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Solar Battery Cable


Caddy

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Not sure if this should be here or in electrics but anyway....

 

I'm getting a battery fitted soon and have been thinking about how the installers will get a cable to the CU from my preferred battery location.

 

Running along the outside of my house is difficult as it sits in a stream and they would need wellies and ladders and to drill through a 500mm wall, up a ladder and next to where the main feed into the house is located.

 

The other option is when I got the CU updated 12 months ago there was a 10mm cable from an electric shower in the bathroom. The shower was removed at the same time but I had them leave the cable in for potential future use. The rest of the cable is coiled in the loft. Can this cable be extended to reach the battery location? I'm happy for them to put an accessible enclosure of some kind in the loft for the joining but I'm sure this is non preferred option for sparks as it creates a point of weakness. Replacing the cable back to the CU from this location would be very difficult.

 

I'm not planning on doing any of this myself, just want to make them aware in advance of any possible problems. 

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3 hours ago, trialuser said:

Apologies if I'm being thick, genuine question, why would you connect a battery to a consumer unit?

Because it’s not just a battery, it’s an ac coupled battery.  Imagine a box with a battery, a battery mains charger and an inverter all linked by some clever software so that spare mains can charge it and it can help run the house or export to the network.  Inside the box is indeed dc connections to the battery. 

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You're best option is probably to have a small CU which is fed by the 10mm old shower cable, as you'll only need 16A MCB for the battery, and the appropriate cable, gives the option of running other loads on separate circuits from this additional CU

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19 hours ago, G and J said:

Because it’s not just a battery, it’s an ac coupled battery.  Imagine a box with a battery, a battery mains charger and an inverter all linked by some clever software so that spare mains can charge it and it can help run the house or export to the network.  Inside the box is indeed dc connections to the battery. 

Cheers

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