need help

[Reece]

Re: Isolation Transformers -- there is a dangerous shock potential existing between the hot side of the power line (the black wire, brass screw, shorter slot in a receptacle) and ground. If you're touching that line and some other part of your body is grounded, you complete a circuit and receive a shock, which could be fatal. With an isolation transformer, there is no direct connection between the secondary of the transformer and the primary, so the danger of a fatal shock between ground and a device plugged into this transformer is eliminated. Other precautions to be observed: rubber mat or dry wood floor (not bare concrete), rubber sole shoes, long pants (dropped solder burns!), and keep one hand in your back pocket when probing live chassis.