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The problem with VDSL is the frequencies used are far higher together with the potential for EMC. A twisted pair is far from an ideal carrier. There is also the problem that there is a lot of BT overhead lines these pose even more risks with VDSL.
Almost all LV power cables are underground and have a pretty effective mesh earth screen. The biggest issue with power lines is not that they are not twisted but that they are unterminated. This presented some intersting challanges in how to deal with the potential risk of emc and to achieve efficient load balancing
New techniques and filtering methods though have now removed these problem.
Almost all LV power cables are underground and have a pretty effective mesh earth screen. The biggest issue with power lines is not that they are not twisted but that they are unterminated. This presented some intersting challanges in how to deal with the potential risk of emc and to achieve efficient load balancing
New techniques and filtering methods though have now removed these problem.























