# What are the most common mistakes made by electrical contractors when they install Lightcloud?

* Not keeping track of devices and locations (they should use the Device Table).
* Placing Gateway in location with a poor cell signal and having to move it. See [Where should the Gateway be located in the building?](https://lightcloud.gitbook.io/lightcloud/frequently-asked-questions/where-should-the-gateway-be-located-in-the-building) for proper location guidance.
* Miswiring a Controller or Sensor, such as tieing neutrals together instead of installing one neutral per circuit for load monitoring by Lightcloud. See [Can the power to a Controller use a shared neutral?](https://lightcloud.gitbook.io/lightcloud/frequently-asked-questions/can-the-power-to-a-controller-use-a-shared-neutral) and [What if you don’t have a dedicated neutral to the load? What do I do to monitor load?](https://lightcloud.gitbook.io/lightcloud/frequently-asked-questions/what-if-you-dont-have-a-dedicated-neutral-to-the-load-what-do-i-do-to-monitor-load)
* Not following wiring instructions. Ensure that the correct color wires are connected together. See [What are the 6 wires coming out of the Controller and the Sensor?](https://lightcloud.gitbook.io/lightcloud/frequently-asked-questions/what-are-the-6-wires-coming-out-of-the-controller-and-the-sensor)
* Illegible Device Table due to poor handwriting, such as 9s looking like 7s and 1s looking like 7s. Use the Device ID Stickers provided by RAB wherever possible.
