Finally got me a clamp meter

[Flipx99 5,000+ posts]

I finally got me a clamp meter from Lowe's. I am now interested in testing some electrical stuff.

How do you test amperage coming off the alternator?

How do you test watts going to the subs?

How do you test the total impedance of your subs? They are dual 4-ohm wired down to 1 ohm, but I want to see if it is really 1 ohm.

Since I bought this meter I want to test everything to make sure I am to not ruining or hurting anything. Any other items I should test since I got a clamp meter?

Click to read more...

 

[bjfish11 5,000+ posts]

i just got a clamp meter about 2 weeks ago for when the new project begins. So im subscribed, so i can see what this thing can all do. BTW what clamp meter did you get? i got the craftsman one that retails for 100 off ebay for 51 shipped brand new.

 

[Flipx99 5,000+ posts]

I got the greenlee ct-60 ( i belive that is the model) It retails for $79 and I get 10% employee discount.

 

[DBfan187 5,000+ posts]

is it a True RMS clamp?

 

[bjfish11 5,000+ posts]

yea that craftsman one i got is.

 

[skmfkr 5,000+ posts]

DMM measures resistance on your coils

 

[Flipx99 5,000+ posts]

is it a True RMS clamp?

No, the TRue RMS at Lowe's is not a clamp.

 

[bjfish11 5,000+ posts]

is this what you got? http://www.lowes.com/lowes/lkn?action=productDetail&productId=158129-72068-CM-600

im not sure, but i dont think you can really do too much more than a regular dmm with that one....someone correct me if im wrong.

 

[Flipx99 5,000+ posts]

Model # is CMT-60

 

[Flipx99 5,000+ posts]

Here is a link:

http://www.mygreenlee.com/products/det.cfm?id=3005&upc=07647

 

[johnson 10+ year member]

How do you test the total impedance of your subs? They are dual 4-ohm wired down to 1 ohm, but I want to see if it is really 1 ohm.

Set your meter to measure resistence and put the leads to the terminals. Ω

 

[Flipx99 5,000+ posts]

For total can I put the needle to the + and the - of the speaker wire? This would be more accurate wouldn't it because it would include the resistance of the wire as well.

 

[skmfkr 5,000+ posts]

yes, so that does all the asmething a DMM does plus amperage?

 

[johnson 10+ year member]

For total can I put the needle to the + and the - of the speaker wire? This would be more accurate wouldn't it because it would include the resistance of the wire as well.

You could but either way, speaker wires wont raise or lower impedence by a whole ohm.

 

[saywhat? 5,000+ posts]

http://cgi.ebay.com/Craftsman-True-RMS-Clamp-Meter_W0QQitemZ7573092351QQcategoryZ25412QQssPageNameZWDVWQQrdZ1QQcmdZViewItem this will tell u exactl how much power ur amp is sending out to ur subs?