CU Change for PV install 5% VAT?

[malcolmsanford]

The max on a 30mA is 1667 as per Regs, any reading over 200 ohms should be considered to be unstable in different ground conditions, this is not a Reg though, just a good practice guideline.

Think Darren you will find it is. Though the value is only a note as such it does refer you to a further regulation and IMO the value should be lower more in line with the BS 7430, but for our regs the key word is stability.

 

[moggy1968]

Anything over (or actually close to) 200Ohms I would probably replace the spike. while 200 is the threshold if your close to it then under different conditions (a dry hot summer) it will probably be worse.

2 questions.
1. will your total demand exceed 63amps, answer no
2. In the event of a fault which will melt first, a 16mm cable or a fuse of less than 1mm, answer, the fuse.
Tell your assessor that 16mm tales are fine on a garage board!! As is unfortunately often the case NICEIC like to offer their own, incorrect, interpretation of things!

 

[infinity]

If your not VAT registered do you pay the full 20% and pas the cost onto the customer or somehow get the 15% back??

 

[moggy1968]

Solar is one of the few occasions when you are better off being registered even if you don't meet the threshold.

Lets say you buy a kit for £10000. you pay VAT at 20% so you pay £12000
now lets say you sell that kit to your customer for £16000 at 5% vat thats £800
so you have a liability of £800 VAT, but can claim £2000, so net gain is £1200 from the tax man, I thank you!!