I have deleted my last post as I hope the explanation below gives a better account of the situation
I hope I have not mislead anybody via my posts above, Morgan123 is perfectly correct and the MCS scheme does require you to operate in a manner similar to ISO9001 ( which I think we all agree is a good thing???). in addition to this the company must show that a senior member of staff e.g Technical director has the ability to install the products ( this covers mounting the panels correctly) and design the electrical feeds & inverter section of the system ( this is nearly impossible without 17th edition and experience on site) in addition the technical representative must be able to show they can calculate wind loads etc. (basically give a good understanding of a working PV system).
If you have all this in place then you are capable of not only completing the installation to mcs standard but also of ensuring a system is installed to these standards which bring in the sub contractor section.
So for instance you are an M&E consultant looking to gain MCS to be able to check and ensure installation are to MCS standard and that your customers are eligible for MCS. so you gain your MCS by ensuring you have the following.
A high understanding of a Quality Management System which includes similar standards to ISO9001 but in addition have specific procedures for the product(s) you are working with. ( I got mine from easy mcs in chester)
Technical ability to complete the installation : ability to design, install and commission the system.
PROBLEM: Your technical director iS 50 years old and can't bend like he use to, what do you do????
You sub-contract in a fully qualified electrician carrying 17th etc and ask him to sign a sub contractor agreement form, this form must state that the installer will work to the standards set out in the relevant mcs standard (e.g MIS3002 ). Once he has completed the installation you as the MCS accredited company would asses the installation to ensure all the standards have been met. Once you are confident with that all the paperwork, design & installation are up to the standard you can apply for your assessment. they will check as you have that all the sections are up to standard.
Yes at this point you as the MCS accredited company have not physically screw a panel to the roof but doing this is not rocket science and you / the customer is safe in the knowledge that the system has been designed by an MCS approved installer which is specific to the technology they are having. and in addition to this a fully qualified spark has fitted the system into the grid so once again everybody feels alot more confident.
I don't want you to think just anybody could gain MCS, I can assure you that if you do not have the technical ability to do the installation then you will not gain MCS. But you can use sub contractors to en-sure work is done quickly and professionally but you as the technical rep will have to asses the installation for compliance and commission prior to logging onto the mcs list.
Ok, so with all this in mind we go back to using someone else's installation to gain your MCS, this covers the same rules as above you must have all the technical ability and professionalism to both complete the installation and document it correctly. you must prove this during your assessment by showing your calculations / certificates of training and competency etc. Once you can prove to the assessor you can cover all these sections and trust me you will be tested on it then you will be granted MCS. f they come back in twelve months time to audit you and you are not working to these standards you will have your MCS taken from you (I have seen this happen).
in conclusion yes you can gain MCS without actually fitting the equipment but you must prove you are capable of fitting the equipment if required.
sorry if this is not what you wanted to hear but I hope this helps people looking to get into mcs and doesn't rattler the cages of to many of you who are already MCS ( i am only stating the facts )