Another emphasis is not powered wire design and selection . Early domestic projector's light source driving the vast majority of uses magnetic ballasts , power factor between 0.4 to 0.5 , although the overall power consumption is about 200W, but the actual machine current near the 2A, and some manufacturers logo vague words only identifies the machine power on the nameplate , if calculated according to the information identified in the low current will double the current election here diameter wire used in construction is very dangerous, especially dozens distribution over a large user during installation and after use .

 

Examples reality

 

    Song of the city in a few days after the opening , often tripping can not be closed until later , after inspection found that the bus has been seriously aging, many short circuit, no fires were lucky . Just decorate the walls , a new roof had to be gutted , surgery, only to spend money , but also delay the business . It is best to confirm or actual machine operating current , high-quality copper wire , wearing flame-retardant PVC pipe , metal pipe may be considered conditional , in accordance with the relevant national standards will air switches, leakage and other security devices to manufacturers in the wiring electrical eleven True .

 

    The projector is different from ordinary household appliances, there are both high temperature and high pressure , although not grounded projector can also work , but the ground is definitely not an option , a matter of safety. The projector uses a BNC cable from the grounding site has been required to lead , just follow the relevant national standards laid ground wire , three-hole socket correctly , the projector can be grounded installation. But also reduce or eliminate ground unexplained interference , improve the picture quality of magic.

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