400w halide lamp tripping mcb

[xr4x4]

Hello all,

Someone I know is having a problem with a bank of halide lamps tripping the mcbs.

There are 6 400w lamps, all on there own switches (6) feed from 6x 6amp mcbs. Feed on (what looks like 1.5mm) swa on single runs to each light.

All run from a star breaker with a rccb, this does not trip.

Randomly the mcbs trip when the lights are turned on one at a time from the switches. The mcb can be reset then work fine.

I don't know what type mcb they are.

What could be the problem? Could it be the start up current? Or faultly mcbs?

Thanks in advance.

 

[big-all]

turn them on in several different sequences to rule out the last one turned on is the problem

are you saying they are all on the same 6amp or separate 6amps each

 

[xr4x4]

turn them on in several different sequences to rule out the last one turned on is the problem

are you saying they are all on the same 6amp or separate 6amps each

separate 6 amp mcbs each.

when i was there with the guy when he was showning me, it did seem it was the same two that were going but he did say the others had gone too.

 

[ColJack]

what type are the breakers?
and what type of light?
400W low bays or outside street lighting type? ( presumably internal if they have switch banks and not timers / dusk sensors )

they have gear trays in them that mean they draw a fair bit when switched on and striking, so if they are on B type breakers it might be too much for them..
change to C type and see if that helps..

to clarify for myself you have 6 lights, each with their own switch and their own breaker?

 

[xr4x4]

what type are the breakers?
and what type of light?
400W low bays or outside street lighting type? ( presumably internal if they have switch banks and not timers / dusk sensors )

they have gear trays in them that mean they draw a fair bit when switched on and striking, so if they are on B type breakers it might be too much for them..
change to C type and see if that helps..

to clarify for myself you have 6 lights, each with their own switch and their own breaker?

dont know the breakers, im guessing type b, i will check.

outdoors type, they are for a outdoor arena.

6 lights, each with there own breaker and light switch, they are switched off and on when needed.

thanks for your help.