new garage
- Thread starter nik40a
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B
breezer
you should connect your swa to a spare way on your cu.(i assume you have one?)
its easiest to terminate your swa into a metal box, since most modern cu are palstic
its easiest to terminate your swa into a metal box, since most modern cu are palstic
B
breezer
no need for isolator, since the mcb, you connect it to will isolate it.
the metal box is there so the swa will not twist/ buckle the plastic cu.
obviously you must connect the earth
the metal box is there so the swa will not twist/ buckle the plastic cu.
obviously you must connect the earth
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note that mcbs only give single pole isolation
so a seperate double pole isolator is advisable ESPECIALLY if you are using the rcd side of the CU (which i don't reccomend)
my personal advice is to go from a mcb in the non-rcd side of the CU to a seperate RCD in a metal modular box and then to a metal switch only CU in the outbuilding
there is some controversy over which end fo the cable to put the rcd protection at i personally reccomend putting it at the house and but there are good arguments for both methods
so a seperate double pole isolator is advisable ESPECIALLY if you are using the rcd side of the CU (which i don't reccomend)
my personal advice is to go from a mcb in the non-rcd side of the CU to a seperate RCD in a metal modular box and then to a metal switch only CU in the outbuilding
there is some controversy over which end fo the cable to put the rcd protection at i personally reccomend putting it at the house and but there are good arguments for both methods
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Use a through conduit box (galv) to connect the SWA to. Make the tails long enough to reach where they are going to. Then bond the galv box to the earth terminal.
I put an RCD on both ends of the cable. A 100mA at the supply end to protect the cable, and a 30mA at the garage end to protect the final circuits.
I put an RCD on both ends of the cable. A 100mA at the supply end to protect the cable, and a 30mA at the garage end to protect the final circuits.
I personally think 2 is OTT.
I prefer one at the garage end (30mA). Relying on EEBADS to disconnect the armoured supply cable is compliant. I can see where Plugwash comes from, as protection to the armoured cable by an RCD can lok favourable if you have a keen gardener!!
I prefer one at the garage end (30mA). Relying on EEBADS to disconnect the armoured supply cable is compliant. I can see where Plugwash comes from, as protection to the armoured cable by an RCD can lok favourable if you have a keen gardener!!
with two rcds unless the one at the house is time delay (cost++) they will most likely just trip together which rather negates the point in putting the rcd at the shed end in the first place.
the main reason i advise at the house end is because im not sure how well the diyer will manage to gland the SWA i always reccomend 3 core for basically the same reason
the main reason i advise at the house end is because im not sure how well the diyer will manage to gland the SWA i always reccomend 3 core for basically the same reason
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