Quote:
Originally Posted by Synchrodyne
at least that would have been an opportune time to eliminate any imported less safe practices in respect of TV receivers before they became widespread.
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One irony of all this is that a hot chassis set is now for one reason safer than a transformer isolated one, to work on at least ! Because of the dwellings RCD's, which are now mandatory. But its a nuisance connecting test instruments.
The isolation provided by the power transformer in a supposed safer TV with a power transformer, isolates the dwelling's RCD, so you can get electrocuted working on the set, standing on ground and touching many of the high voltage connections in the set (its chassis earthed), with no RCD protection.
But in a hot chassis set, any significant currents from any of the high voltage circuits that don't go back via the neutral, and say pass through your body to ground, will trip the RCD. (assuming its working)