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davelittlewood
House build in mid 80's
Single Phase 240V installation with main supply board in exterior wall enclosure.
CU mounted in downstairs toilet in the middle of the house. Main tails length in excess of 7m.
1) During the installation of the house alarm the alarm fitter (Qualified Electrician) commented that the main tails to the CU were small.
2) If the cooker and extractor fan are running and then the kettle is turned on then the fan speed noticeably drops.
I have measured the drop in pd at the CU (21:30 tonight).
With almost no load = 242V
With ~4kW load = 237V.
(I guess that grid pd is up now as it's catching up with Sunday lunch load!)
Is a drop in 5V across the tails something that needs attention?
I'm well aware of Part P so I'd get a Qualified Electrician to actually replace the tails if needed.
Just looking for some advice.
With a drop of 5V across the tails, the power consumed is about 85W.
Any help appreciated.
Cheers,
Dave
Single Phase 240V installation with main supply board in exterior wall enclosure.
CU mounted in downstairs toilet in the middle of the house. Main tails length in excess of 7m.
1) During the installation of the house alarm the alarm fitter (Qualified Electrician) commented that the main tails to the CU were small.
2) If the cooker and extractor fan are running and then the kettle is turned on then the fan speed noticeably drops.
I have measured the drop in pd at the CU (21:30 tonight).
With almost no load = 242V
With ~4kW load = 237V.
(I guess that grid pd is up now as it's catching up with Sunday lunch load!)
Is a drop in 5V across the tails something that needs attention?
I'm well aware of Part P so I'd get a Qualified Electrician to actually replace the tails if needed.
Just looking for some advice.
With a drop of 5V across the tails, the power consumed is about 85W.
Any help appreciated.
Cheers,
Dave