Quick electrical question
Discussion
Friend of mine has a shop with ceiling panels and square 4 way flourescent fittings and we swapped them out for JC led panels.
There are about 15 in place now and every time he switches them on the circuit trips in the fuse box.
If he resets it they seems to then stay on.
This keeps happening and I read that led can have a high start power which can cause this to happen?
Is there an easy way to solve this?
Someone mentioned getting someone in to change the fuse breaker to a C model or a 10amp b model
There are about 15 in place now and every time he switches them on the circuit trips in the fuse box.
If he resets it they seems to then stay on.
This keeps happening and I read that led can have a high start power which can cause this to happen?
Is there an easy way to solve this?
Someone mentioned getting someone in to change the fuse breaker to a C model or a 10amp b model
It is the circuit breaker and it’s a b6(?)
He dug out the invoice and its these...
https://jcc.co.uk/products/jc080218
He dug out the invoice and its these...
https://jcc.co.uk/products/jc080218
Edited by 119 on Wednesday 9th April 08:11
Thanks all.
No there is no dimmer on any of them as it’s for a shop and there is no need to dim them.
The set up is, a main switch by the door that turns off all the lights and a selection of sockets and this controls a big contact switch?
There are around 25 lights in total, and it’s actually 18 on one mcb circuit and 8 on another mcb circuit.
The one with 8 is fine but the other one is the one that trips.
No there is no dimmer on any of them as it’s for a shop and there is no need to dim them.
The set up is, a main switch by the door that turns off all the lights and a selection of sockets and this controls a big contact switch?
There are around 25 lights in total, and it’s actually 18 on one mcb circuit and 8 on another mcb circuit.
The one with 8 is fine but the other one is the one that trips.
megaphone said:
So the circuit is on a contactor? That could be causing an issue when it activates.
Contactor that’s it.So, just found that the whole separate fuse box with these lights and other sockets is controlled by the contactor.
ie the mains cables to feed the fuse box are fed from this contactor.
If that makes sense
As for rewiring, possibly but the mess of cables above the ceiling is quite staggering and it may be tricky to see which cables are which!
He has ordered 2 x C6 mcbs to try but he can do that.
Soooooo dragging this back.
I haven’t seen him for a while and caught up with him today.
Turns out the c6 breakers aren’t any good either as they still trip but not as often.
I just re visited the replies so I suggested he should look at fitting d type?
Or should he try maybe a c10?
Thanks again all
I haven’t seen him for a while and caught up with him today.
Turns out the c6 breakers aren’t any good either as they still trip but not as often.
I just re visited the replies so I suggested he should look at fitting d type?
Or should he try maybe a c10?
Thanks again all
Belle427 said:
I have never seen D type mcbs on commercial lighting circuits, C maybe yes.
There are safety implications of changing the tripping characteristics, Im not clever enough to explain it to you but a quick google will help you.
Best seek professional advice.
Me neither, I would say they're specifically for "motor" loads and nothing else.There are safety implications of changing the tripping characteristics, Im not clever enough to explain it to you but a quick google will help you.
Best seek professional advice.
Type A: Trips at 2–3 times the rated current. This type is very sensitive and used for sensitive electronic equipment, but it is not recommended for motor circuits.
Type B: Trips at 3–5 times the rated current. This is the most common type for residential use and is suitable for resistive loads like lighting and standard outlets.
Type C: Trips at 5–10 times the rated current. This type is used for commercial and industrial applications with higher inrush currents, such as fluorescent lighting and motors.
Type D: Trips at 10–20 times the rated current. This type is designed for circuits with very high starting currents, such as large motors, X-ray machines, and welding equipment.
Type B: Trips at 3–5 times the rated current. This is the most common type for residential use and is suitable for resistive loads like lighting and standard outlets.
Type C: Trips at 5–10 times the rated current. This type is used for commercial and industrial applications with higher inrush currents, such as fluorescent lighting and motors.
Type D: Trips at 10–20 times the rated current. This type is designed for circuits with very high starting currents, such as large motors, X-ray machines, and welding equipment.
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