Why do when I switch on some electrical appliances seem to trip the power circuit ?

Most common reasons for a fuse board tripping
This probably means you either have a faulty appliance or an electrical fault.Check the appliance that you suspect on another power outlet.If it trips the breaker again,you can be sure that the electrical circuit of the appliance causing the circuit breaker tripping.Remove the power connection for the appliance and call a technician to check and repair the faulty appliance.
In case the circuit breaker is not tripping when you connect the appliance to a differrent power outlet,it means you have an electrical fault.Its better to call a qualified electrician all ways for any kind of electrical repairs for your home or office.
Dubai maintenance have qualified and experienced electricians to handle all your electrical repairs in Dubai.