyEnergy](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jackaspeyenergy/32/13233_2.png) [@JackAspeyEnergy](https://community.victronenergy.com/u/JackAspeyEnergy)\ **Post date:** [12 January 2025 23:05 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/1 "2025-01-12T23:05:26Z")
Here is a project designed and installed by ourselves at AspeyEnergy. The customer was end of line and suffered from frequent power cuts so was looking for a system that could provide backup. 64 x 420w REC Pure Alpha R Black Panels 2 x SmartSolar MPPT RS 450/200 Charge Controllers 1 x Quattro 48/8000/200 2 x 15.4kWh BYD LVL Last year the solar generated 5202 kWh of energy resulting in the customer being 64% self sufficient for the year. It also provided backup for his house for the 16 power cuts he experienced. ![IMG_7955](https://europe1.discourse-cdn.com/victron/original/2X/d/da61a944c6cd44a5631e93fd102f2c57922c49fd.jpeg) ![IMG_7959](https://europe1.discourse-cdn.com/victron/original/2X/0/02addfc621661c33036f3859776c666bfed3a4d1.jpeg) ![IMG_7962](https://europe1.discourse-cdn.com/victron/original/2X/8/83de56d496cb3f05ab713b7d7f0848f95868e6ef.jpeg) ---
**Author:** ![maa](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/maa/32/685_2.png) [@maa](https://community.victronenergy.com/u/maa)\ **Post date:** [14 January 2025 13:22 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/2 "2025-01-14T13:22:15Z")
Very clean installation, but why only use one disconnect on the triple knife disconnect for the Quattro? ---
**Author:** ![JackAspeyEnergy](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jackaspeyenergy/32/13233_2.png) [@JackAspeyEnergy](https://community.victronenergy.com/u/JackAspeyEnergy)\ **Post date:** [14 January 2025 22:02 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/3 "2025-01-14T22:02:31Z")
Thank you. So that each of the Victron pieces of kit can be isolated separately. Also NH1 & NH2 holders for different size fuses. ---
**Author:** ![maa](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/maa/32/685_2.png) [@maa](https://community.victronenergy.com/u/maa)\ **Post date:** [15 January 2025 09:07 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/4 "2025-01-15T09:07:28Z")
Yes I know but there are unipolar NH2s, like your NH1s. From my point of view you could have taken advantage of this to protect the negative cable… Too bad ---
**Author:** ![JackAspeyEnergy](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/jackaspeyenergy/32/13233_2.png) [@JackAspeyEnergy](https://community.victronenergy.com/u/JackAspeyEnergy)\ **Post date:** [18 January 2025 20:31 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/5 "2025-01-18T20:31:56Z")
We do a fair few 3 phase and parallel units where your not supposed to fuse the negative. In this setup we could of fused it. However the fuse on the + is sufficient. Certainly something to bare in mind on the next one. ---
**Author:** ![maa](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/maa/32/685_2.png) [@maa](https://community.victronenergy.com/u/maa)\ **Post date:** [19 January 2025 16:36 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/6 "2025-01-19T16:36:37Z")
I allowed myself this reflection because in France the 2 poles must OBLIGATORILY have a disconnector ---
**Author:** ![stopburningstuff](https://avatars.discourse-cdn.com/v4/letter/s/bcef8e/32.png) [@stopburningstuff](https://community.victronenergy.com/u/stopburningstuff)\ **Post date:** [3 February 2025 00:29 UTC](https://community.victronenergy.com/t/26-88-kwp-single-phase-ess-uk/18447/7 "2025-02-03T00:29:08Z")
And it is recommended by Victron to leave the negative pole directly connected. Because of potential bonding maybe ?