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- Nov 6, 2010
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Okay, this may knock a few chins off but I'm going to say it anyway.....
The idea that a firm can become MCS registered and then sub-contract an electrician to do the electrical works is, in my opinion, a mistake.
The more common route appears to be the man with a sales background. He employs some roofers and gets them to fit the panels. He then subs an electrician in to do the work - who invariably appears to insist on using 2.5mm cable. Between them, no one really has any idea about PV beyond mounting panels, plugging them all together, connecting them into an inverter (judging by some of the posts on this forum, usually unidentified and often reversed polarity - and obviously untested) and then switching on.
Judging by some of these forum posts again, no one appears to know how to match an inverter to an array either. Unless the array size happens to match one of the 'off the shelf' kits then some of these MCS accredited firms have no one on their staff that has a clue what to do. I can imagine there are plenty of inverters which are oversized, undersized or otherwise which have been installed at great cost to the customer. I'd be very interested to see how many arrays connected to TL inverters have been left floating. It also appears that mounting inverters to non-fire protected timber is a popular method of installation.
At any PV installation firm you need, in my strong opinion, an electrician at the top that knows the PV job inside out. If you don't have this then it is the customer that will lose out.
The MCS route is paperwork exercise and it hardly benefits the customer at all. The MCS inspection should be no different from the NICEIC inspection - the QS takes the inspector out to his jobs and the quality of the work is HIS responsibility. Anything else, frankly, should be considered a national embarassment.
The idea that a firm can become MCS registered and then sub-contract an electrician to do the electrical works is, in my opinion, a mistake.
The more common route appears to be the man with a sales background. He employs some roofers and gets them to fit the panels. He then subs an electrician in to do the work - who invariably appears to insist on using 2.5mm cable. Between them, no one really has any idea about PV beyond mounting panels, plugging them all together, connecting them into an inverter (judging by some of the posts on this forum, usually unidentified and often reversed polarity - and obviously untested) and then switching on.
Judging by some of these forum posts again, no one appears to know how to match an inverter to an array either. Unless the array size happens to match one of the 'off the shelf' kits then some of these MCS accredited firms have no one on their staff that has a clue what to do. I can imagine there are plenty of inverters which are oversized, undersized or otherwise which have been installed at great cost to the customer. I'd be very interested to see how many arrays connected to TL inverters have been left floating. It also appears that mounting inverters to non-fire protected timber is a popular method of installation.
At any PV installation firm you need, in my strong opinion, an electrician at the top that knows the PV job inside out. If you don't have this then it is the customer that will lose out.
The MCS route is paperwork exercise and it hardly benefits the customer at all. The MCS inspection should be no different from the NICEIC inspection - the QS takes the inspector out to his jobs and the quality of the work is HIS responsibility. Anything else, frankly, should be considered a national embarassment.