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Do-It-Yourself (DIY) Question & Answer Forum
E7 with 2 meters (on/off peak), but current only goes through one?
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<blockquote data-quote="ProDave" data-source="post: 474567" data-attributes="member: 6969"><p>Your wiring diagram does not make sense.</p><p></p><p>Where is the electric boiler connected, to the main day meter, or the off peak meter via the teleswitch? the "Wylex main disconnector" appear to have off peak L and peak L into the top and only 1 out of the bottom, so it is connected to one or the other, which one?</p><p></p><p>That is not "economy 7" that is the old white meter system that preceded it. With the whit meter system, only the off peak circuits get billed at the low rate at night. With E7 or E10 it all runs through a single dual rate meter and the whole house gets billed at the cheap rate at night.</p><p></p><p>The easiest way to sort out the issue is to "upgrade" to E7 or E10 and all the metering will be replaced with one new dual rate meter with the teleswitch built in.</p><p></p><p>That type of storage boiler cannot store enough to heat a whole house just on E7 so I suspect it has been connected to the direct supply as the only way it will work.</p><p></p><p>For that sort of heater, I would have it on an E10 supply. That gives 10 hours of cheap rate, but not all in one go overnight, you get an early morning, mid afternoon, and late eveninig off peak period, so the storage boiler does not have to store it's heat for so long.</p></blockquote><p></p>
[QUOTE="ProDave, post: 474567, member: 6969"] Your wiring diagram does not make sense. Where is the electric boiler connected, to the main day meter, or the off peak meter via the teleswitch? the "Wylex main disconnector" appear to have off peak L and peak L into the top and only 1 out of the bottom, so it is connected to one or the other, which one? That is not "economy 7" that is the old white meter system that preceded it. With the whit meter system, only the off peak circuits get billed at the low rate at night. With E7 or E10 it all runs through a single dual rate meter and the whole house gets billed at the cheap rate at night. The easiest way to sort out the issue is to "upgrade" to E7 or E10 and all the metering will be replaced with one new dual rate meter with the teleswitch built in. That type of storage boiler cannot store enough to heat a whole house just on E7 so I suspect it has been connected to the direct supply as the only way it will work. For that sort of heater, I would have it on an E10 supply. That gives 10 hours of cheap rate, but not all in one go overnight, you get an early morning, mid afternoon, and late eveninig off peak period, so the storage boiler does not have to store it's heat for so long. [/QUOTE]
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E7 with 2 meters (on/off peak), but current only goes through one?
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