Wiring a board to fuse box??

[budolskie]

I want to wire a board to my fuse box for 8 lights and fan,
Im unsure what size fuse/rcd i will need to wire it to and what size wire to use...

Any help be great..

 

[GBAUTO]

Need some more info on the load.

 

[budolskie]

Need some more info on the load.

The load as in whats going into board?
Thanks for the bit help,
If so
8x600w
12" extraction..
I will use the sockets on wall for the oscillating fans and heater... hope this helps

 

[GBAUTO]

That looks like 5kW with the fan.
A 240v service will use just over 20A with everything running.
Because you're running a continuous load, I would derate the circuit by 1/3 so a 30A circuit would be needed.
10ga wire from the breaker to the board should work.

 

[budolskie]

That looks like 5kW with the fan.
A 240v service will use just over 20A with everything running.
Because you're running a continuous load, I would derate the circuit by 1/3 so a 30A circuit would be needed.
10ga wire from the breaker to the board should work.

Thanks For the help i will get a picture of the fuse box so i can get the right breaker for it

 

[GBAUTO]

You didn't mention what you're using for lighting, but you may need to divide the load with separate timers for 1/2 of the lights when the ballasts/drivers turn on.
Look at inrush current demands of your fixtures.
Firing up that load simultaneously could cause the magnetic interrupter in the breaker to trip.

 

[budolskie]

I would be using 8x600w hps and a 12" extraction fan in the board, here is the fuse box