JG Electrical Services Limited is a leading electrical contracting company that has been involved in renewable energy for many years, based in Bognor Regis in West Sussex. When you are looking for Solar PV, Battery Storage, EV chargers and any Renewable energy solution, make sure you check out the companies, even the bigger ones. We see many Solar Problem Installations that are not acceptable however these have been done by certified (and sometimes uncertified) companies, below is a small list of Solar Problem Installations we have come across that are either bad installations or potentially dangerous and a fire hazard:
- EV charger Installed without an RCD on a TT System
- Solar Panels installed that is outside the limits of the Solar PV inverter which can cause premature failure of the Inverter
- Solar PV inverters installed direct onto wooden frames or boards, against manufacturers installation instructions as the inverters heatsinks (normally on the back) can get very hot in the summer under full load and this can cause a fire hazard.
- DC Energy Battery Systems with the Incorrect DC Isolators fitted that are not of a suitable current for the battery DC, normally 100+ amps, again this can be very dangerous.
- Solar PV DC Switches either not installed or with the Incorrect DC Isolators fitted that are not of a suitable current for the voltage of the PV String, again this can be very dangerous.
- Solar PV Panels Installed badly, not enough brackets, calculations not done (or acceptable) for roof loading, Panels installed too close to the ridge or gutter or sides.
- Solar PV cables tucked under tiles, this will lead to chaffing and a DC fault on the inverter eventually causing it to trip and stop generating.
- Solar PV Cables taken through the roof tile membrane by drilling holes in it or ripping it or just tucking under the tile, this will cause leaks in heavy rain conditions as the rain runs under the tiles. The cables may chaff and degrade and then cause a fault.
- Solar Panel Array on roof not earthed – this is new under MCS from late 2023 but many installers are not doing this.
- Inverters not commissioned (ie Solar Edge showing G100 Restriction) properly and not generating.
- Battery Installed in loft and no fire precautions taken.
- Batteries installed outside, the low outside winter temperatures will cause battery problems long term.
- Poorly installed solar panels causing roof leaks or structural damage. Inadequate Mounting where Panels not securely mounted, posing a risk of detachment in high winds.
- Improper ventilation around panels and/or inverters and batteries leading to heat buildup and reduced performance.
- Overloading electrical circuits due to improper installation or connection.
- Lack of Certification: Installers lacking proper certification or training, compromising installation quality, along with Incomplete or inaccurate documentation, causing issues with warranties or local planning/building notifications.
- Solar Panels obstructed by nearby structures or foliage, reducing sunlight exposure, Where failure to assess potential shading issues, reducing overall system performance.
- Inaccurate sizing of the system leading to underperformance or excess energy production.
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