Hello folks,
Been to look at a house today where lamps are blowing 2-3 times per week. Though she may be exaggerating a lil!
Lamps in question are both on lighting ccts and on 3A plug tops. Have checked some of the switches and lamp holder terminals of affected fittings and are seemingly ok.
Thought vibration may be an issue but some fittings unlikely to suffer from that. Cust had a mix of cheap and Philips (branded) lamps; both blew at same rate....ish... Told her that GU10s are often carp and can blow a lot. Though most of the fittings affected have good old incandescents
A couple of fittings may have issues with heat dispersion due to 'tight' diffusers. But the plug top lamps have ample room.
Cust also said her 13 month old TV went kaput recently. Apparently the power-pack was buglered and the spark/technician said he had never seen anything like it.
Me not being au fait with electronics so much, am wandering if the power-pack issue could be indicative of overvoltage on the supply, and this maybe the cause of the problem.
Incoming voltage a little high at 249V (measured 5 times over a 40 min period). Going to pop back tomorrow to see if any change in that.
Out of curiosity, have many of you measured domestic supplies at much above the 253V limit. And how do DNO's turn it down; is it at the sub or is it done remotely..
Any thoughts/help/comments appreciated.
Ta
Been to look at a house today where lamps are blowing 2-3 times per week. Though she may be exaggerating a lil!
Lamps in question are both on lighting ccts and on 3A plug tops. Have checked some of the switches and lamp holder terminals of affected fittings and are seemingly ok.
Thought vibration may be an issue but some fittings unlikely to suffer from that. Cust had a mix of cheap and Philips (branded) lamps; both blew at same rate....ish... Told her that GU10s are often carp and can blow a lot. Though most of the fittings affected have good old incandescents
A couple of fittings may have issues with heat dispersion due to 'tight' diffusers. But the plug top lamps have ample room.
Cust also said her 13 month old TV went kaput recently. Apparently the power-pack was buglered and the spark/technician said he had never seen anything like it.
Me not being au fait with electronics so much, am wandering if the power-pack issue could be indicative of overvoltage on the supply, and this maybe the cause of the problem.
Incoming voltage a little high at 249V (measured 5 times over a 40 min period). Going to pop back tomorrow to see if any change in that.
Out of curiosity, have many of you measured domestic supplies at much above the 253V limit. And how do DNO's turn it down; is it at the sub or is it done remotely..
Any thoughts/help/comments appreciated.
Ta