I have just moved house and I have noted that the three outside lights keep blowing the blubs ,I noticed that one of the lights has the two others spured from it is this correct if not which is the better way of wiring .The power switch wire goes into this light

HELP ONE, July 2010

You do not say how often the lamps blow or what type of lamps they are - no matter.

The life of a tungsten filament lamp depends on the quality of the filament - you may be unlucky and have a bad batch or you may be using bargain-basement lamps. Extended Life lamps can be bought.

Thermal shock from repeated switching on and off will shorten the life of a lamp - there may be an intermittent bad connection in the circuit.

Over voltage will cause a lamp to fail sooner - but it is very probably not a factor in your situation.

The connection style may or may not be kosher but the lamps will neither know nor care - they just need mains voltage to turn on and how it's wired to them is of no consequence.

Peccavi, July 2010