Ask The Trades - LED lights causing fuse trip out.

Welcome, Guest. Please Login or Register

	Dec 30^th, 2025, 11:12pm
View recently thanked users View top thanked users

Quote: A conscience is what hurts when all your other parts feel so good.

Ask The Trades › DIY Forum › Electrical Questions › LED lights causing fuse trip out.

(Moderator: Lectrician) - (Moderator Group: Board Moderator)

< Previous Topic | Next Topic >

Pages: 1

LED lights causing fuse trip out. (Read 6893 times)

Strum GDPR opt-out	LED lights causing fuse trip out. Sep 9^th, 2011, 9:41am Hi I have 4x50W halogen spotlights in my kitchen. Replacing them with 4x4W (= to 50W each) causes the lighting circuit breaker on the fuseboard to trip out. It's ok replacing one bulb but with 2, 3 or 4 LED's in, it trips. Please someone tell me why
Back to top	IP Logged

big_all Global Moderator Trade Member Author Offline heeelllooo Posts: 5596 Total Thanks: 10 For This Post: 0 Gender: Trade: Joiner	Re: LED lights causing fuse trip out. Reply #1 - Sep 9^th, 2011, 11:30am heeelllooo strum and welcome i am no expert but some transformers need to be matched to the load so removing 90% off the load may be the problem ??
Back to top	« Last Edit: Sep 9^th, 2011, 11:31am by big_all » big all --------------- we are all still learning IP Logged

CWatters

Super Member

Offline

"Daddy fick it" says James

Posts: 5150

Total Thanks: 58
For This Post: 0

Gender: male

Re: LED lights causing fuse trip out.
Reply #2 - Sep 12^th, 2011, 11:04pm

One faulty LED?

big_all wrote on Sep 9^th, 2011, 11:30am:

some transformers need to be matched to the load so removing 90% off the load may be the problem ??

That applies to some electronic transformers but not ordinary wound transformers. Which sort do you have? As a test try it with two halogen and no LEDs (eg two empty sockets). If that trips then it's probably this problem.

« Last Edit: Sep 12^th, 2011, 11:09pm by CWatters »

IP Logged

Lectrician Administrator Trade Member Author Offline Ask The Trades Posts: 8815 Total Thanks: 109 For This Post: 0 Braunton, North Devon United Kingdom Gender: Trade: Electrician	Re: LED lights causing fuse trip out. Reply #3 - Sep 13^th, 2011, 6:55am 12v LED's are available, but rare. I suspect these are more likely 240v? I would say check each LED lamp in isolation to make sure you do not have a faulty one.
Back to top	Need to post a picture? Click HERE for info! IP Logged

wozzy Trade Member Offline Ask The Trades Posts: 584 Total Thanks: 4 For This Post: 0 Gender: Trade: Electrician	Re: LED lights causing fuse trip out. Reply #4 - Sep 16^th, 2011, 5:57pm The LED fittings I use state the maximum that can be used for a type B and C breaker, although I would have thought four would be fine!!
Back to top	All advice is at least two years out of date. IP Logged

CWatters Super Member Offline "Daddy fick it" says James Posts: 5150 Total Thanks: 58 For This Post: 0 Gender:	Re: LED lights causing fuse trip out. Reply #5 - Sep 16^th, 2011, 9:25pm Interesting. What are the limits and why? Why does the number depend on the MCB type?
Back to top	« Last Edit: Sep 16^th, 2011, 9:27pm by CWatters » IP Logged

wozzy Trade Member Offline Ask The Trades Posts: 584 Total Thanks: 4 For This Post: 0 Gender: Trade: Electrician	Re: LED lights causing fuse trip out. Reply #6 - Sep 18^th, 2011, 4:07pm Inrush currents caused by the drivers I believe, I will try to track down some instructions. As I said before doubt its the problem in this case.
Back to top	All advice is at least two years out of date. IP Logged

Pages: 1

(Moderator: Lectrician) - (Moderator Group: Board Moderator)

< Previous Topic | Next Topic >

Ask The Trades › DIY Forum › Electrical Questions › LED lights causing fuse trip out.