Published: 11 April 2014
Category: Q&A
Pete asks this question, which concerns a 70W high pressure sodium floodlight, and whether a conventional light switch might be able to handle the current. It has been answered by Philips Lighting (Theme – Lighting):
This Q & A is one of thousands posted in our Technical Expertise area, and answered on a daily basis by our Voltimum Experts.
Question: I normally work on domestic wiring, so don't come across this issue much, but when I need to install a high pressure sodium floodlight (70W), can I use a normal light switch to control it?
I notice that timer switches have to be de-rated, so I’m wondering - does something similar apply to normal light switches?
Answer: When it comes to high intensity discharge lamps, there can be quite large in rush currents when switching.
You would have to identify what gear you would be using with the lamp concerned and find out what kind of currents you will be working with.
Then you should ensure that the switch you want to use can handle it.
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