Ansell 70w metal halide

[jam2020]

Hi Guys,

just put up 6 70w ansell metal halide fittings. 1.5 t+e 6 amp mcb 40a Rcd main switch (423wx1.8=761w/230=3.3amp) . They tripped straight away. IR test all ok, has anyone else had tripping when they start up? Contactor maybe? lose the RCD?

 

[Jimsparky]

The mcb or the rcd ?

 

[jam2020]

Possibly need a c type breaker?

 

[telectrix]

if it's the mcb tripping, fit a 10A type C.

 

[jam2020]

RCD tripping.

 

[i=p/u]

I used a contactor and worked a treat , no returns in about 7 months

 

[silverfox1]

Hi I think you may well find operating current nearer to 1amp per fitting from the specs of 70w metal halide fittings I have looked at, try 3 fittings and put clamp meter on the circuit.

 

[i=p/u]

IR cables

 

[jam2020]

IR is fine, im thinking 10a c type and a contactor. and if that doesnt work ill shout at it until it does

 

[jam2020]

Lose the RCD?

 

[i=p/u]

No try a c type on its own first

 

[jam2020]

OK ill go 10a c type first then contactor if its still playing up. Cheers everyone.

 

[i=p/u]

I was told to use a contactor by mr spark but a c could cure it

 

[jam2020]

MR Spark?

 

[Brightspark2]

No try a c type on its own first

But its the RCD thats tripping?...

 

[jam2020]

yes RCD wont engage. done a complete set of tests on it all acceptable

 

[ferg]

You could try testing the rcd without a load connected.
If all is well then re-test the cct.

HTH

Ferg

 

[jam2020]

thats how i have done the rcd test, disconnected the load or it wouldnt engage

 

[Brightspark2]

Changing the B to a C wouldnt effect the RCD tripping then...