Re: Electrical, Help me Guys, Figure Out Chain of Events
- From: Mark Rand <randm@xxxxxxxxxxxxxxxxx>
- Date: Sun, 27 May 2007 15:17:18 +0100
On 27 May 2007 05:25:16 -0700, mark <aboard_epsilon@xxxxxxxxx> wrote:
My theory says that the wires leading out of this terminal block were
never tight enough and arced and melted it ...
It is likely that the either the screw walked loose as a result of repeated
heating and cooling cycles or that the wires relaxed a bit from the same
cause. These are problems with chocolate block connections that are run warm
or with reasonable currents. After replacing it, run things for a while
(week/month/6 months depending on use), then re-tighten the connections.
Now even when I turn the compressor on the RCD trips ........
The RCD may have been sensitised at some point, or there may still be earth
leakage from somewhere else. Is the converter isolated from the mains by
pulling out a plug or a double pole switch? If not, then the neutral is
probably still leaking to ground and using up most of the leakage current that
the RCD is designed to sense, thus making it respond to the slightest bit
extra from other things. Motors and immersion heaters often have a bit of a
leak when they first get going :-)
Do you think my RCD has buggered up by the fault above ......and there
isn't anything wrong with my water heater of compressor .
Not unless fixing the converter doesn't cure the problem.
Should I fix the converter By substituting terminal block and get a
new RCD.
Change the terminal block as a matter of course. Then see if the spurious
trips have gone away. Or, as a short term expedient:-
1) Tighten the chocolate block contact screws if they aren't completely
buggered.
2) Unscrew the block from the autotransformer.
3) Cut the three sections apart.
4) Tape the individual sections up.
5) Rest them on the transformer on a bit of wood to stop the tape from getting
too hot.
6) See if the problem has gone away.
regards
Mark Rand
RTFM
.
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