high resistance on lighting circuit

[sammyg]

today i went to fix a lighting circuit that a screw had been put through i measured the resistance of the circuit and it was very high, the display said 39.0 ohms. after troubleshooting the system i could not find any faults and replaced some the the cables however the resistance did not drop. the system had an old 1950's wooden MEM fusebox so was not very well protected.

 

[Manator]

I would suggest that after troubleshooting you have failed to find the faults, and now have hit the internet to see if anyone can diagnose your problem?

 

[apprentice87]

What you mean you measured the resistance of the circuit?? Measured the resistance of the bulb i expect!

john..

 

[Andy™]

so you dont know how to fault find and you just went with replacing random bits of cable and hoping the fault would go away? i hope you were not charging your customer for this

so where exactly did this 39 ohms come from?

 

[Adrian]

Why are you lot ripping into him, a nice welcome would be nice for a change I would expect better from a moderator

 

[ProDave]

It's no good saying "i measured the resistance of the circuit and it was very high, the display said 39.0 ohms"

As Apprenticer 87 has already said, that vould be the resistance of the lamp and be a perfectly correct reading.

Tell us more about what you were measuring from where to where, and what you think the reading should have been, and you might get more constructive answers.

I assume as a minimum you replaced the bit of cable that had the screw through it?

 

[Manator]

Why are you lot ripping into him, a nice welcome would be nice for a change I would expect better from a moderator

Today I went to fix a problem at the local nuclear plant, reactor one was showing a high temp reading, I replaced the old water with new but the temp did not go down.

Expect what you want, but as a moderator I am appalled at the question, from someone who was trusted to find the solution.

 

[Andy™]

Why are you lot ripping into him, a nice welcome would be nice for a change I would expect better from a moderator

how would you feel if you didnt know anything about electrics, and you had him at your house today 'fixing' your lights?

 

[Sharpend]

Sorry Adrian but our esteemed colleagues here are quite right to be upset by the post and the posters electrical knowledge for which he charges. 

Would say that if a diyer had openly asked the question then the responses would have been more assisting, for they are not to know. 

 

[ProDave]

Sorry Adrian but our esteemed colleagues here are quite right to be upset by the post and the posters electrical knowledge for which he charges. 

Would say that if a diyer had openly asked the question then the responses would have been more assisting, for they are not to know. 

Yes, if he said I know nothing about electrics and I'm trying to fix my lights, here's the reading I got, can you help me understand it.

It's the "I went to fix a light circuit" bit that rang alarm bells that he is charging customers for work he is not qualified to do.

 

[Murdoch]

Yes, if he said I know nothing about electrics and I'm trying to fix my lights, here's the reading I got, can you help me understand it.

It's the "I went to fix a light circuit" bit that rang alarm bells that he is charging customers for work he is not COMPETENT to do.

corrected that for you.

 

[steptoe]

corrected that for you.

Ye,

He is probably PartP qualified, :|

 

[Lusk]

It's the "I went to fix a light circuit" bit that rang alarm bells that he is charging customers for work he is not skilled (electrically) to do.

Re- corrected for you! :slap

 

[binky]

enough now.

 

[ProDave]

Yes, if he said I know nothing about electrics and I'm trying to fix my lights, here's the reading I got, can you help me understand it.

It's the "I went to fix a light circuit" bit that rang alarm bells that he is charging customers for work he is too dumb to do

Better?

 

[Rob_the_rich]

OP doesn't mention charging anything for fixing/troubleshooting the problem. Could have been a favour for a neighbour or a relative. Nothing written in the profile either and only 1 post.

today i went to fix a lighting circuit that a screw had been put through i measured the resistance of the circuit and it was very high, the display said 39.0 ohms. after troubleshooting the system i could not find any faults and replaced some the the cables however the resistance did not drop. the system had an old 1950's wooden MEM fusebox so was not very well protected.

 

[sammyg]

i have fixed to problem now, the cable after an insulation test needed replacing now back to normal. BTW this job was for myself and was not charged 

 

[sammyg]

I have fixed it now, it was me being silly. the lighting circuit had a time switch on it so that was the cause of the high resistance and not the cable, BTW this job was actually at our own house and was not charged

 

[Manator]

Thanks for letting us know sammyg