Wire Power Supply to AC Supply 6

Wire a Power Supply to an IEC Power Chassis

These instructions follow on from instruction set – Wire Power Supply to AC Supply, if you haven’t already read them it’s recommended that you do so first before proceeding.

Check that you can see all pronged plugs of your router, electronics and other devices, ensure they are not plugged in.

Best practice – hold the plugs of your devises in your hand and visually trace the cords back to the individual devices. This will confirm they are not plugged in.

What wiring colour code is used in your country?
Supply voltages vary from country to country and so do the wiring colours. You’ll need to find out what colours are used for single phase power cables. You’re interested in finding the colours for:

  1. Live,
  2. Neutral, and
  3. Earth

The following chart  will give you some examples but doesn’t necessarily correspond to your countries colours.

Image courtesy of RS-Online


Installing/Checking the Fuse

A Quick Overview
The following diagram will give you a quick overview of the IEC Chassis’ terminals and components. 

  1. AC Live pin
  2. AC Earth pin
  3. AC Neutral pin
  4. Mounting flange
  5. Removable fuse holder
  6. Removable AC switch
  7. Switch Live input pin
  8. Switch Live output pin
  9. Switch Neutral input pin (for switch LED)
  10. IEC Chassis housing
  11. Installation locking tabs (x4, 2 each side)

The IEC Chassis’ Components in a little more detail?
The chassis itself actually has 4 major parts:

  1. The chassis housing,
  2. A fuse holder, and
  3. A fuse, and
  4. An AC switch.

Your chassis may have been supplied without the fuse or switch and you may have to source them from elsewhere.







Fuse not installed or want to check if it is?

With a small flat head screw driver find the detent on top of the fuse holder and leaver it out buy pushing against the top of the mounting flange.

The fuse clips in at the back of the holder and is pushed up from underneath into position. If your chassis didn’t come with a fuse you’ll need to source one as the chassis won’t work with out it. You’ll need a 5mm in diameter and 20mm long fuse appropriate for your AC voltage and currant draw. 

You can also store a spare fuse in the front part of the holders body.

Once you have a fuse in, push the holder back in to the housing. There will be a little resistance as the fuse pushes in to it’s clips.

You will probably have noticed the fuse holder has a small upward facing lip, this is a safety feature that will not allow the fuse holder to be removed while a plug is inserted.