w_tom wrote:
On Feb 19, 12:11 am, "NetKev" wrote:

Hi, no my fridge and microwave don't cause the lights to dim. In the
bathroom, the hair dryer does cause the lights to dim but only in that
room.


UPS will only cure symptoms. Worse, many UPSes in battery backup
mode output electricity so 'dirty' as to harm some small electric
motors - such as those inside a laser printer.

Those lights are dimming because wires have loose connections. The
fact that some appliances cause dimming and other don't helps to
locate a connection failure. Age of wires make no difference. Either
connection of wires is completely good OR that connection is bad and
causing dimming.

If wires enter wall receptacles in rear, then that could be reason
for defective connections. Simply remove cover plate to look inside.
Wire must be fully wrapped around screw on side of receptacle.

Not only might some lights dim. Other lights may brighten. Which
do and don't? Well, basic facts such as what outlets share common
circuits, which on same side (phase) and different side of AC electric
mains box, etc - these facts will be necessary to answer your
question.

A UPS is a fool's solution - a classic example of curing symptoms.
The dimming could, remotely, be an indication of a human safety
problem. Why then would you cure symptoms? Find and fix the problem.

Hi,
UPS comes in many shapes and forms. Battery, CVT, Invertor, Electronic
regulator, etc.