I think it will depend on what is being supplied. If there are some sort of appliances in use like say a cash machine then i would say yes. Like wise is the shopkeeper going to be doing any exterior maintenance using powertools, then yes again. Another consideration is does the shop have a residential part which shares the same supply as the shop, if so then part P applies. If not then its the EAW act which rules, so read up in the BRB for a difinitive answer. You will probably get some more informed replies than mine as well.
Nothing on the shop ................its one radial 4 strip lights & one ring 4 sockets (no power tools etc only stuff like kettle and cash til) blah blah !
Depends what kind of shop it is - in somewhere like Tesco or Carphone Warehouse where the staff are expressly forbidden from doing so much as changing a light bulb there may be no need for an rcd, but in somewhere like a family owned boutique or 2 bit barbers shop where the shopkeeper is likely to practically rebuild the place to save a bit of cash an rcd would be required.
If in doubt, rcd anyway.
We always put tills on seperate circuits in conduit or trunking on none rcd supply.Reason being if general circuits go down and rcd wont reset atleast they can still take cash.(How many pubs/shops ring us up in a panic is untrue when tills dont work)
In regards to the rest 17th still applies (skilled workers). If they have moveble displays or crapy string lights, you can bet you last pound they will move them about while still on! Not to sure about the point about living above because it depends on the licence the council give you to trade A1/A2. Hope that helps.
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