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Morning all,
I've been having a debate with someone I know who wants their summerhouse wiring up. The summer house is approx 25-30M from the CU in the house and they will want 2/3 x double sockets and 2 x lights (internal & external). The double sockets will power a small wine fridge/cooler, radio or sound bar, a neon sign and maybe one or two more small appliances that they're unsure of at the minute.
The debate is about the csa to feed the summerhouse. He said that there is a length of 2.5mm SWA 4 core that runs from the house to where the summerhouse is now, buried in a duct as it used to feed some sort of pump for a pond that was once there. He would like to reconnect the 2.5mm SWA to the CU in the house and then to the sockets in the summerhouse, and spur from them for the lighting.
I on the other hand believe that the feed should be upgraded to atleast a 4mm SWA from the CU in the house, to a small CU in the summerhouse, and take the final circuits from there. I just think that even if you were to connect the 2.5mm SWA to a CU in the summer house, that the CSA is just too small. Do you agree?
Although the latest edition of BS7671 says that the current carrying capacity of 2.5mm SWA is 29A direct in ground, the 37A for 4mm SWA just gives you that extra room.
I'd appreciate any advice and input on this one.
I've been having a debate with someone I know who wants their summerhouse wiring up. The summer house is approx 25-30M from the CU in the house and they will want 2/3 x double sockets and 2 x lights (internal & external). The double sockets will power a small wine fridge/cooler, radio or sound bar, a neon sign and maybe one or two more small appliances that they're unsure of at the minute.
The debate is about the csa to feed the summerhouse. He said that there is a length of 2.5mm SWA 4 core that runs from the house to where the summerhouse is now, buried in a duct as it used to feed some sort of pump for a pond that was once there. He would like to reconnect the 2.5mm SWA to the CU in the house and then to the sockets in the summerhouse, and spur from them for the lighting.
I on the other hand believe that the feed should be upgraded to atleast a 4mm SWA from the CU in the house, to a small CU in the summerhouse, and take the final circuits from there. I just think that even if you were to connect the 2.5mm SWA to a CU in the summer house, that the CSA is just too small. Do you agree?
Although the latest edition of BS7671 says that the current carrying capacity of 2.5mm SWA is 29A direct in ground, the 37A for 4mm SWA just gives you that extra room.
I'd appreciate any advice and input on this one.