goodman123 0 Report post Posted November 12, 2009 I realised that above all the water heater or storage heater... from the cable/wire out from the heater it would go to a box. Could anyone help me whats the purpose of this box. Thanks. Secondly, for those bros or sister that had asked their electrican to pull a SCV point to their MBR or other room, is there any drop in the quality of the display when you watch the TV channel??? Is there anyway to check whether the SCV signal is it strong when it was pulled to the room/master bedroom since our house is undergoing renovation. please advise. thanks Share this post Link to post Share on other sites