I know I'm being quite ambitious here but I want to install a number of outdoor circuits (I would probably need to remortgage to get this lot done by a pro):
1. 20-30 decking lights 12V with outdoor transformer, 3-4 pond lights 12V with outdoor transformer and a set of 300-400 outdoor fairy lights 240v.
Probably no more than 100W in total and I want to be able to switch these all on from a light switch inside the house.
2. A 500W 240V security light with separate indoor switch.
3. Pond pump and UV filter (100W 240V) on 24 hours a day.
4. A 240V diverter valve connected to an indoor timer which will divert the water to a waterfall during the day but directly into the pond at night.
5. Two double outdoor sockets which can also be switched off from inside the house.
6. Four 1300W 240V halogen patio heaters connected in pairs to two Horstmann E30 Electrisaver timers.
I know this lot will need to be protected by a 30mA RCD. Should each circuit have its own MCB or could a few circuits run off one MCB? What rating should each MCB have? - I have a pretty good idea but would like confirmation. I have 2 spare fuseways on the CU but the CU is not RCD protected so do I get a 2nd CU with RCD and connect it to a spare fuseway on the main CU or replace the existing CU for a split load CU?
No cable run will be more than 15 metres and no cables will be buried - they will either go through the wall from inside straight into the appliance or socket box or will be attached to the wall or the underside of the decking. What size cables do I need to use? Will 4mm be sufficient for the heaters, 2.5mm for the sockets, 1.5mm for everything else? Do I have to use SWA outside or will T&E in conduit be fine? Hope somebody can help - I just don't seem to be able to find much info on outdoor electrics.
Thanks.
1. 20-30 decking lights 12V with outdoor transformer, 3-4 pond lights 12V with outdoor transformer and a set of 300-400 outdoor fairy lights 240v.
Probably no more than 100W in total and I want to be able to switch these all on from a light switch inside the house.
2. A 500W 240V security light with separate indoor switch.
3. Pond pump and UV filter (100W 240V) on 24 hours a day.
4. A 240V diverter valve connected to an indoor timer which will divert the water to a waterfall during the day but directly into the pond at night.
5. Two double outdoor sockets which can also be switched off from inside the house.
6. Four 1300W 240V halogen patio heaters connected in pairs to two Horstmann E30 Electrisaver timers.
I know this lot will need to be protected by a 30mA RCD. Should each circuit have its own MCB or could a few circuits run off one MCB? What rating should each MCB have? - I have a pretty good idea but would like confirmation. I have 2 spare fuseways on the CU but the CU is not RCD protected so do I get a 2nd CU with RCD and connect it to a spare fuseway on the main CU or replace the existing CU for a split load CU?
No cable run will be more than 15 metres and no cables will be buried - they will either go through the wall from inside straight into the appliance or socket box or will be attached to the wall or the underside of the decking. What size cables do I need to use? Will 4mm be sufficient for the heaters, 2.5mm for the sockets, 1.5mm for everything else? Do I have to use SWA outside or will T&E in conduit be fine? Hope somebody can help - I just don't seem to be able to find much info on outdoor electrics.
Thanks.