Wall mount for the Marstek CT003

The CT003 comes with a small magnet. Handy, as long as there is something made of steel nearby. In many meter cupboards there is not: the cupboard is plastic, the wall is brick or plaster, and the meter ends up hanging from its own P1 cable. That pulls on the connector, and at the slightest knock it is on the floor.

You screw this holder in place exactly where you want it. The CT003 slides in from the top and sits snugly in the housing; the bottom is closed, so it cannot drop out. The opening at the front keeps the status light visible, and the cable leaves neatly underneath.

The two mounting tabs are deliberately on the outside of the housing, so you can tighten the screws while the meter is still out. Then you click it in and you are done.

Why the pull on the cable matters

The CT003 takes its power from the P1 port of your smart meter. So there is no second cable to take the weight: everything hangs from that one connector. If a meter is pulling on it all the time, that is exactly where the connection eventually starts to fail — and a P1 meter that drops out now and then leaves gaps in your energy data.

Hold the holder where you want it, mark the two holes, pre-drill and screw it in place. Then slide the CT003 into the housing from the top and route the cable away underneath.

Printed in PLA. It holds its dimensions and gives a clean surface, and a meter cupboard does not normally get anywhere near the temperature at which PLA softens. If your holder will sit right next to something that gets warm, such as an inverter, let us know before you order.