An Isolation Transformer should only be used as a last resort where the equipment identified by the SeaBis System as causing electrolysis cannot be electrically isolated from both DC positive and negative and must be used. To avoid the lethal risk associated with an isolation transformer, see the warnings, below :
Fit the SeaBis System - its the most economic way for you to protect your vessel.
NB: A qualified electrician MUST check the vessels AC This is absolutely important. An Isolation Transformer breaks the safety connection with Earth and DC ( battery ) connection with Neutral and Active. The Electrician MUST ensure adequate safety devices are permanently fitted to the vessel and proven operational, before using an Isolation Transformer.
An Isolation Transformer, properly constructed*, will break the DC (battery) path via the shore mains connection to other vessels. It will not break the path via the water to the seabed, other vessels and mooring.
An Isolation Transformer, should only be used as a last resort where the equipment identified by the SeaBis System as causing electrolysis, cannot be electrically isolated from both DC positive and negative and must be connected.
This Isolating Transformer is rated at 2.2 amps, 500VA. Weight 6.5Kg.
With fuse in a ventilated metal container, handle and power cable.
One transformer will power a computer or small TV and a mast head antenna with a maximum total power rating of 2 amps or 500VA or 528 watts. (A kettle draws 2500VA or 2640 watts)
*Properly constructed: The Isolation Transformer MUST break the DC path through (shore) mains supply Earth, Neutral and Active. So will stop electrolysis through the shore power. A Electrolysis Blocker only breaks the mains Earth leaving the Neutral and Active as complete DC paths. So the Electrolysis Blocker, sometimes termed Galvanic Blocker, has is no benefit whatsoever.