Electrical help required

[newsboy]

Hi all
i'm looking to install 10 x 150 watt metal halide fittings onto one C10 amp circuit breaker (7 amp loading). Could anyone tell me if this Mcb will hold in
cheers

 

[Bradzz]

Hi, could you show me how you come to your figure of 7 amps. cheers

 

[newsboy]

150 watt x 10 devided by 230 =6.521 amps

 

[mogga]

150w x 10 = 1500 w x 1.8 = 2700 / 230v = 11.74a Edited due to me not having brain turned on

 

[mogga]

Newboy your forgetting 1.8 correction factor m8

 

[newsboy]

carpark lighting
i could up the circuit breaker to a 16 amp type B the circuit is wired in 6mm
would this be sufficient with discharge lighting

 

[Bradzz]

Sorry mate figures are wrong me thinks.


150*10*1.8=2700/230=11.8 amps, so 16 amp braker.
Or 2* 6 amp brakers type c

 

[Bradzz]

Then you have to allow for voltage drop, whats the distance.

 

[BlueToBits]

It should hold in OK. A 10AC is better than a 16B. Just done something similar myself. 6x150w + 6x70w on a MEM 10A type3. We started out with 8x150w and 8x70w and this held in, but I was able to split some of the load onto another circuit.