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AbleSkills Solar PV Courses Teach The Right Connections!

Installing and operating even the most advanced technology such as a solar photovoltaics system is not immune to human error or careless haste! Of course, this could apply as much to any electrical trade job as with fitting solar PV panels on a homeowner's roof.It's crucial to always know exactly where the problems are likely to occur and pay attention to the fine details. A sense of professional responsibility and work integrity means 'doing the job right' and not saying 'that'll do' because of running out of patience or rushing to complete the task and get to the next job!AbleSkills renewable energy courses follow the rigorous high standards as the extensive range of trade skill courses established for plumbing, electrical, plastering, bricklaying and construction, which are approved and accredited by the statutory and nationally recognised bodies of the BPEC, City & Guilds and NICEIC.Students committed to learn the comprehensive knowledge and skillset required in the relevant subject area of, for example, solar PV courses and solar courses have an invaluable learning opportunity to train to levels 2 and 3 and with options to go on to further course specialisation.A key issue with PV systems is that they provide direct current (DC) voltage but to feed into the grid, the DC voltage has to be inverted to the grid alternating current (AC) voltage. This is enabled by a mains-commutated or grid-tied solar inverter, which automatically synchronises output to the exact AC voltage and frequency of the grid.The second key function of the solar power inverter is to control the PV system to run near its Maximum Power Point (MPP) - the operating point where the combined values of the current and voltage of the solar modules result in a maximum power output. During operation, MPP fluctuations occur in an interval depending on the radiation, cell temperature and cell type and it is essential to be tracked by the inverter controlling unit.It is vitally important for all the correct connections to be carefully made, checked and tested to prevent a major accident from overheating. Poor connections will also significantly reduce system efficiency leading to an increase in circuit losses, less power reaching the inverter and subsequently, payback period is also increased. There are reports from some completed PV installations, which indicate not enough care and attention was taken with fitting connections, or perhaps, the installers were neither properly trained and qualified to carry out the work to the required legal standard.While pre-fitted and pre-tested plug and play connections are already in common use on the DC side of PV installations, it must be remembered that not all types are equal and poor connections are still possible. Different manufactured brands can be of variable quality according to crimping orientation. Not least, is the problem of cost involved with purchasing quality connectors, which could be seen as affecting installer's margins!It should be noted however, that generally on the AC side, electrical installers of PV systems, will still be required to carry out hard wiring of connections from the solar inverter right through to the distribution board. Great care still needs to be taken with the number of connections running between the intermediary component units of AC isolator and the energy meter.