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Economy 7 - historic wiring
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<blockquote data-quote="Mark56" data-source="post: 526518" data-attributes="member: 34997"><p>I rent out a 1989 era flat, all-electric. I am having trouble understanding what is going on with the wiring to the immersion heaters and what used to be a storage heater but is now a panel heater.</p><p></p><p>The hot tank has two immersion heaters, each with its own switch. </p><p></p><p>The meter supplying the flat is modern and has a digital display that shows two readings i.e. day and night. It has 2 x L coming out of it.</p><p></p><p>Am I right to think that back in the day there were two separate supplies, one for day and one for night? Perhaps with two meters, one for day and one for night, so that consumers could be billed for each?</p><p></p><p>However, now, with chips in the meters, the meter knows when it is day/OP and can store each reading without recourse to separate circuitry in the flat?</p><p></p><p>Doesn't it mean that any draw on any circuit will be rated low tariff if it is OP and at a higher rate when not OP? </p><p></p><p>Would there be two live cables coming from the meter because the two used to be required in the past but that they are not required now?</p><p></p><p>So, can I have the OP circuits removed and just have everything run from the CU without worry about losing the lower tariff?</p></blockquote><p></p>
[QUOTE="Mark56, post: 526518, member: 34997"] I rent out a 1989 era flat, all-electric. I am having trouble understanding what is going on with the wiring to the immersion heaters and what used to be a storage heater but is now a panel heater. The hot tank has two immersion heaters, each with its own switch. The meter supplying the flat is modern and has a digital display that shows two readings i.e. day and night. It has 2 x L coming out of it. Am I right to think that back in the day there were two separate supplies, one for day and one for night? Perhaps with two meters, one for day and one for night, so that consumers could be billed for each? However, now, with chips in the meters, the meter knows when it is day/OP and can store each reading without recourse to separate circuitry in the flat? Doesn't it mean that any draw on any circuit will be rated low tariff if it is OP and at a higher rate when not OP? Would there be two live cables coming from the meter because the two used to be required in the past but that they are not required now? So, can I have the OP circuits removed and just have everything run from the CU without worry about losing the lower tariff? [/QUOTE]
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