Christmas Tree Lighting

Christmas tree lighting is a type of Christmas lights in a Christmas tree. ==History[ Edit] == In 1882, the first electric lights made to a real Christmas tree. That was done by Edward Johnson, a colleague and friend of Thomas Edison.

To in the fifties of the 20th century, Christmas tree lighting generally conducted with candles in candles holders that were clamped on the Christmas tree branches. Due to fire risk, there was often a bucket of water or sand beside the Christmas tree. In some households this was until the 1970s (or even later) common and now they are still sold.

Starting from the 1950s came electric Christmas tree lights with small light bulbs with the form of candle flame and lamp holder in the form of a candle. Nowadays, there are very many variations in shape, length and color. The first cords typically contain 12 to 24 lamps, while modern cords often contain up to 200 miniature lights. Also at the Christmas lights, the led flashlight in vogue: in many colors available, uses less power and will last longer. ==Construction[ Edit] == A typical lighting cord usually consists of a circular wire with lights, whose beginning and end ends on a plug for a 230 V power outlet. This is safer than two separate contact plugs because in the latter case, there would be chance of electric shock if stung one of the plugs is in the voltage-carrying pool. The entire cord, including the loose plug, State at that time at a voltage of 230 V.

At most kerstboomverlichtingsnoeren are the lights switched in series . As a result, if one light goes out the whole cord basically dead and therefore unusable. At the more modern cord types with this problem has been overcome by large numbers of lights in each light to make a kortsluitverbindinkje that is within the glass body of the light between the support pins of the filament is. If a light wire burns out the main power supply whole over the falls at that time on aid pins, because by the fallen by the wayside power than the voltage drop over all other, still intact, become zero volt lights. The short-circuit wire acts than in effect because the lack of isolation between the support pins that metal object and the mains voltage not present than keep; the circuit is thereby closed again. Consequence may be that flow by the reduced number of functioning incandescent wires what increases, making the life expectancy of the remaining lights drops. Therefore, it makes sense to not burning lights to replace. It is for this reason recommended to before the lights in the tree hangs, this first to plug into the wall outlet to make sure all the lights still burning. In this way, any not burning lights be replaced immediately before you are going to use lighting. This is often one or more spare lights included with the cord. However, not many lights burn, then you better the whole cord discard and replace by a new cord. In this way you avoid much misery during the Christmas period, such as bv. short circuit with fire hazard as a result.