Build simple clamp-on amp meter for 220 VAC

J

jack0987

Member

• Jan 24, 2018

• #1

Build simple clamp-on amp meter for 220 VAC

Want to see output of my solar panels.
Right now I have four at 250 Watts each. May want to add 12 more panels in future.
What might be the easiest way to do this?

I could perhaps use my multimeter or perhaps get a needle type amp meter.

 

MaxHeadRoom78

Well-Known Member

Most Helpful Member

• Jan 24, 2018

• #2

For a clamp on meter the voltage is irrelevant within reason, current is the main issue, there are non invasive IC's etc that can be used to integrate it such as ACS712 for a couple of $$ on ebay.
OR just buy the add on attachment for you VOM (meter).
Max.

 

C

Colin

Active Member

• Jan 25, 2018

• #3

Buy a clamp meter for $11 on eBay

 

tcmtech

Banned

Most Helpful Member

• Jan 26, 2018

• #4

Are you wanting to read the AC lines after some sort of Grid Tie Inverter or the current coming off the panels themselves?

If it's the panels themselves that's DC current not AC so a normal inductive type camp on meter wont do anything with it.

 

C

Colin

Active Member

• Jan 26, 2018

• #5

If it's the panels themselves that's DC current not AC so a normal inductive type camp on meter wont do anything with it.

OH?????

• DC Voltage, AC Current, AC Voltage, DC Current
• Type
  Multimeter
• Display
  Digital

lowest price
$13.50

 

tcmtech

Banned

Most Helpful Member

• Jan 26, 2018

• #6

Colin said:

OH?????

Click to expand...

Yes. That a hall effect sensor based amp clamp. Not a induction (AKA current transformer) based.

 

MaxHeadRoom78

Well-Known Member

Most Helpful Member

• Jan 26, 2018

• #7

You don't see too many of the old moving coil AC clamp on meter much any more!
Max.

 

S

schmitt trigger

Well-Known Member

Most Helpful Member

• Jan 30, 2018

• #8

Indeed! Hall cells have become cheaper and largely superseded transformer-type current meters.